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R32 gtst hot issues

Hcr32typem
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Hcr32typem Enthusiast

Hcr32typem

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R32 gtst hot issues

Hey,

So ive got a 1992 gtst type m that i picked up recently. Its got 100,540km on it now and i just did the timing belt, put on a cheap diy intake and thats it. The car is in spotless condition.

Now im having an issue with the car when it warms up. Originally it would just start hard after the car had been driven. Now the car will start fine cold with no misfires or anything, but as soon as it gets to operating temp it just stalls. If you crank it over the idle will be high, around 1800rpm and then it will start to idle hunt from about 800 to 1800rpm. If you give it any throttle input itll stop at 2500 rpm which im assuming its a limp mode?

I replaced the ignitor and checked all fuses throughout, but im running out of ideas. 

Any help would be appreciated!

Dan

20170820_153441.mp4

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Hcr32typem Enthusiast

Hcr32typem

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Small update.

I unplugged the MAF while it was idle hunting and when i plugged it back in the idle INSTANTLY dropped back to normal and the car stopped running in limp mode.

So now the car is back to starting hard after its warmed up. Itll start up but immediately die. Then it takes 10 to 15 seconds of cranking before it sort of "coughs" to life and then runs perfect again.

Hcr32typem Enthusiast

Hcr32typem

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Well i still have the factory parts and i may put it back to stock. That being said when i got the car the MAF wasnt tightened down in the inlet tube. Its a super tight fit even getting to the clamp which might be why it wasnt done up properly.

As far as i can tell this car was dealer maintained its whole life.

Hcr32typem Enthusiast

Hcr32typem

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Ordered a used maf hopefully itll help with my issues. Also going to pull my stocker apart and see how bad it is.

Reading through a few posts scattered across the net, some people said the contact points in the connector have fallen apart due to time and heat among other things.

  • 1 month later...
Hcr32typem Enthusiast

Hcr32typem

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So the idle hunt and other issues were solved with a remanned afm but im still having hot start issues.

In the morning the car fires up fine but getting in after work the car will fire up and the immediately die. Then the engine will crank for 5 to 10 seconds before it fires up. Today i noticed smoke from the exhaust and it appeared to be black. Ive also smelled fuel when the car needs to crank longer.

Is it possibly leaking injectors maybe?

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