Bowtie70SS Posted November 27, 2007 Report Share Posted November 27, 2007 He is coming up north this weekend so I can fix the knock sensor, run a scan or 2 and flash the PCM. IF a crack develops in the honeycomb material it rattles around and grinds itself into powder and clogs the cat. You guys already know this I'm sure and I agree we need to figure out why but without the original owner???? I was planning on running a cylinder balance test via HPtuners. That should tell us what's up, that along with the scan. I just happen to have a couple of spare knock sensors. Dave Quote Link to comment Share on other sites More sharing options...
YenkoChevelle69 Posted November 27, 2007 Author Report Share Posted November 27, 2007 I have no intentions of blowing off your advice guys. We are gonna give it a good examination to make sure everything is on the up and up. Dave is the man! He's gonna get me up to speed on this SSS Stuff. Quote Link to comment Share on other sites More sharing options...
YenkoChevelle69 Posted December 2, 2007 Author Report Share Posted December 2, 2007 Update: First of all, Bowtie70SS is the best friend anyone could ever have. He's a fantastic person who'd go out of his way for anybody. WOW, just wow. So, Dave and I tackled this intake today (I won't lie, Dave did everything pretty much) The intake came off to reveal this The sensor and harness looked like this. The rear knock sensor is the one on the left, and the front one is the one on the right. Needless to say, the rear one looked like it went down with the titanic!!! Quote Link to comment Share on other sites More sharing options...
YenkoChevelle69 Posted December 2, 2007 Author Report Share Posted December 2, 2007 All clean! http://img.photobucket.com/albums/v625/Yen...69/HPIM0524.jpg http://img.photobucket.com/albums/v625/Yen...69/HPIM0523.jpg http://img.photobucket.com/albums/v625/Yen...69/HPIM0522.jpg http://img.photobucket.com/albums/v625/Yen...69/HPIM0526.jpg http://img.photobucket.com/albums/v625/Yen...69/HPIM0525.jpg Here is the old rear knock sensor, and the new one. http://img.photobucket.com/albums/v625/Yen...69/HPIM0527.jpg Same back RTV around the little black covers, put the intake back on and now we're good as new! Under the intake, we found sand, mulch and grime! I'll never know how it got there, but dear lord! The truck picked up a few ponies with the knock sensor replaced. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted December 2, 2007 Report Share Posted December 2, 2007 OMG its as if the truck was driven around for 6 months with the air cleaner off. Glad to hear its running better now Quote Link to comment Share on other sites More sharing options...
Dylan06SS Posted December 2, 2007 Report Share Posted December 2, 2007 OMG its as if the truck was driven around for 6 months with the air cleaner off. Thats about the worst I've ever seen.... that would had to have been almost intentional. Quote Link to comment Share on other sites More sharing options...
Krambo Posted December 2, 2007 Report Share Posted December 2, 2007 Yea, figured it was bad. Great job with the pictures! Too many posts end with just some words and a thumbs up. Pictures tell the entire story. BTW, your intake isn't out of the ordinary. MANY have pulled their intakes to find what you found. It only takes one mouse to find your warm engine bay and it is all over. Your heads look dirty as well. Time for a sea foam treatment. Quote Link to comment Share on other sites More sharing options...
Bowtie70SS Posted December 3, 2007 Report Share Posted December 3, 2007 (edited) I had asked Shay to bring me some mulch since he was coming up so I could fix his truck. He didn't want to take a chance crossing state lines with a load of bootleg mulch so he smuggled it in under the intake. Seriously though I was very suprised to see that crap under there. The foam end pieces were still in place on the intake. Good thing I had a couple of spare knock sensors from my original engine. Edited December 3, 2007 by Bowtie70SS (see edit history) Quote Link to comment Share on other sites More sharing options...
454MATT Posted December 4, 2007 Report Share Posted December 4, 2007 Thanx for posting up all this good info guys, my truck suddenly adopted these symptoms yesterday and left me stranded on the side of the highway in -20 Cel. Mine would barely run and would not move under its own power. I ended up flat decking it to the GM dealer to thaw out and diagnose the problem. My truck was also on empty when it happened so i thought maybe water/ice contamination or in tank pump failure? But now i'm thinking a bad cat/cats. They are original and have been throwing cat codes for a couple of weeks now. I'm now praying that i didnt F-up my engine, I'm dirt poor after dumping five grand into a tranny last month.. The worst part is i was coming back with parts to fix my whole exhaust system when this happened. Matt Quote Link to comment Share on other sites More sharing options...
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