Hi,

My '86 5K TQ don't want to start after an air and fuel filter change. I did get it started twice by cranking but as soon as it
starts up it will die if I don't hold the gas. It drives great but dies upon attempting to idle. It starts no problem when the car
is moving and is put in gear. What could be the problem? Could it be air in the system? What is the fuel filter change procedure,
does the system have to be bled afterwards? Also, before I touched the car today, when turning off the car when the engine is warm,
the car won't start again for 5-8 minutes, after that it starts no problem. Though it never has any problems starting when the car
is moving and is put in gear. Cold starts are immediate, though not anymore of course.

Thank you in advance for any help!
cp

 

It sounds like you have a vacuum leak.

Or, you may have disconnected the wires to the throttle body for the switch that
controls the ISV.

No special bleeding procedure for filter changes.

Tony
Current: 98.5 A4 1.8TQM
Previous: four T44s '84 - '91

cp wrote:
> Hi,
>
> My '86 5K TQ don't want to start after an air and fuel filter change. I did get it started twice by cranking but as soon as it
> starts up it will die if I don't hold the gas. It drives great but dies upon attempting to idle. It starts no problem when the car
> is moving and is put in gear. What could be the problem? Could it be air in the system? What is the fuel filter change procedure,
> does the system have to be bled afterwards? Also, before I touched the car today, when turning off the car when the engine is warm,
> the car won't start again for 5-8 minutes, after that it starts no problem. Though it never has any problems starting when the car
> is moving and is put in gear. Cold starts are immediate, though not anymore of course.
>
> Thank you in advance for any help!
> cp
>
>

 

> It sounds like you have a vacuum leak.

Vacuum leak? Are there any other tell-tale symptoms I should look for? Today, after getting back from a trip (in another car) I went
to start it up after letting it sit for a couple of days and it started right up, idled fine and the problem started again a couple
of minutes later.

> Or, you may have disconnected the wires to the throttle body for the switch that controls the ISV.

You know, I might have nudged something. Will take a look at the factory manual what it could be.

Thank you!

cp