Re: GTV6 Problem

[Alan Lambert <gerard@domain.elided>]

Dave,

I have had the same problem--agree it's underhood temp, not engine 
temp--or else an engine component that takes forever to warm up.

It seems to be fixed--but I don't know what did it--replaced the throttle 
position sensor, retimed the valves, changed the O2 sensor and 
tuned---which of these helped, I don't know.




On Fri, 28 Jan 2000, DaveM wrote:

> I've tried to help lots of people on the Digest with
> their problems and now I have one that has me baffled.
>  1984 GTV6.  Runs great, starts fine!  BUT! When it
> idles for any length of time it starts popping,
> running rough and quits. It seems to run if I rev it
> over 3000 or so, but as soon as you try to drive it,
> and it falls below that, it loses power, runs very
> rough and sputters to a stop.  It will restart and run
> fine after sitting for a half hour or so. Drive in
> lines at banks/fast food... traffic jams...  are
> deadly!!!  No matter what the weather.  
> It seems to be more related to either underhood
> temperature or some other static situation than it
> does engine temperature.  Although, it's never done it
> unless the cooling fans were running.  They never come
> on in normal driving, only when sitting.
> I have spare everything and have changed:
> 
> Coil
> Ign. Module
> ECU
> Hall Sensor, then whole distributor
> 
> I've removed all connectors and cleaned them including
> all ground connections.  It does it with O2 sensor
> connected or disconnected.
> I connected a Bosch Autoforce tester (the expensive
> one in the briefcase thing) and pretty much eliminated
> any of the sensors or fuel system components except
> pressure regulator and AFM (the Autoforce tester
> checks the temp sensor in the AFM but not resistance
> of the flapper).  I have not checked fuel pressure as
> yet nor have I changed spark plugs or wires.
> 
> The problem is thermal and I believe underhood.  I get
> no black smoke indication of overly rich, but I
> haven't actually checked Stoich.
> 
> Any ideas would be appreciated.
> 
> Dave Miller
> Deltona, Florida
> 
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================================================================================
Regards,
Alan G. Lambert___________________________________<gerard@domain.elided>
           *******Los Altos, California (office)*******

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