Re: ENGINE LIGHT

[e6941tb@ix.netcom.com]

Glen Abel wrote:
> 
> 
>      I recently purchased a 86 5k TQ I ran it for a couple of days on a
>      friends dealer plate to get the bugs worked out as any used car will
>      have.  When It runs it runs fine... staring is another  thing,  I
>      noticed one time when It would not start and Jumped the fuel pump
>      relay with a paperclip. Further investigation showed a fuse missing on
>      the top of the relay.

Glen, it's not missing, it was never meant to be there. A popular misconcept.
Another one would be the *extra* fuse in the box, which people tend to take out of 
its nest and then wonder why the CIS brain is dead.

>	The schematics tell me it supplies power to the
>      cold start valve and goes to the O2 control unit. When I put the fuse
>      in the little symbol of the engine with the lightning bolt through it
>      turned on, on the Dash.  Does anyone know how the 2 are related.

Correct. By inserting the fuse you are activating the dump code sequence or the 
test CIS sequence, depending on when you are inserting the fuse. On a running 
engine it would be the former or if you insert the fuse and THEN turn the ignition 
ON -- the latter.

The flickering Check Engine light will give you the binary readout of the fault 
codes (if any). 4444 -- long pause ---4444 etc indicates a no fault condition.
 

-- 
Igor Kessel
'89 200TQ - 18psi (TAP)
'98 A4TQ - on order...again. For the third time and counting.
Philadelphia, PA
USA