***Weird Miss....PLEASE HELP!***
Try it this time by taking just the pos wire off and tapping it against the pos battery terminal port.
After resetting the PCM it still misses alittle on every cylinder, its very random misfire. This was kinda wierd, the Map sensor voltage was at or above 2v at idle. Should it be there? Also, when i pulled the map sensor, there was a part of the rubber grommet that had a little tear, at the bottom, but had actually cut through the whole rubber grommet. Could taht be it? Replace grommet, or whole sensor?
I do have boltons, and cam, FYI.
Devin
I do have boltons, and cam, FYI.
Devin
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Devin
And yes, the CSP sensor can fail over time, while its failing, sometimes it works great and sometimes you get those symptoms I listed above.
You can change it out in 5 minutes after you lift the car up on ramps or a lift. Drop the starter and its right there.
You can get one at Advance Auto or PepBoys to try, if it doesn't help you can clean it up and bring it back for a refund.
Also, if it is a bad CSP sensor, it WILL NOT neccassarily give you an SES light and a cheap scanner like they have at Advance or PepBoys might not show the code. When mine went, it took the expensive OBDII scanner that the dealerships use to show it.
Last edited by LS6427; Jan 7, 2009 at 10:04 AM.
11 Second Club
Joined: Jul 2008
Posts: 415
Likes: 0
From: tulsa ok
just because the plugs are new it dont mean they cant be cracked. I work at a part store and the plugs are thrown around in baskets and in shiiping when stocking.it happens more than you might think. I also had a friend who had the same problem with a misfire and it just randomly went away still dont know why.
You meant the front O2's, right? The rear ones mean nothing. The front ones can cause the car to miss, though mine showed no misses when I switched mine from right to left bank on accident. I went out and got new Bosch 13111's so I wouldn't have to run the extensions, and put them on the right side (duh). Fixed my random misses.
Did you delete the EGR (if you have it)and Air system,unplug pump get rid of all those vaccume lines behind the intake? I had the same problem and it went away only when I did that.
I had a miss at high rpm's I couldn't track down after I installed my headers. I spent hours trying to find what was causing it. It turned out to be the gap on the plugs. I had gaped them to the factory .60 but after taking them out and re-gaping them to .35 NO miss fire. Try re-gaping them to .35 and see if that helps.
