85 Camaro won't idle without gas & running rich after battery disconnect
10

Asked by Earl Apr 19, 2017 at 04:50 PM about the 1985 Chevrolet Camaro Z28 Coupe RWD

Question type: Maintenance & Repair

I recently bought a 1985 Z28 Camaro with the TPI
(Fuel injected) 5.0L 305 in it. The car was tunnjng
fine until I disconnected the battery. Upon
reconnecting it the car started dying at start up and
refusing to idle on it's own if I didn't give it gas. I
figured a sensor problem was the case so I
removed and cleaned the:

- Maf sensor
- Throttle Body
- Idle Air Control Valve

After putting everything back, the car now is
experiencing the same idke problems but is also
running rather rich and putting out a lot of black
amoke from the exhaust. I should also mention that
trying to apply too much throttle will occasionally
stall the engine as well.

I am trying to figure this out but am torn on what to
direct my attention to. My guesses are problems
with: MAF Sensor, Throttle Position Sensor, EGR
Valve, or the Idle Air Control Valve.

Any experience or advice?

3 Answers
10

Earl answered 7 years ago

I've tried driving it and it will stall when coming to complete stops if I don't give it gas. Also, upon accelerating from a stop there's a noticeable absence of power, and I can feel the transmission shifting hard/not wanting to shift so easily

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224,145

Rowefast answered 7 years ago

If the engine is holding back when you try to accelerate, may be a plugged catalytic converter.

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