Question'86 Celica...no spark at all
I recently acquired a 1986 Toyota Celica. I have no book or wiring diagram on this car. yet?
It is a front wheel drive car with a 2000 16 valve engine.
It runs very well, but recently failed the CA emissions test, scoring too high on the NO test. The other emissions
passed as did the visual inspection. It failed the Functional test because the timing was way off (25 Degrees advance instead of 10 degrees.). I figured that this can cause excessive NO emissions, so I adjusted it to see if that would help the NO. I did that with no probs & the engine ran well.
I also disconnected & reconnected the battery to reset the ECM. (I don't believe this caused
the new problem.)
In addition, the water temp gauge was/is not workng. reason unknown. When I short the sensor connector wires, the gauge still does not react. I haven't tested the sensor yet. All other gauges work ok.
In an effort to troubleshoot this, I opened the fuse & relay box near the battery and noticed that someone had
jumpered the #1fan connection (2 holes on left) so that the fan would spin with the ignition key set ON. The relay was missing. While in there, I inadvertently shorted the #1fan relay socket (2 holes on right, Arghh.) and heard a small click from somewhere close by.
Now the engine is getting no spark at all... and when i turn the key to ON, only the Brake & Seatbelt lights come
on.
I can see no prob with timing belt or other mechanical devices. I can't find any blown fuses under the hood.
The distributor appears to have an internal coil as there is no HT wire coming from the center of the cap.
Question. Did I zap something causing the spark to disappear??? Where did the spark go?
AnswerCharles,
I think this old Celica uses a fuse link near the under hood fuse box. I think you have have blown it when you jumped the fan.
Next when you set ignition timing you have to jump TE1 and E1 in the diagnostic connector and keep the throttle closed. This keeps the computer from advancing the timing until you set the base timing.
Last, most NO emissions are caused by the EGR valve not functioning so I would check it carefully.
Good Luck!!
