Need help. Power loss.
08-14-2010, 02:14 PM
#1
Need help. Power loss.
Ok, I have an 06.5 Revup Base Z.
I decided to install my MREV2 and went through the process of tearing the engine down. Got everything off, and just finished removing the lower collector.
Decided, since I have 92K on the clock, that I'd go ahead and change the spark plugs, since I was in there anyway. Got the same NGK Laser Platinum plugs that come OE in the Z.
Put everything back together, and was getting p0300. Random cylinder misfire. Did some troubleshooting, and found that I plugged in cylinders 4 and 6 backwards. Once I corrected this, and cleared the code, the car idled fine.
Finished putting everything back together, and tried driving around the block. Engine does not rev past 5K, when in Neutral, and won't go above 3K when driving. Also, no CEL for misfire, but when I drive above 2500rpm the CEL starts flashing... Even tried put the original plugs back in.
Also, noticed today that the left bank has no exhaust flow. I have the Injen SES true dual, and it's only flowing out the passenger side.
Cleaned the MAF and intake filter. and am considering cleaning the throttle body, as there's a lot of crap in there, but all I really want is for the engine to run right. Any ideas?
Engine ran PERFECTLY before I did any of this.
I decided to install my MREV2 and went through the process of tearing the engine down. Got everything off, and just finished removing the lower collector.
Decided, since I have 92K on the clock, that I'd go ahead and change the spark plugs, since I was in there anyway. Got the same NGK Laser Platinum plugs that come OE in the Z.
Put everything back together, and was getting p0300. Random cylinder misfire. Did some troubleshooting, and found that I plugged in cylinders 4 and 6 backwards. Once I corrected this, and cleared the code, the car idled fine.
Finished putting everything back together, and tried driving around the block. Engine does not rev past 5K, when in Neutral, and won't go above 3K when driving. Also, no CEL for misfire, but when I drive above 2500rpm the CEL starts flashing... Even tried put the original plugs back in.
Also, noticed today that the left bank has no exhaust flow. I have the Injen SES true dual, and it's only flowing out the passenger side.
Cleaned the MAF and intake filter. and am considering cleaning the throttle body, as there's a lot of crap in there, but all I really want is for the engine to run right. Any ideas?
Engine ran PERFECTLY before I did any of this.
Last edited by dmroberson; 08-15-2010 at 08:19 PM.
08-14-2010, 05:53 PM
#2
Recheck all your coils and the connection.
Also, check if you have a vacuum leak.
Is the engine still misfiring? Flashing CEL usually means that. Sounds like one bank is not firing/coils out of sync.
Also, check if you have a vacuum leak.
Is the engine still misfiring? Flashing CEL usually means that. Sounds like one bank is not firing/coils out of sync.
Last edited by shiftdrift06; 08-14-2010 at 05:55 PM.
08-15-2010, 01:52 AM
#4
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UPDATE:
op left his car at my house she sat there all day after having the throttle body clean'd out...so around ten at night I put here back together...start her up and everything sounded great...let her idle for about two minutes then proceeded to cruise around the block...everything sounds good. shifting around 2800-3500rpm...until I give it gas after that..trying to pass 3500rpm is goes from sounding great to ****...seriously sounding like it's about to blow up...
no CEL light at all..just what I can best describe as a bogging noise...
I notice a exhuast leak...question is a big enough whole in the exhuast enough to choke the car under WOT?
question of the day
op left his car at my house she sat there all day after having the throttle body clean'd out...so around ten at night I put here back together...start her up and everything sounded great...let her idle for about two minutes then proceeded to cruise around the block...everything sounds good. shifting around 2800-3500rpm...until I give it gas after that..trying to pass 3500rpm is goes from sounding great to ****...seriously sounding like it's about to blow up...
no CEL light at all..just what I can best describe as a bogging noise...
I notice a exhuast leak...question is a big enough whole in the exhuast enough to choke the car under WOT?
question of the day
08-15-2010, 08:09 PM
#5
not sure. I had a quarter-sized hole in the left side of the exhaust, at the axle-back, where the exhaust hangar broke off, from that steel plate on Kamehameha Hwy, and it ran fine. Rasped terribly, but ran fine.
Last edited by dmroberson; 08-15-2010 at 08:21 PM.
08-16-2010, 01:59 AM
#7
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08-16-2010, 06:31 AM
#8
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08-16-2010, 06:23 PM
#13
Ok, thanks. I'll see what comes up when I head back up to work on the car.
I was thinking maybe I hurt the MAF. Could have possibly plugged it back in, while the insides were still wet... Was pretty sure I let it sit long enough...
Guessing the TB is freaking out cuz of the MREV2?
Guessing the TB is freaking out cuz of the MREV2?
Last edited by dmroberson; 08-16-2010 at 06:25 PM.
08-17-2010, 12:23 AM
#16
Unfortunately, I'm not in NC anymore, otherwise CIN would have my car lol
Last edited by dmroberson; 08-17-2010 at 12:25 AM.
