1993 Loyale wagon, EA82, SPFI....
I've been trying to hunt this one down for a while and have had really no luck so far....
The loyale only gets about 250ish miles per tank of gas & idles poorly - around 500 rpm at idle with intermittent hunting & missing at idle.
What I've replaced, all within the past few months....
spark plugs (with NGKs)
spark plug wires
Throttle Body, with TPS
Intake manifold gaskets (one was torn)
When checking the timing, the car is around 18 degrees BTDC and the disty is at the end of its travel. I connect the green connectors when testing timing, but from what I've read the Check Engine light should come on once these are connected, but this light does not come on when the green connectors are connected on my car. I noticed that there was a .8 volt drop between the ECU and the one connector with the brown wire. I ran a jumper wire from the ECU directly to the green connector with the black / red wire in order to bypass any corrosion in that circuit and the light still doesn't come on.
I've checked the timing belts and they don't seem to be off a tooth. When I took out & re-installed the disty, the rotor was pointed directly at the #1 wire position on the cap, so I don't think I installed it off a tooth, but I'll re-check.
I've sprayed starting fluid around the hoses for leaks and haven't noticed any difference in the idle.
My next move is to check:
I also have a backup ECU that I was going to swap out as well.
I'm just kind of scratching my head on this one and was wondering if anyone had any other ideas or experienced anything similar to what I'm going through?