EA Possessed? please help
Some advice greatly appreciated. Have an 89 EA 3.9CFI wagon with some odd problems.
If I let her just creep away from dead stop it will accelerate albeit slowly to around 40kph. At 12kph itll change to 2nd and at 22kph into top unti I reach 40kph................mmmmmmmmmmm ...........bit strange. It now also appears to be misfiring at idle (feels like a tq20cam as the body starts to rocknroll) and at times idle will go up and then go down, but out on the highway it runs great. Sometimes when I turn her off it will pre-ignite, other times it will not depending whether idle is high or low at the time I stop.
Checked all sensors via ecu and all seem to be working. Did a diag and got no permanent faults.
Engine was remanufactured about 20k ago, so compression and engine internals are fine.
Ok so I adjusted the timing for the hell of it and reset the base idle. No significant change. Noticed that leads were a bit dodgy and no4 plug a bit rich. Assumed that leads and plugs may have been contributing to the problem so changed all leads and plugs but this did not seem to make any real difference.
Any ideas truly appreciated this is drivin me nuts