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#4309164 - 12/05/09 04:42 PM ecu problem??
colgatekiller colgatekiller Newbie Registered: 02/07/07 Posts: 28	Hi all, i tried searching already but no results. sorry if this is a repost, i havent been on this website in a while. I have a 06 si and my battery died. I was unaware that with the computer system in these cars it can potentially fry the ecu. Whats going on is i have about a 100lbs of compression in my engine when it should be around 180 and no one can figure out why. Im convinced its the ecu or a faulty sensor somewhere but it seems no one can help me out. I Been trying to avoid going to the dealer cuz i have a race header and an exhaust on it and i don't want any warranty problems. if necessary i will be restoring it to stock and taking i there but i wanted to see if you guys had any input before i did that. basically my question is, has anyone had any experience with this? If so what was the problem? thanks in advance
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#4309407 - 12/05/09 06:16 PM Re: ecu problem?? [Re: colgatekiller]
Design Design Post Master Supreme Registered: 12/11/02 Posts: 11581 Loc: The OC	Originally Posted By: colgatekiller Hi all, i tried searching already but no results. sorry if this is a repost, i havent been on this website in a while. I have a 06 si and my battery died. I was unaware that with the computer system in these cars it can potentially fry the ecu. Whats going on is i have about a 100lbs of compression in my engine when it should be around 180 and no one can figure out why. Im convinced its the ecu or a faulty sensor somewhere but it seems no one can help me out. I Been trying to avoid going to the dealer cuz i have a race header and an exhaust on it and i don't want any warranty problems. if necessary i will be restoring it to stock and taking i there but i wanted to see if you guys had any input before i did that. basically my question is, has anyone had any experience with this? If so what was the problem? thanks in advance I have not heard of the ECU's going bad on these cars at all. The only issue appears to be the security system/ingnition in circumstances where the ECU is without power for an extended period of time. I did a quick search and the only issues related to low compression on the K20 appear to be related to detonation. So my recommendation is the dealer. In any case, good luck. _________________________ 09 CWP MS3 01 Echo 5MT 00 EBP Si - Sold - Pics 89 Camaro - Sold CSI. What's your diversion?
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#4316704 - 12/08/09 06:48 AM Re: ecu problem?? [Re: Design]
Alien21 Alien21 Poster Registered: 05/05/06 Posts: 240 Loc: Orange County, NY	try doing a wet compression test if the numbers go up its ur rings. it also could be carbon deposits on the valves. pour a some oil into the cylinder but not alot and do the compression test again
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