Starts but dies

95firebird · #1 10-27-2006, 07:49 PM

Ok so I just got my car from the shop they put in a new lower intake mainfold. The car ran so good home. When to pull in my drive way and the car idle really hard (like it was out of gas) and died. went to start it back up it start but runs like crap and dies when it cuts off it makes this noise like when and bus or big truck stops its a pushhh sound. I called the shop back and they said its nothing they did the car ran fine on the test drive so i dont no what to do now

thanks for all the help ahead of time

blindeyed · #2 10-27-2006, 11:09 PM

Quote:

Originally Posted by 95firebird

Ok so I just got my car from the shop they put in a new lower intake mainfold. The car ran so good home. When to pull in my drive way and the car idle really hard (like it was out of gas) and died. went to start it back up it start but runs like crap and dies when it cuts off it makes this noise like when and bus or big truck stops its a pushhh sound. I called the shop back and they said its nothing they did the car ran fine on the test drive so i dont no what to do now

thanks for all the help ahead of time

Have it towed back to the shop and tell them to fix that crap man. Doesn't matter if it ran fine on the test drive or not, the fact that you could only get it home before it crapped out still leaves them responsible to fix it if you ask me. Sounds like a vaccum leak though.

p.s... please post threads like these that have to do with problems in the "problem diagnosis" subforum. Thx

hotrod_chevyz · #3 10-28-2006, 03:31 PM

I agree with blindxeyed. Hopefully they didnt mess up anything important.

95firebird · #4 10-28-2006, 04:33 PM

I dont understand why i would run fine all the way home then crap out

hotrod_chevyz · #5 10-28-2006, 07:31 PM

If they messed it up, thats all you should have to understand if you payed sombody to fix it and they messed up somwhere along the assembly.

If they didnt put a seal in right or somthing and it took it that long to show its butt, or if it took the computer of the car a little while to realize somthing was wrong, could explain it.

ikeyballz · #6 10-29-2006, 02:50 AM

prolly something fell off after you drove er home...i agree with both of em.. make those guys fix what they broke ;D

95firebird · #7 11-01-2006, 07:49 PM

Update took the car back yesterday they are saying its the mass air flow sensor thats back and is going to cost about 140 bucks to replace or i can just unplug it for now and the car will run fine tell i can replace it. so two question would the sensor cause the car to act the way it did and two if i can unplug it and the car will run fine why do i need it

Thanks for eveyones help

hotrod_chevyz · #8 11-01-2006, 07:53 PM

Quote:

Originally Posted by 95firebird

Update took the car back yesterday they are saying its the mass air flow sensor thats back and is going to cost about 140 bucks to replace or i can just unplug it for now and the car will run fine tell i can replace it. so two question would the sensor cause the car to act the way it did and two if i can unplug it and the car will run fine why do i need it

Thanks for eveyones help

yes it can make them run stupid like that. If it worked okay before and never had the problem then they are still at fault IMO. You can get them way cheaper salvage (30 day gurantee), and they arent too big of deal to put in. For all i know they could have hooked the hoses up wrong, causing it to flash a code....

Morley · #9 11-02-2006, 02:18 AM

A MAF sensor can cause what you describe. If you unhook it and it starts and runs, check the wiring to the MAF for shorts and or breaks. If the wiring is good, the MAF needs to be replaced. It is not good to run it without a MAF because the ECM is running "dumb" and just using default fueling tables to allow you to "limp home". Extended running without a MAF isn't a good idea, especially if you still have your cat. converter. It can cause the cat to plug up since the car will be running rich. The default table runs on the rich side to ensure the engine is protected from detonation.

blindeyed · #10 11-02-2006, 11:46 PM

Quote:

Originally Posted by 95firebird

Update took the car back yesterday they are saying its the mass air flow sensor thats back and is going to cost about 140 bucks to replace or i can just unplug it for now and the car will run fine tell i can replace it. so two question would the sensor cause the car to act the way it did and two if i can unplug it and the car will run fine why do i need it

Thanks for eveyones help

Please tell me you have either a Formula or a T/A.. because the V6's from 1995 don't have MAF's.

wrightz28 · #11 11-03-2006, 10:05 AM

Let's not forget, MAFs cannot help the PCM determine trim if there is a intake leak past it

hotrod_chevyz · #12 11-03-2006, 02:58 PM

Thats exactly what i was thinking it was wrightz28. Although ive seen them freak out because hoses misrouted. On this one the cruise control hose was switched out for the washer fluid hose or somthing like that, towards the back of the intake manifold.

95firebird · #13 11-03-2006, 06:23 PM

Quote:

Originally Posted by blindxeyed

Please tell me you have either a Formula or a T/A.. because the V6's from 1995 don't have MAF's.

whats the sensor going into the side of the air intake thats what they are calling the mass air flow sensor

hotrod_chevyz · #14 11-03-2006, 07:34 PM

If it is a V8 as blindxeyed said ,the MAF could just be dirty from being taken off and exposed to a messy environment, such as being layed on the floor or somthing while it was up at the shop. I would remove the MAF and inspect/clean it first and see if that helps. Its easy to make one dirty, you dont even have to try.

You can be checking an air cleaner and one tiny fiber will fly down the hole and get on the MAF. This is no good. K&N air filters have an oil in them, and it gets on some MAFs and it will trip a car pretty much out. Being careless probably kills more MAF's that anything else.

Another thing, MAF are like a lightbulb in a way. Once they get old if they get shook around too much or bumped they can stop working pretty fast. Like instantly.

If you do remove it for inspection, you might as well pick up some type of electronic cleaner in a spray can to spray it off with. Make sure it says on the can you can use it on sensative electrical equipment, and that it leaves no residue. I use CRC but a lot different people make it.

EDIT: i was just thinking somthing as i was typing. On my 97' Crown Victoria, You can change out the MAF and air box with one out of a Mercury Marauder. When you do it adds HP with no other parts applied(supposedly). Might be somthing worth looking into.

question for owner. why was the lower intake replaced? problem or upgrade?

question for AF crowd: if its an upgrade could it be possible changing the lower intake could have somhow thrown off the MAF?

95firebird · #15 11-03-2006, 09:30 PM

Quote:

Originally Posted by hotrod_chevyz

If it is a V8 as blindxeyed said ,the MAF could just be dirty from being taken off and exposed to a messy environment, such as being layed on the floor or somthing while it was up at the shop. I would remove the MAF and inspect/clean it first and see if that helps. Its easy to make one dirty, you dont even have to try.

You can be checking an air cleaner and one tiny fiber will fly down the hole and get on the MAF. This is no good. K&N air filters have an oil in them, and it gets on some MAFs and it will trip a car pretty much out. Being careless probably kills more MAF's that anything else.

Another thing, MAF are like a lightbulb in a way. Once they get old if they get shook around too much or bumped they can stop working pretty fast. Like instantly.

If you do remove it for inspection, you might as well pick up some type of electronic cleaner in a spray can to spray it off with. Make sure it says on the can you can use it on sensative electrical equipment, and that it leaves no residue. I use CRC but a lot different people make it.

EDIT: i was just thinking somthing as i was typing. On my 97' Crown Victoria, You can change out the MAF and air box with one out of a Mercury Marauder. When you do it adds HP with no other parts applied(supposedly). Might be somthing worth looking into.

question for owner. why was the lower intake replaced? problem or upgrade?

question for AF crowd: if its an upgrade could it be possible changing the lower intake could have somhow thrown off the MAF?

NO is a v6 but I have a sensor on the side of the Air Intake. I took the car in cuz it had an oil leak. They look at it and said it leaking from an o ring to the oil pump drive shaft. They said it was going to be 150. They started to take things apart and called me the next day and asked me if my lower intake manifold has ever been machined. I told them no not since I have had the car. well he said whom ever had the car did and did a bad job cuz they machined it was to much and there was a step from where it was supposed to line up with the valve covers and how they fixed that was silicone it which later made it start to leak oil. So I had to have a new intake manifold put in

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