Well I have checked the ground connector you spoke of and mine was clean and in good condition. I did try bypassing it and I loosened the connection at the battery (for the second time) and cleaned the connection there also. I also tried replacing the 3 relays on the fender well. Still nothing changed. I've got over 12 volts at the relays.
I believe that what is happening is, when the vehicle shifts over to the computer to control the timing, something is sending ironious information causing the EEC to go haywire and throw the timing or fuel amount all out of whack. What ever it is, it comes and goes, and is disabled when you re-start the engine for just a short period, then it kicks back in. It is a timing issue, or too much fuel issue, because the fuel is present, and fire is present. This is evidenced by the black smoke and rich gas smell from the exhaust.
I have replaced the SPOUT connector and even replaced the SPOUT wire all the way back to the EEC and no change. The question is, (What can cause a code 18 other than the connector not working or the wire not being grounded or open. Everything at the distributer is new. EEC is new. New wire all the way from distributer to EEC. Why does it still show an open or grounded SPOUT connection?
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Originally Posted by martylephew
I did not get the "18" code, but, I was getting everythibg else. The thinking behind the corroded wire is this: If you measure any voltage on a vehicle, you connect the ground lead of your meter to ground (reference). Now, if you have a bad ground, every voltage you measure will be "off" by the amount of resistance that any corrision may cause. What this means is this:
The EEC (computer) is continously checking voltages that return from the "input" devices, and is sending voltages out to the different relays, valves and pumps. If the ground is bad it would appear to the computer that the voltages comming back from the devices like throttle position, O2 sensors will be "low" because they are measured against the ground. Having said this, the computer will generate error codes because it is not recieving a "GOOD" signal back from the devices. It also means that the voltages going out will be low also, which in turn makes the computer think that the world is comming to an end as far as the engine is concerned.
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