Hey guys I have a quick question. I finally managed to get my engine and transmission in and everything seems to be running good with the exception of an idle surge. It seams to idle normal until it warms up then it surges from about 1200 to 1800. Also if i rev the engine it will idle normal for a few seconds and then surges again. I have replaced most of the vac lines and do not seem to have any leaks. Furthermore, I have tested the AFM and TPS and both tested within specs. If I unplug the TPS the idle raises to about 2k but no longer surges (not sure if this indicates anything or not). I did check for codes and the only one I got was 43 this may be because of how I have the starter wired because I have an auto engine harness but manual ecu and body harness. Thanks in advance for any help on this matter.
Idle Surge
- Thread starter Jay C
- Start date
Sounds like a misadjusted tps. have you tried adjusting it at all?
And have you set ign timing? Timing needs to be set after this problem is fixed however and idling at around 700.
And have you set ign timing? Timing needs to be set after this problem is fixed however and idling at around 700.
I had checked that the TPS was within spec but hadn't actually adjusted it. So yesterday I pulled the Throttle body cleaned it and adjusted it based off of the TSRM. After adjusting it was re-bench tested and everything was well within spec. Today I reinstalled the TB and still have the same silly idle surge. Engine revs fine and will find idle for a few seconds after reving then starts surging again. Any suggestions ?
The STA signal should be the same for M/T and A/T. The NSW switch is what is different. I would expect the car to be hard to start with the STA signal bad, it is used a lot in the ECU code for controlling the fuel and timing during cranking.
The ISC was bench tested with an Ohm meter and was within spec. I did not bench test beyond (with battery power) as I figured I would just remove it and clean it while off. As for the bearings I bought them at a machine store down the street they were in stock which is a score. However the lower 608V bearing is commonly used in rollerblade and skateboard wheels.