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Re: ENGINE LIGHT
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.
'89 200TQ - 18psi (TAP)
'98 A4TQ - on order...again. For the third time and counting.