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idle problem 91 5.7 tpi

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Old 09-26-2018, 09:13 AM
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idle problem 91 5.7 tpi

Hi to all .

I have a Z28 year 1991 5.7 TPI
The car sat in the driveway for a whole year and had gone well before.
This week when I was chraing to moved it the car was cold and the columns were high , when I switched to DRIVE mode
The engine goes off and so on every time I switch to DRIVE.
I changed the sensor's TPS and replaced the sensor of the AIC and still have the same problem I cleaned all the throttle with material and it did not help.
When the engine heats up, it can not hold columns and goes idle.
Need help please.
Old 09-26-2018, 10:55 AM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: idle problem 91 5.7 tpi

I’m betting there’s varnished fuel/deposits in the injectors.
Old 09-28-2018, 02:00 AM
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Car: 1991 Z28 1LE
Engine: LS1
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Axle/Gears: 3.42
Re: idle problem 91 5.7 tpi

Originally Posted by Tuned Performance
I’m betting there’s varnished fuel/deposits in the injectors.

Or ohm test the injectors and see if you got some out of spec. Looking for 12-16 ohms of resistance cold and hot.
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