Vehicle make/model = 2002 Grand Prix GT
Mileage = 92458
Engine size = 6 cylinder
dash lights = no
codes = no
work done prior = diagnostics at GM dealership
work done to repair = bought new battery
tech = KK
question = My car will sometomes die on the first startup and then
crank on the second try. The rpm gauge will jump to about 1500 rpm's, then
drop to zero and then level off at about 900 rpm's. It has also started
to die when you put it in park and it has died when you turn the air
conditioner off. We took it and had a diagnostics ran but they could not
find anything. We also have the abs and trac light on and we had that
reapaired about a year ago or so we thought. We recently moved to Texas
from South Dakota also and I know heat can cause more problems. So
that is my question. What causes this?
JK:
Couple of things i would suggest. Clean the throttle body bore, plate, idle air control
valve(IAC) and its bore. If these things have carbon on/in them, it will cause the problems
you describe. A leaking fuel pressure regulator can also cause this. When they leak, fuel
enters its vacuum hose, and can also cause these problems. Let me know what you find,
KK
Mileage = 92458
Engine size = 6 cylinder
dash lights = no
codes = no
work done prior = diagnostics at GM dealership
work done to repair = bought new battery
tech = KK
question = My car will sometomes die on the first startup and then
crank on the second try. The rpm gauge will jump to about 1500 rpm's, then
drop to zero and then level off at about 900 rpm's. It has also started
to die when you put it in park and it has died when you turn the air
conditioner off. We took it and had a diagnostics ran but they could not
find anything. We also have the abs and trac light on and we had that
reapaired about a year ago or so we thought. We recently moved to Texas
from South Dakota also and I know heat can cause more problems. So
that is my question. What causes this?
JK:
Couple of things i would suggest. Clean the throttle body bore, plate, idle air control
valve(IAC) and its bore. If these things have carbon on/in them, it will cause the problems
you describe. A leaking fuel pressure regulator can also cause this. When they leak, fuel
enters its vacuum hose, and can also cause these problems. Let me know what you find,
KK
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