350 TPI w/MAF start but won't stay
05-12-2015, 06:11 AM
#1
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Car: GTA 89
Engine: L98
Transmission: TH700
Axle/Gears: BW 9 bolt
350 TPI w/MAF start but won't stay
Hi
350 TPI starts fine and immediately after this the rpms going down and down and dies...
if I put the gas pedal it idles great with no strange noises bogging etc, whenI reving it also everything is ok.
what should I check? IAC valve?
350 TPI starts fine and immediately after this the rpms going down and down and dies...
if I put the gas pedal it idles great with no strange noises bogging etc, whenI reving it also everything is ok.
what should I check? IAC valve?
05-12-2015, 06:57 AM
#2
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Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 350 TPI w/MAF start but won't stay
Your TPS and Min Air is out of adjustment. No big problem.
Follow this procedure to the letter. It will get you fixed up.
https://www.thirdgen.org/newdesign/tech/tpimod2.shtml
Follow this procedure to the letter. It will get you fixed up.
https://www.thirdgen.org/newdesign/tech/tpimod2.shtml
05-12-2015, 09:06 AM
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Transmission: 700R4
Axle/Gears: 2.73
Re: 350 TPI w/MAF start but won't stay
will that work for a SD car as well? my 92 TA does the same thing sometimes when i start it in the morning.
05-12-2015, 09:55 AM
#5
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Car: GTA 89
Engine: L98
Transmission: TH700
Axle/Gears: BW 9 bolt
Re: 350 TPI w/MAF start but won't stay
speed density ? I suppose yes
today evening I'll do this to my car and we will see a result
but in my case interesting is that my car rans fine three days ago when I drove about 100miles....and I parked the car and yesterday when I tried to start situation like this :/
Last edited by pawcio; 05-12-2015 at 09:58 AM.
05-12-2015, 10:02 AM
#6
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Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 350 TPI w/MAF start but won't stay
Not awake yet!Yes, same procedure
Ya never know about sensors...good one day, bad the next. It's defiantly worth the effort though
05-12-2015, 12:34 PM
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Transmission: 700R4
Axle/Gears: 2.73
Re: 350 TPI w/MAF start but won't stay
Same issue with my car, i drive it daily and it will do the no idle condition once a week or so, always in the morning
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05-12-2015, 12:40 PM
#8
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Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 350 TPI w/MAF start but won't stay
Sounds like sticky IAC. Remove it and clean it up/replace it and then do the set procedure for it.
https://www.thirdgen.org/newdesign/tech/tpimod2.shtml
https://www.thirdgen.org/newdesign/tech/tpimod2.shtml
05-13-2015, 01:10 AM
#9
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Car: GTA 89
Engine: L98
Transmission: TH700
Axle/Gears: BW 9 bolt
Re: 350 TPI w/MAF start but won't stay
Sounds like sticky IAC. Remove it and clean it up/replace it and then do the set procedure for it.
https://www.thirdgen.org/newdesign/tech/tpimod2.shtml
https://www.thirdgen.org/newdesign/tech/tpimod2.shtml
but in my opinion the problem happened when I take the battery off the car to recharge when I parked car. Looks like the memory in ECM is not good and ECM lost the sensors data? ECM replace?
EDIT: can sticky and clogged IAC can cause slow reaction to gas pedal? I also have a 99 M5 and gas reaction is totally different.
Last edited by pawcio; 05-16-2015 at 04:29 PM.
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