HELP - Flashing SES, Lean bank 1, # 6 misfire, AFR reading 17 - off charts...
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HELP - Flashing SES, Lean bank 1, # 6 misfire, AFR reading 17 - off charts...
As stated above, the SES light is flashing, I am reading a lean bank 1 and #6 misfire. The care limps, shakes and hardly runs. Anyone with suggestions?
April 12 - new O2's front and back
April 12 - LTH's and ORY with SLP LM installed
April 12 - WB O2 installed and tuned
well over 12,000 miles with out a hick up until now...
April 12 - new O2's front and back
April 12 - LTH's and ORY with SLP LM installed
April 12 - WB O2 installed and tuned
well over 12,000 miles with out a hick up until now...
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check your spark plug wires, somtimes when new headers go on they might touch a wire and eventually burn threw causing the wire to arc on the head giving a missfire, also check that your wires are all seated good on the spark plugs, second check for vacuum leak, clean your MAF sensor, even try disconnecting it to see if it runs better, hows your fuel pressure?
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check your spark plug wires, somtimes when new headers go on they might touch a wire and eventually burn threw causing the wire to arc on the head giving a missfire, also check that your wires are all seated good on the spark plugs, second check for vacuum leak, clean your MAF sensor, even try disconnecting it to see if it runs better, hows your fuel pressure?
Yep...Have done this to myself before and it was not real obvious, boots were barely touching the primaries on two wires.
#6
#6 is on bank 2 so bank 1 lean is prob a different issue. you popped a coil or fried a wire most likely. if the wires are ok swap the coils with another cylinder see if the prob follows. but it could be more serious like a dead injector, bend broke valvetrain. but im betting on spark
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Come to find out it seems to be a bad ignition coil on #6. Read the spark between 15-18k when should be 10-12k. So chances are I am going to have to change out the plugs and wires since it is firing so high. Is something that the tune could have caused?
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#6 is on bank 2 so bank 1 lean is prob a different issue. you popped a coil or fried a wire most likely. if the wires are ok swap the coils with another cylinder see if the prob follows. but it could be more serious like a dead injector, bend broke valvetrain. but im betting on spark
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So tonight I tore off the intake manifold and started to clean up the mess caused by the OPSU being cracked and broke. I found tan paper in the #6 intake on the block... Thats a problem!
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How did you read the spark (and in what units are those numbers)...?
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I will see if we can get the waveforms. I have sent the PCM out to Frost for a Tune. I pulled the intake off last night and its as all gummed up on the valley cover, the PCV had deteriorated and OPSU was broken. All things I needed to do, so figured I'd do them while the PCM was gone. I found this between the Intake and the Block on #6...
I am sure that doesn't hep the matter now does it?
I am sure that doesn't hep the matter now does it?
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Here's an update.
As you can see I pulled the intake and found something in #6. Replace the OPSU and PCV system and have ordered a Catch Can. I also sent out the PCM to Frost for a tune. While waiting for the PCM to come back, I cleaned the intake, TB, MAF, Valley and several other odds and ends. Replaced all the seals on the intake (Sure there was a leak there also) and reassembled everything.
Friday night I got an email from Frost letting me know that nothing had been done in my previous tune by someone else. The only thing that had been changed was the max MPH to 200MPH... Chaps my *** on that, considering I paid $400 for the tune and some pulls on the dyno.
Seeing that I had deleted the EGR & AIR, added LTH's, ORY and SLP LM 2, SLP air lid and WB O2 and all new O2's, there should have been a proper tune. Now I have had to go back and replace plugs, wires, O2's and burned out coil packs... I hope that once I get the PCM back in that things are back to normal and no other damage was done.
As you can see I pulled the intake and found something in #6. Replace the OPSU and PCV system and have ordered a Catch Can. I also sent out the PCM to Frost for a tune. While waiting for the PCM to come back, I cleaned the intake, TB, MAF, Valley and several other odds and ends. Replaced all the seals on the intake (Sure there was a leak there also) and reassembled everything.
Friday night I got an email from Frost letting me know that nothing had been done in my previous tune by someone else. The only thing that had been changed was the max MPH to 200MPH... Chaps my *** on that, considering I paid $400 for the tune and some pulls on the dyno.
Seeing that I had deleted the EGR & AIR, added LTH's, ORY and SLP LM 2, SLP air lid and WB O2 and all new O2's, there should have been a proper tune. Now I have had to go back and replace plugs, wires, O2's and burned out coil packs... I hope that once I get the PCM back in that things are back to normal and no other damage was done.
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Got my PCM back from Frost this morning. Threw it in and started the car up. Due to the rain wasn't able to get right out and do a test drive. After running a couple of cycles it leans out and dies. Start over again and same thing...Leans out and dies... So, I jacked the front end up, rolled underneath and for ****'s and giggles, replaced the O2 on bank 2... The rain subsided and I waited just long enough to let the roads dry and took it for a drive. Long behold, there's the problem! It did force me into doing the projects I was going to wait to do until this winter. It's always the simple things, isn't it?
Guess we'll move on to other projects with it now! Thanks Frost for helping me get it back on the road! The tightened shift point from 1st to 2nd was so tight compared to the stock that it took my already ruptured disc in my back and forced it out of my spleen. Then when I mashed the gas at a rolling 30 the *** end came out and let me lay a stretch of 11's down the street. Also noticed that it doesn't dump into over drive between 45-55 causing it to bog down! One word...YES!
Guess we'll move on to other projects with it now! Thanks Frost for helping me get it back on the road! The tightened shift point from 1st to 2nd was so tight compared to the stock that it took my already ruptured disc in my back and forced it out of my spleen. Then when I mashed the gas at a rolling 30 the *** end came out and let me lay a stretch of 11's down the street. Also noticed that it doesn't dump into over drive between 45-55 causing it to bog down! One word...YES!
Last edited by 00 T/A Ron Burgondy; 06-18-2012 at 01:21 PM.