Stange things with my IMPALA

I have a noise from the engine. Why it could be. Is it because syntetic oil, or filter get cloged(OIL) (noise looks like valves),that all what i did for engine, just change oil (put syntetic Mobil ! 10W50). I have little bit of vibration on the steerin wheel, when i am on the taffic light, it looks like sometime misfire(like in 2seconds 1time). I dont know what else it could be? Maybe my spark plugs from syntetic oil get bad, or injector cet carbond, or something else. But i dont have any FU$#%$#ING SES LIGHT.
PLEASE HELP!!!
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Well people say oil type shpild have nothing to do with the way a motor runs.BUT once i used mobile 1 synthetic oil in a car and it ran like crap.I drained it the next day and never used synthetic oil again. Many people use it and love it.

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Well people say oil type SHOULD have nothing to do with the way a motor runs.BUT once i used mobile 1 synthetic oil in a car and it ran like crap.I drained it the next day and never used synthetic oil again. Many people use it and love it.

Yeah you right 99% saying syntetic is best, but i dont have any explanation for that. Because sins i bought it i change only oil, air filter, spark plugs, wires, PCV valve,fuel filter, cat, and tranny oil and filter. CAR have 85ooo miles 2003, 3.4eng. I am gonna be apresiate if you can ask sombody around. REminder, when istop on the trafic light i have little vibration on the steering wheel, looks like misfire but cant find anything.

(put syntetic Mobil ! 10W50)

Unless this is a typo, this is most likely what is causing your concern. NOT 10W50, USE 10W30

You kidding me. But the cap says 10W50. So you think its oil, is it damaged something inside, cause i drive maybe 2 month, 30minute every day. Do i have to change something else (oil pump,or engine parts) or just oil and filter? And another thing i wanna put regular oil, not syntetic. If leftover inside of engine gonna mix with new oil , bad or nothing gonna be wrong? And last 3.4 engine takes 4 1/2 quarts, right?
Thank you very much i am gonna try in next couple of days and respond you to see what happent!!!!!!!!!!!!!!!

I would double check that the cap says 10W50, cuz that is VERY wrong, someone must have gotten a new cap, possibly from a different car.

THE IMPALA TAKES 10W30 OR 5W30(in the winter)

And yes, 4.5 quarts WITH filter change, or 4.0 WITHOUT filter change. But change the filter.

and no, using standard oil wont hurt your engine, how long ahve you been using synthetic? How many miles are on the car?

Ok.Here is my story. I bought this car in october. Owner before me use to lease this car. When i bought it has81000 miles. On syntetic oil i drive sinse january. I change oil and filter today and still the same thing.

I have another question. January i had little bit hard upshift (something like kickback,most on 1-2, 2-3) I went to the tranny shop, they sayd this is not pressure control solenoid (no codes). Then i went to the AAMCO trany shop and pay 120$ diagnostic fee. They never find the codes. But they pull the pan down and sayd tranny needs to rebuild. Cause onthe pan little sqaure magnet and on the magnet little of the metal dust.I told him close the pan, i am not gonna rebuild. Then i tallk a lot on the forums. And gus saying they just tryying to rip me off. What you think if i am the first who open the tranny in 81000 miles , the metal dust is acceptable or not. I still have the same kickback upshift . What it can mean tranny need to rebuild soon, or its normal for 84ooo miles, or maybe it something else (for example i heard cause of misfire can be that thing).
THANKYOU VERY MUCH!!!!

Might just need a fluid CHANGE, NOT A FLUSH!!! with 84,000 miles on the car, I suggest taht you NOT do a tranny fluid flush, only a fluid change (drop the pan, change filter, and refill. again, DO NOT FLUSH!!!

so you changed the oil today and used 10W30 and you still have the same noise?? If so, try to describe the noise a little better. Is it a pinging, knocking, grinding, hissing...etc.

The engine makes plenty of noises and each one can be taken in a different way. I am no expert, but I will try to help all that I can.

Dont let anyone rebuild the tranny until the car wont move

About the tranny i changed oil and filter 2 month ago. What you think how long i can drive on this trany with normal condition?
Noise more looks like valves knocking, i dont know wich ones intake or exhaust. Cause you dont hear im on park. Hear only when accelerate.

did you do the tranny fluid and filter change yourself? or did you go to a shop or "quik lube" place?

From what I can gather from your engine noises, it does sound oil related, perhaps you just need to run it a few more days, with the proper viscosity of oil in it, to "re-lube" everything properly. If I remember correctly, 50 weight is going to be a thicker oil, so what MAY have happened is...

With using a thicker than recommeneded oil, you could have plugged up the oil pump and it may not be getting the proper oil levels to the top of the motor, and that is where you will get a knocking or sound from the valves.

OR

with such a thick oil, you could have even damaged your oil pump, and it just cant handle pumping oil to the top of the motor anymore, and it may need to be replaced, hopefully not.

I would say try to drive the car nicely for a week or so, and see if the problem decreases a bit, or just all together goes away, it may just need to get all the thicker oil "out of its system" and even tho it may seem like overkill, you may want to consider another oil chagne in a week or 2. Let the motor try to work out the thick oil and then change it again to get rid of the oil, and make sure you chagne the filter again too. but again, that might just be overkill or perhaps a waste of money.....someone else help me out here.

Otherwise, you might just need to break down and take the car to a shop or the dealership, and let them DIAGNOIS the problem, DO NOT LET THEM FIX IT!!! Just make an appointment and have it checked out and see what they say.

Other than those ideas, I think I might be fresh out.

Oil and filter change the shop, and they sayd everithing ok with your tranny.

I am gonna tell you interesting thing: Maybe somebody from you know this site (JUST ANSWER.COM) Owethere experts sitting on the PCs and answering technical question, but for the money. I ask him a lot of questions. And they sayig hard tranny upshift can be from misfire too. I post you before thats i have vibration onthe steering wheel . But cant figure out why. What you think i should try to first illuminate that problem, then think that something wrong inside the tranny. Why else can be misfire i chage alredy bunch of things: fuel filter, air filter, AC delco sparks and wires, PCV valve, cat.

Guys another thing if somone need to clean the injectors: go to CHEVYPARTS.COM and # 12346291 Buy 12oz tube and put on 12gallon super, after tank is finish your cars gonna FLY.

Please helpme with misfire, cause i think all this things(tranny work, no power, noise from the engine) because of misfire.

Oil and filter change the shop, and they sayd everithing ok with your tranny.

I am gonna tell you interesting thing: Maybe somebody from you know this site (JUST ANSWER.COM) Owethere experts sitting on the PCs and answering technical question, but for the money. I ask him a lot of questions. And they sayig hard tranny upshift can be from misfire too. I post you before thats i have vibration onthe steering wheel . But cant figure out why. What you think i should try to first illuminate that problem, then think that something wrong inside the tranny. Why else can be misfire i chage alredy bunch of things: fuel filter, air filter, AC delco sparks and wires, PCV valve, cat.

Guys another thing if somone need to clean the injectors: go to CHEVYPARTS.COM and # 12346291 Buy 12oz tube and put on 12gallon super, after tank is finish your cars gonna FLY.

Please helpme with misfire, cause i think all this things(tranny work, no power, noise from the engine) because of misfire.

When I put 20 50w in my car it started making an engine noise, the dealer said take that out right away and only put 10w30 or 40 in it. He said that it can damage the motor. These motors are built so tight that having such thick oil can cause to much pressure inside the engine. I only drove mine for an a day like that.

I've done engine flushes that you can buy at wal-mart and they can help remove the old oil. You need to make sure that it would be safe to use first.

Isn't there this device you can hook up to your car and drive it for awhile to see how the motor is performing. Once you are done you can upload it to your computer and it will show you were you are having a misfire and other problems. It's a one time use deal but I can't remember where I saw it. I'll try and look for it agian. If anyone has heard of this let him know about it.

The dealer should be able to hook thier computer up and tell you something. They did it for me. Told me things that I didn't have a light for.

Did you know about this?



The use of an excessively/over-oiled aftermarket, reusable air filter may result in:
^

Transmission shift concerns, slipping and damaged clutch(es) or band(s) ^ Engine driveability concerns, poor acceleration from a stop, limited engine RPM range The oil that is used on these air filter elements (http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOD%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/34872087) may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.
When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively/over-oiled air filter. The MAF, GPS reading should be compared to a like vehicle with an OEM air box and filter under the same driving conditions to verify the concern.
The use of an aftermarket reusable air filter DOES NOT void the vehicle's warranty.
If an aftermarket reusable air filter is used, technicians should inspect the MAF sensor element and the air induction hose for contamination of oil prior to making warranty repairs.
Transmission or engine driveability concerns (related to the MAF sensor being contaminated with oil) that are the result of the use of an aftermarket reusable, excessively/over-oiled air filter are not considered to be warrantable repair items.

OK,:smokin: do you know about this?



Some owners may comment on driveability symptoms of long or hard starts, chuggle, rough idle and light or intermittent misfire. The malfunction indicator lamp (MIL) may also illuminate.




Cause
Due to various factors, the fuel injectors may become restricted. Extensive testing has demonstrated that fuel related issues are the cause of clogged injectors. At this point, no specific fuel, fuel constituent, or engine condition has been identified as causing the restriction. The restriction causes the engine to operate at a lean air fuel ratio. This may either trigger the MIL to illuminate or the engine to develop various driveability symptoms.
Correction
Fuel injector restrictions, deposits, can be cleaned on the vehicle using the following procedure. Under NO circumstances should this procedure be modified, changed or shortened.
Note: The recommended mixture amount of GM Top-Engine Cleaner has been increased from 5% used in prior procedures to 10%. This increase was implemented to improve the effectiveness of the injector cleaning procedure. Follow the cleaning procedure carefully to minimize the risk of fuel system damage. Testing has demonstrated that exceeding the 10% cleaning solution concentration does not improve the effectiveness of this procedure. GM Top-Engine Cleaner is the only injector cleaning agent approved for use with General Motors fuel system components. Other injector cleaners may cause damage to plastics, plated metals or bearings. General Motors has completed extensive laboratory testing of GM Top-Engine Cleaner, and can assure its compatibility with General Motors fuel system components, as long as the cleaning procedure is followed correctly. Important: This bulletin recommends the use of pre-measured containers of GM Top-Engine Cleaner, P/N 12346535, - U.S. USAGE ONLY. Pre-measured containers eliminate the need to measure the amount of GM Top-Engine Cleaner being added to the J 35800-A, injector cleaning tool. In Canada, use P/N 992872. It will be necessary to measure and dispense Top Engine Cleaner into the J 35800-A, injector cleaning tool. Injector Balance Test
The following tools, or their equivalent, are required:
^ J 35800-A Fuel Injector Cleaner ^ J 37287 Fuel Line Shut-off Adapter ^ J 42964 Fuel Line Shut-off Adapter ^ J 42873 Fuel Line Shut-off Adapter ^ Four pre-measured GM Top-Engine Cleaner Containers, 24 ml (0.812 oz) each, P/N 12346535, U.S. USAGE ONLY. In Canada, use P/N 992872, 443.6 ml (15 oz) bottle. It will be necessary to measure and dispense 48 ml (1.6 oz) of Top Engine-Cleaner into the J 35800-A, injector cleaning tool twice during this procedure. See Injector Cleaning Procedure below for further information. Important: Analysis of returned Multec II injectors indicate that terminal fretting corrosion may also be responsible for the conditions described in this bulletin. Since fretting corrosion (microscopic in nature) is nearly impossible to detect in the field, the following steps should be taken to ensure that fretting corrosion is not an issue before performing any additional diagnostics. Fretting is a term used to describe a tiny rubbing motion that occurs between two surfaces. Fretting corrosion refers to a build up of insulating, oxidized debris that forms on electrical connections due to a fretting action at the contact points. Injector vibration, engine vibration, and electrical harness movement are contributors to the fretting motion.
Depending on how large the build-up of oxide is will determine how drastic the effect will be on the injector circuit. Worst case is a total loss of continuity in the connection resulting in P0200 (Injector Circuit Fault) and P0300 (Misfire) codes being set. If the oxides create a high resistance circuit, insufficient current will be available to properly open the injector, resulting in unstable fuel delivery and ultimately a P0300 DTC. High resistance in the circuit will not necessarily set a DTC P0200. Keep in mind that a connection with fretting corrosion is unstable. Since movement causes fretting, any vibration may create a condition where the connection varies from an open circuit, to a high resistance connection, to a good connection.
Important: Unless intermittent mis-fire due to fretting corrosion is suspected when servicing 3.1 L and 3.4L engines, skip steps 1 through 4. Steps 1 through 4 may be performed at a future date when the upper intake is removed. When servicing 2.8L, 3.5L or 4.2L engines (VINs 8, 6, S - RPOs LK5, L52, LL8) skip steps 1 through 4 unless replacing injectors.
1. Disconnect one injector electrical connector. 2. Apply a small amount, about the size of a BB, of dielectric grease, P/N 12377900 (in Canada, P/N 10953529) to the female terminal. Be sure to cover both cavities. 3. Reconnect electrical connector to injector. 4. Repeat steps 1 through 3 for all remaining injectors. 5. Using the Tech 2(R), perform an injector balance test using the procedure in the appropriate Service Manual. Use the Tech 2(R) to select each individual injector. Record the pressure drop of each injector on the repair order. http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOB0%7EP4R0H%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/34856143/42063449/56955374/108162429/108593052/108593054
http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOB0%7EP4R0H%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/34856143/42063449/56955374/108162429/108593052/108593055 Important: Technicians must record the results of all injector balance tests and keep them with the repair order. For your convenience, the bulletin has a worksheet shown for recording the test results. http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOB0%7EP3R0H%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/34856143/42063449/56955374/108162429/108593052/108593056
http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOB0%7EP3R0H%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/34856143/42063449/56955374/108162429/108593052/108593057 6. Subtract the lowest pressure drop, leanest injector, from the highest pressure drop, richest injector. If there is greater than or equal to a 20 kPa difference between the lowest and highest pressure drop, then the fuel injectors may be the cause of the driveability symptom. See the example tables shown to determine if cleaning is appropriate. 7. If there is less than a 20 kPa difference, between the highest and lowest fuel pressure (http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOD%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/58828685) drop, the fuel injectors are operating properly and further Service Manual diagnostics should be performed on the vehicle. All diagnostic time should be added to the appropriate labor operation for the repair performed and not to injector cleaning. Although the pressure drop is greater than or equal to 20 kPa, cylinder 2 stands out as being rich when compared to the other injectors. Do not clean the injectors. Replace injector number 2. Charge time to labor operation J5650.
Important: When replacing injectors be sure to add dielectric grease to injector electrical connectors. The pressure drop is greater than or equal to 20 kPa. Injectors 1 and 3 appear to be lean when compared to injectors 2, 4, 5 and 6. Clean and re-test pressure drop. If cleaning does not restore flow on injectors 1 or 3, replace the detective injector or injectors as necessary. Charge time to labor operation J5650.
Injector Cleaning Procedure
Note: GM Top-Engine Cleaner is the only injector cleaning agent recommended. DO NOT USE OTHER CLEANING AGENTS, AS THEY MAY CONTAIN METHANOL WHICH CAN DAMAGE FUEL SYSTEM COMPONENTS. Under NO circumstances should the GM Top-Engine Cleaner be added to the vehicle fuel tank, as it may damage the fuel pump and other system components. Do not exceed a 10% cleaning solution concentration. Higher concentrations may damage fuel system components. Testing has demonstrated that exceeding the 10% cleaning solution concentration does not improve the effectiveness of this procedure.
During this procedure, you will need a total of 960 ml (32.4 oz) of cleaning solution (10% Top Engine Cleaner/90% Regular Unleaded Gasoline). That is two tanks of solution for the J 35800-A Fuel Injector Cleaner Tank. Other brands of tools may have a different capacity and would, therefore, require more or less tanks to complete the procedure. You must use all 960 ml (32.4 oz) of solution (10% Top Engine Cleaner/90% Regular Unleaded Gasoline) to insure complete injector cleaning.
Important: Vehicles with less than 100 miles (160 km) on the odometer should not have the injectors cleaned. These vehicles should have any out of specification injectors replaced. 1. For U.S. dealers, empty 2 pre-measured GM Top-Engine Cleaner containers, 24 ml (0.812 oz) each, P/N 12346535, into the J 35800-A, injector cleaning tank. For Canadian Dealers, measure and dispense 48 ml (1.62 oz) of Top-Engine Cleaner, P/N 992872, into the J 35800-A, injector cleaning tank. If you are using any other brand of tank, you will need a total of 96 ml (3.24 oz) of Top-Engine Cleaner mixed with 864 ml (29.16 oz) of regular unleaded gasoline. 2. Fill the injector cleaning tank with regular unleaded gasoline. Be sure to follow all additional instructions provided with the tool. 3. Electrically disable the vehicle fuel pump by removing the fuel pump relay and disconnecting the oil pressure switch connector, if equipped. 4. Turn the ignition to the Off position. 5. Relieve fuel pressure (http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOD%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/58828685) and disconnect the fuel feed and return lines at the fuel rail. Plug the fuel feed and return lines coming off the fuel rail with J 37287, J 42873 or J 42964 as appropriate for the fuel system. 6. Connect the J 35800-A to the vehicle fuel rail. 7. Pressurize the J 35800-A to 510 kPa (75 psi). 8. Start and idle the engine until it stalls, due to lack of fuel. This should take approximately 15-20 minutes. 9. Turn the ignition to the Off position. 10. Refill the J 35800-A injector cleaning tank per steps 1 and 2. 11. Start and idle the engine until it stalls, due to lack of fuel. This should take approximately 15-20 minutes. 12. Turn the ignition to the Off position. 13. Disconnect J 35800-A from the fuel rail. 14. Reconnect the vehicle fuel pump relay and oil pressure switch connector, if equipped. 15. Remove the J 37287, J 42873 or J 42964 and reconnect the vehicle fuel feed and return lines. 16. Start and idle the vehicle for an additional 2 minutes to ensure residual injector cleaner is flushed from the fuel rail and fuel lines. 17. Repeat Step 5 of the Injector Balance Test and record the fuel pressure (http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOD%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/58828685) drop from each injector. 18. Subtract the lowest fuel pressure (http://www.alldatadiy.com/alldata/AFI%7EV6414719%7EC37398%7ER0%7EOD%7EN/0/89012112/94694975/94694986/94694990/34853741/100411974/34853743/58828685) drop from the highest fuel pressure drop. If the value is less than 15 kPa, no additional action is required. If the value is greater than or equal to 15 kPa, replace the injector assembly with the lowest fuel pressure drop. Follow injector replacement procedures outlined in the appropriate Service Manual Information for the vehicle. Repeat balance test to ensure that all injectors fall within 15 kPa. 19. Add one ounce (30 ml) of Fuel System Treatment, P/N 12345104 (Canada P/N 89020804), to the vehicle fuel tank for each gallon (3.78 L) of gasoline estimated to be in the fuel tank. Instruct the customer to add the remainder of the bottle of Fuel System Treatment to the vehicle fuel tank at the next fill-up. 20. Advise customer to change brands of fuel and to add GM Fuel System Treatment at every oil change. Regular use of GM Fuel System Treatment should keep the customer from having to repeat the injector cleaning procedure. 21. Road test the vehicle to verify that the customer concern has been corrected.

And do you know about this too?



Guys some of you may comment that the Service Engine Soon (SES) indicator is illuminated and that while the light is illuminated, transmission shifts are extremely harsh.
Cause
These types of conditions may be caused by an intermittent connection at the transaxle 20-way connector to the wiring harness interface.
Correction
If a DTC was recorded and the Freeze Frame and Failure Records back it up, a problem existed at one time with the wiring and/or the connectors between the transaxle and the PCM. Therefore, a thorough inspection and/or repair of the wiring harness at the transaxle 20-way connector for one or more of the following conditions may be warranted.
The wiring harness is stretched too tightly or other components are pressing on the connector body itself causing a downward pressure on the connector body and possible intermittent contact of the wiring terminals. Ensure proper clearance to any other components and wiring (i.e. hoses, battery cables, etc.).
^ The terminals are not fully seated into the cavity of the connector body. ^ The male terminals in the transaxle portion of the connector may be in the wrong position (i.e. bent). ^ The female terminals may be loose and are not making proper contact. Check the tension with the proper terminal tester from the GM Terminal Test Kit J 35616-A or J 35616-92. If the tension is low, replace the terminal. Do not try to re-form the terminal. ^ The crimp of the terminal to the wire may not be satisfactory (i.e. loose, over insulation, etc.). ^ The wiring connector is not properly seated and locked in position. Ensure proper seating of the connector into the transaxle and that the connector is properly locked in place.

I can give you another 1000000 explanation. Why all of you guys saying not the same thing. Why 3 0r 5 0r 8 people cant say to me same. I am tired of this piece of&^%$^&%$&^ GM car. Or maybe iam not lucky with that.
I dont know but please help me. I am still paying for the car. And i dont wanna have this piece of %$*%$ problems.:banghead:

first, stop repeating yourself that won't get an answer any faster. This prob may be to big or to vague for this forum. I would suggest finding a new dealer, ask them to test the computer, make sure they won't charge you if they don't find anything and let them have a go.