88 80Q won't start or idle when cold unless you crack the throttle

[Joshua van Tol]

Have you checked the operation of the auxiliary air valve? Sometimes  
they can stick, and a good cleaning with carburetor cleaner often can  
perk them up. Failing that it could be that the valve isn't being  
controlled correctly by the ECU.


On Oct 13, 2006, at 10:26 PM, MXHOWES at aol.com wrote:

> I posted this question a few months ago and only got one reply  
> suggesting a
> stuck air meter plate which wasn't the problem any other suggestions?
>
> My 88 80Q was parked in the garage for 6 months undergoing a   
> heater core
> transplant. I just got it running again but I picked up a  strange  
> startup
> problem. The car will not start when cold unless you press  down on  
> the gas just the
> smallest amount. If you crack the throttle, it will  start right  
> up, if you
> take your foot off it tries to idle at about 400  RPM.  When cold  
> you can make
> it idle ok ~900 RPM by applying a little gas  by foot, the mixture  
> is correct
> because no mater how cold it is it idles  smoothly (with your foot  
> on the
> gas). After a few minutes (or miles) you can  remove your foot and  
> it will idle as
> normal. When hot, just  hit the key  and it starts up right away.   
> The heater
> core replacement requires a  complete dash removal and lots  of  
> wires were
> disconnected. I didn't have  to touch any wiring under the  hood.
> The car started perfectly when cold  before the heater core  
> operation and
> still runs great, it's just that something  isn't right.   Any ideas?
> Thanks,
> Jim
>
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