Okay...'94 GS-R in a '94 Civic.

I just got a new chipped P28 in the car and it runs great, but every now and then the car will hit the rev limiter at 7,200 rpm's instead of the 8,200 rpm's that it's set at.

It also has one of the CEL shift lights that's set to 7,800 rpm's, but on those rare occassions it throws the CEL at 6,800 rpm's.

I pm'd the ECU's tuner and he said it may be a problem with the Tachometer Signal in the wiring harness...anybody ever heard of anything like this?


I think that that might be the issue, but I just needed to throw the idea at somebody else. Also, VTEC is set to engage at 5,500 rpm's and it will engage at 5K on those occassions.

 

check the connector of the speedo head there may be corrosion, seen it often and fixed many of them.

have a look then post back what you see

 

I'll take a look at that tomorrow

 

Still doing the same thing...

 

check and see what full throttle shift is set at. it probably isn't the problem, but you never know.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JKov240 &raquo;</TD></TR><TR><TD CLASS="quote">Still doing the same thing... </TD></TR></TABLE>

if you are throwing a code at 6800 rpms, then chances are the ecu has the code saved. pull the code and this will be the last piece of the puzzle.

 

^The ecu is chipped to throw the CEL at that certain RPM as a shift light.

I emailed the tuner and I'll probably be sending it back for them to look at because all connections are good and clean, so there's nothing else it could be BUT the ecu itself, right?