Stange things with my IMPALA

[ysteve]

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!!!

[billyo69]

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.

[billyo69]

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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.

[ysteve]

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.

[bigrod118]

Originally Posted by ysteve

(put syntetic Mobil ! 10W50)

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

[ysteve]

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!!!!!!!!!!!!!!!

[bigrod118]

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?

[ysteve]

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!!!!

[bigrod118]

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.

[billyo69]

Dont let anyone rebuild the tranny until the car wont move

[ysteve]

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.

[bigrod118]

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.

[ysteve]

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.

[ysteve]

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.

[micali]

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.