I recently put in a jdm gsr in my DA and I am currently using an ECU from a B17 that has been chipped with mugen (It has unlimited revs and whatever, I got it from a friend) . Each time I rev the engine pass 5,000rpm the check light comes on. I checked all the wires and they seem to be all good. Plus for some weird reason, when my car sits and idles, the rpm would go up and down 500 rpm. When the engine is warmed it sometimes idles at 800 rpm but after driving the car for a while and when coming to a stall the rpm would idle up and down again. LMK what you think.

 

Thats really wierd, maybe its an emissions sensor issue or something?

 

timing>?

 

I checked the timing and it's fine, I'm guessing it's something with some of the sensors.

 

Pull the code and let the ECU tell you why the light illuminates.

 

tps calibration

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91whiteZCrex &raquo;</TD></TR><TR><TD CLASS="quote">tps calibration</TD></TR></TABLE>

thats what i was thinkin....check that tps

 

Why do people try to guess? The ECU displayed a CEL, pull the code and it will tell you exacly why. It makes diagnosing the problem much more efficient.

OP, look in the FAQ thread for CEL code pulling instructions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">Why do people try to guess? The ECU displayed a CEL, pull the code and it will tell you exacly why. It makes diagnosing the problem much more efficient.

OP, look in the FAQ thread for CEL code pulling instructions.</TD></TR></TABLE>
True. This is the very first thing you should do when they get a CEL.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89Turbo_Angel &raquo;</TD></TR><TR><TD CLASS="quote">
True. This is the very first thing you should do when they get a CEL. </TD></TR></TABLE>

i thought it was guess n check.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91whiteZCrex &raquo;</TD></TR><TR><TD CLASS="quote">

i thought it was guess n check. </TD></TR></TABLE>

haha. Replace everything and then check for CEL code.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91whiteZCrex &raquo;</TD></TR><TR><TD CLASS="quote">

i thought it was guess n check. </TD></TR></TABLE>

HAHHAHHA, its a shame thats most small mechanics slogan!

any more news on the CEL light ?&gt;

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hpimichael02 &raquo;</TD></TR><TR><TD CLASS="quote">

HAHHAHHA, its a shame thats most small mechanics slogan!

any more news on the CEL light ?&gt;</TD></TR></TABLE>

im a diesel mechanic and unfortunately sometimes thats what i have to live by


it takes 2 seconds to check the CEL and this guys still got nothing...