Car start up rough idle and dies

streetenvy · Mar 26, 2011

Ive been having some problems with my 95 gst. At first the car would Idle any where from 1500- 1700 rpm, days later it started sputtering really bad in all of this no CEL changed plugs, now the car barley want to stay runing check fireing order and its right, when i try and start with maf unpluged it runs a tiny bit better so is it a bad maf or some other sensor HELP i miss a week of work already

boostinout · Mar 26, 2011

If you can crank it up and rev it to about 5 or 6000 rpms and it sounds good then its the maf.

TurboTsiThatFly · Mar 26, 2011

so does it crank? then run like its misfireing? and then the car cuts off? is then when on a cold start? more info please..

streetenvy · Mar 26, 2011

TurboTsiThatFly said:
so does it crank? then run like its misfireing? and then the car cuts off? is then when on a cold start? more info please..

when i got the car a few weeks ago it ran fine, a week later it had the high idle issue, day later it start with the misfire, change plug and wires, now when i start it it runs for a few seconds and dies when started up with maf unpluged it runs like shit but wont die

TurboTsiThatFly · Mar 26, 2011

do you have a cel for the maf sensor? and sounds like it could be a coil pack issue. have you done a boost leak test? what were the results? mine had a cold start issue that made it misfire. but mine was as simple as the exhaust manifold had a crack in it. have you done a full tune up plugs wires etc?

Bomalleygst · Mar 27, 2011

Im havin a similar problem with my car.i havent tried running it without the maf plugged in. Im gonna go check and see if it works. Does your car feel like the fuel cuts out?

streetenvy · Mar 27, 2011

TurboTsiThatFly said:
do you have a cel for the maf sensor? and sounds like it could be a coil pack issue. have you done a boost leak test? what were the results? mine had a cold start issue that made it misfire. but mine was as simple as the exhaust manifold had a crack in it. have you done a full tune up plugs wires etc?

No CEL only when the maf is unpluged, yes plugs and wires where just replaced this whole issuse made my change them hoping it would help and as far as boost leak test i spray soapy water on all vaccum line i could find found nothing. The car had a coolant bypass done by last owner and i preform the undo thinking that would help as far as exhaust manifold is wraped so i cant if there is a crack but it does smell like fuel near it and my wrap smoke somethime dont know what that is about i will have to try coil pack next thank

Bomalleygst said:
Im havin a similar problem with my car.i havent tried running it without the maf plugged in. Im gonna go check and see if it works. Does your car feel like the fuel cuts out?

Yea it does start's up for about 5 sec and die's, fuel pump even sounds like it die's to until i try and start it again

Ok so wires and plugs and maf all changed still runs the same leaning toward coil or o2 maybe it does a have a crack in my exhaust it has the wraps on it and i notice after a shorly while of runing i notice it smoking so unwraping when car cools man this gets hot really quick thanx u guys for all the help so far please keep it coming

dsmalaska · Jan 28, 2014

streetenvy said:
No CEL only when the maf is unpluged, yes plugs and wires where just replaced this whole issuse made my change them hoping it would help and as far as boost leak test i spray soapy water on all vaccum line i could find found nothing. The car had a coolant bypass done by last owner and i preform the undo thinking that would help as far as exhaust manifold is wraped so i cant if there is a crack but it does smell like fuel near it and my wrap smoke somethime dont know what that is about i will have to try coil pack next thank

Yea it does start's up for about 5 sec and die's, fuel pump even sounds like it die's to until i try and start it again

Ok so wires and plugs and maf all changed still runs the same leaning toward coil or o2 maybe it does a have a crack in my exhaust it has the wraps on it and i notice after a shorly while of runing i notice it smoking so unwraping when car cools man this gets hot really quick thanx u guys for all the help so far please keep it coming

I'm having the exact same problem, did you ever figure it out? I changed my O2. Sensor and I changed plugs but seems like it made it worse. Runs fine at higher idle but won't idle unless given gas and if it does idle it has surging

1995 brian · Jan 29, 2014

Check your timing marks. You might of jumped timing.

dsmalaska · Jan 29, 2014

1995 brian said:
Check your timing marks. You might of jumped timing.

Timing marks on the cam gears? And like I said it happened out of no where. Previous owner said timing belt, tensioner and all needed parts where done in 2010. So don't know if I need to do another timing belt job or not.

1995 brian · Jan 29, 2014

It wont hurt to double check. Hydraulic tensioner can go bad in 4 years.

Benjyc32 · Jan 29, 2014

Do you have a FPR? check the fuel Pressure and see if you have anough to keep your engine running. i had a similar problem and found that my FP was too low.

dsmalaska · Jan 29, 2014

Benjyc32 said:
Do you have a FPR? check the fuel Pressure and see if you have anough to keep your engine running. i had a similar problem and found that my FP was too low.

No I don't. I'm going to use my friends data logger you could call it and see what the pressure is, if possible with his program.

Benjyc32 · Jan 30, 2014

dsmalaska said:
No I don't. I'm going to use my friends data logger you could call it and see what the pressure is, if possible with his program.

Like an OBD 2 port scanner?

Boostnvegas · Feb 7, 2014

Did you get anywhere with this issue?? My 98 is doing thr same kinda thing.

Meinleat · Feb 7, 2014

Does it sound like this?
[ame=http://youtu.be/LyCTduxqZX0]Eclipse gsx wont start - YouTube[/ame]
Mine had skipped timing and bent a couple valves.

jukebois · Feb 7, 2014

when checking for vacume leaks you have to use carburetor clean or propane. when the car starts quickly spray around the back of the mass air flow meter to the end of the intake manifold also between the head and the intake manifold. the idle will either rise or subside depend on the category of the leak.

NC_Dirt_Racer · Feb 7, 2014

All you have to do is a boost leak test and it will show any vacuum leaks. Also the maf doesn't always throw a CEL. Checking timing isnt a bad idea before you go cranking on the car anymore. I would check the computer for any stored codes as well

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