Hey guys I've been having some issues with getting my evo to idle. I just finished doing a rather large list of mods and I'm now having a lot of problems getting the car to run right. For about the past month I've been trying to figure out way my car just isn't holding an idle. I've tried everything possible thing I could of think of to fix it. Last weekend I found a big vacuum problem on my intake manifold which I was rather certain it would if my idle problem but after finishing the fix the car isn't wanting to even start now. I was thinking its just my battery not putting out enough volts to start the car but I charged it back up to just over 12v. I sounds like it wants to do something but then nothing.

Now to just explain the issue with the idle. What was happening is the car would start but would only stay on if you kept the throttle at 15% or higher. I was really rough and was holding and afr of 10-12. I've tried pulling fuel and timing from idle and it didn't really do much. I've also done a compression check(all 4cyl were damn near perfect), Boost/vacuum leak test, cleaned my mass air sensor and my timing is dead on! Also my ABS light keeps flashing when the car is on. A buddy of mine did some research on it and he found out that the flashing ABS light means there is a bad module somewhere, but not really saying what or where it is.

So pretty much I'm just all out of idea's and would love your guys input on this. Thx guys.

 

Have you checked your tps sensor? Also not sure if evos have it but iac sensor(Idel Air Control).

 

Yeah I took both sensors out and visually inspected them. I can't really tell if there is an issue with them though. But my big issue right now is the car isn't wanting to start after fix my vacuum issue.

 

I had a similar issue, and turned out to be a wire in the FP sender unit... Not the clip, but one of the other 2 wires was pulled out ever so slightly...

 

Sry but I'm not really sure what an FP sender unit is.

 

maf plugged in?

 

Yep it's plugged in.