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Username Post: Cold Start Problems with Idle (1985)        (Topic#336987)
jazzwineman 
Forum Newbie
Posts: 2

Reg: 06-26-16
06-26-16 03:23 PM - Post#2636213    

I have a friend that has a 1985 Monte Carlo with about 90k on it. It is the 4.3 V6 with fuel-injected with throttle-body fuel injection.

The problem is that when he tries to start it in the morning, he has trouble backing out of the driveway without the car stalling and even then, it will try and stall at stops unless he keeps the engine revved Once it is warm or hot,. There is no problem.

I understand newer cars, but this is not in my wheelhouse. He thinks that undoing the battery will cause the car to relearn properly and I think that an error will error out - co matter how many times it relearns.

I tend to think this is a choke issue or maybe even an IAC, if one is present. There is some sort of sensor in the middle of the air filter area, if my memory is correct and I have no idea as to what that is.
Where would you generally think this type of problem on this engine may be and what might be other possibilities.

Thanks in advance.

Tom in Dallas/Plano



 




wagonman100 
Super Senior Member
Posts: 14086
wagonman100
Loc: Baltimore, MD
Reg: 11-27-04
06-26-16 05:02 PM - Post#2636235    
    In response to jazzwineman

I'm not familiar with TBI systems, but I do have an opinion of what it could be. There should be no choke on a TBI system. It probably has a throttle position sensor. These don't normally go out of adjustment, but they can go bad. But I would think that the problem would still be present even when the engine warms up if that were the case unless something changes when the computer goes into closed loop mode. It could be an air temperature sensor or the coolant temp sensor as well. If it has an IAC, that would be the first place I would look though.


Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
jazzwineman 
Forum Newbie
Posts: 2

Reg: 06-26-16
06-26-16 06:40 PM - Post#2636251    
    In response to wagonman100

Thanks- it is a starting point.

Tom



 




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