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View Full Version : Ecu problem? Or a deeper issue?


Matt191
03-15-2013, 05:23 PM
Alright guys, I don't like coming here for help but I have searching and tinkering with my car for 2 days now and I cannot identify my problem at all. I have a stock sr20det redtop in a 91 hatch. I can start my car fine and idle just fine get it warmed up and it will rev real hard and good. Once in gear and driving however an issue starts.... 2000k-3000k falls flat on it's face nothing at all no power car will die. I have my consult hooked up and managed to get a quick log of first gear pull but not much more. I have tried two different mafs with a BRAND new harness and nothing. No boost leaks nothing. A side note however, the red light on the ecu seems to stay on at certain times but not always. It's very intermittent, but it will come on and turn off I just don't know where to go from here.... A bad ecu??? Pulled it apart and don't have any fried areas on it at all:( any help would be appreciated!

Matt191
03-26-2013, 06:50 PM
It has been two weeks now and I have still not figured about what this stupid car is doing. Does anyone at all have anything I could try to maybe fix this problem. I did get the car up to 5k but it still does the same thing a BRICK wall. Any feedback would be appriciated

OrangeVirus1
03-26-2013, 07:00 PM
wiring problem, maf, tps, coolant temp sensor, injectors, fuel filter, low compression, mechanical timing off, ignition timing off, bad coils, bad spark plugs, ecu, relays, bad ground, low tire pressure, boost leak, bad turbo, bad wastegate, wastegate not properly hooked up, turbo siezed, lean AFR's, dirty intake, knock sensor

I can go on :)

Matt191
03-26-2013, 07:23 PM
Ugh well thanks. You just reminded me why I don't come for help brand spanking new wiring harness. Car ran fine before new chase sys harness. Ecu codes come back as 11 &12 but when tested and cleared codes turn off.

KoukiMonsta
03-26-2013, 09:02 PM
Ugh well thanks. You just reminded me why I don't come for help brand spanking new wiring harness. Car ran fine before new chase sys harness. Ecu codes come back as 11 &12 but when tested and cleared codes turn off.

I'm getting a code 11 currently. Car seems to run ok. Fresh build so hasn't seen high rpms. No idea why it's coming up. If CAS is bad car shouldn't run.

Something to think about, the wiring may not be correct. I've heard a few things like that from him..

Your ecu led going on/off concerns me. Got someone to swap ecu with?
I wish I could help more... Ill think about it more

Matt191
03-26-2013, 11:30 PM
Thank you for the reply it is nice to get someone to bounce ideas off. I honestly am not real impressed with this harness, for the price I would of expected connectors to be pinned correctly. And the connectors themselves do not fit perfectly. I even called the them on these incorrectly pinned plugs.... NO REPLY! Really pissed me off but my bay does look nicer that is for sure. But back to the issue tonight just before packing it in I managed to get a knock code (34) so tomorrow I will get back to yall and let you know because I have been stumped for weeks.

Matt191
03-27-2013, 06:56 PM
So, no luck the knock sensor checked to be fine, I'm stumped as of right now the codes I am getting right now is 11 and 34. Tomorrow I can try to go back do the whole diagnostics on the both the knock sensor and the cas. I really think the cas is my trouble maker here.