clayton006 Posted February 23, 2007 Report Share Posted February 23, 2007 Hello all. It's been a while. Life has caught up to me and I haven't been able to post for a while. Well, I had to have another shop install my opti because my newer TA got totaled and I didn't have anything else to drive. Well the shop installed the opti and new plug wires, and as it turns out they said when the car warmed up it started to backfire. Well the car never did that before the install! So they find out that the #2 and #4 injector wires were backwards (now I didn't do that, I couldn't drive the car) So now it's not backfiring at all, but the idle is rough, but that car revvs up smoothly. Could they have fouled those two plugs? does my PCM need to re-learn the fuel curves? I don't have the car back because they want to clean it out, but I think that more work needs to be done here. I've done the opti before myself (many times trust me) but they told me that my timing cover was cracked and I had a few bad seals. They said that oil took out my opti (which looking under the car I can believe). If I do get the car back soon and I can at least drive it, could someone else me troubleshoot? I have a garage, but it's not very big to work on a car in.. Quote Link to comment Share on other sites More sharing options...
clayton006 Posted February 23, 2007 Author Report Share Posted February 23, 2007 New update, The repair shop called me and said he's been through 3 opti's and said that each one burns up and gives him the low resolution pulse failure. He's using the Napa remaned opti's and he's going to try one from the dealer. When you get that low res pulse failure that's indicative of opti failure right? That's at least what I thought. Could there be anything else causing this failure? He's also getting a new cable from the dealership from the PCM to the opti. I gave him a new one from a GM dealership, but he's also going to try that. Any ideas? Quote Link to comment Share on other sites More sharing options...
AJ Posted February 23, 2007 Report Share Posted February 23, 2007 wait and see what happens when he gets one on there from a dealer. NAPA ones are junk, i went threw the same problem on one with a NAPA unit. Quote Link to comment Share on other sites More sharing options...
clayton006 Posted February 23, 2007 Author Report Share Posted February 23, 2007 That was my feeling. And those napa wires they put on are coming off and my MSD's are going on when I get it back. Quote Link to comment Share on other sites More sharing options...
Guest Mushijobah Posted February 23, 2007 Report Share Posted February 23, 2007 Fuck opti's soooooooo hard....worst idea ever. Quote Link to comment Share on other sites More sharing options...
clayton006 Posted February 23, 2007 Author Report Share Posted February 23, 2007 Yeah I'd like to have a DELTEC (spelling?) installed on it, but I just need it running for right now. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 23, 2007 Report Share Posted February 23, 2007 Delco Opti Is The Only Way To Go. Quote Link to comment Share on other sites More sharing options...
clayton006 Posted February 23, 2007 Author Report Share Posted February 23, 2007 When i did the work last time that's what I used. If it wasn't for the oil leak it would have kept going. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 24, 2007 Report Share Posted February 24, 2007 they had a issue with them collecting moisture back in the late 90s, but they have updated the venting on them since then.(back then they had us filling the vent with silicone) Quote Link to comment Share on other sites More sharing options...
clayton006 Posted February 27, 2007 Author Report Share Posted February 27, 2007 New Update They have switched out the PCM, a new opti, and the cable that goes from the opti to the computer..... no luck.... It will maybe run for about 2 - 3 minutes and give the low res pulse failure and die.... Any other suggestions? Quote Link to comment Share on other sites More sharing options...
AJ Posted February 27, 2007 Report Share Posted February 27, 2007 they replaced the short jumper harness from the engine wire harness to the dist. but did they check the wire harness from the ingition system test connector to the PCM? the low res code your talking about is code 16, it can be set if the opti was installed wrong making the timing off and the PCM sees a low res. signal. you can also try an ingition control module (next to coil) the flow chart i'm reading says something about that as well. i don't know what shop you took it too but i don't think i would go there again, sounds like they have Dee Dee Dee working on your car because it doesn't take almost a week to diag. a car. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 27, 2007 Report Share Posted February 27, 2007 first link in my sig...we can fixx it if they cant. Quote Link to comment Share on other sites More sharing options...
clayton006 Posted February 27, 2007 Author Report Share Posted February 27, 2007 Well they argue that it can't be the ignition module because the car is getting spark.... hmm.... They aren't charging me anymore until they actually know what the problem is. I would be more than willing to take it somewhere else, but I don't want to throw away 1400 dollars. Quote Link to comment Share on other sites More sharing options...
clayton006 Posted March 23, 2007 Author Report Share Posted March 23, 2007 Well the last update: I got my car back today. It's idle-ing a lot better than it did prior to all of this mess which is nice. They found out that there was a bad ground going to my ignition module / coil (I forget which one even though they are both right there) and it was causing all sorts of crap to happen. I'm just glad to have the car back. Now only if I can find a local speed shop that's trustworthy and does great work.... Quote Link to comment Share on other sites More sharing options...
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