rkcstr
10+ Year Contributor
- 59
- 6
- Jun 27, 2009
-
Jacksonville,
Florida
So, giving a little update.
Drove a long trip and ended up having some strange issues where the car would stall and die on the highway. It would cool off for 15-20 min., start up again, then a minute later same thing. Talked to a friend who suggested coilpacks. I limped to a nearby Autozone, who happened to have them at $100 per piece and I needed two... doh!
Anyway, car drove again after, but not as well. It started almost stalling at idle and was really rough. I checked the O2 sensor voltage and was now at 5V! Well, I decided to get a new primary O2, which I bought an NGK. Replaced that and now it idles fine again, just still has what seems a few misses. I cleaned the plugs after changing coils and rechecked them again, which they look fine. I'm also getting a new MAF as I had this "missing" issue before too, so I'll see if that fixes the idle and sort of poor performance I've been getting (doesn't really pull as hard as I feel it should at 20psi). It also seemed to pull harder before all this coilpack crap, so it makes me wonder if the new coils have anything to do with it...
Also, I managed to get the LC-1 working. Seems the connector for the O2 sensor isn't holding tight, so when it disconnects it corrupts the unit. I got it to sit in the cabin, so it vibrates less and it appears to be working. So, I got the AFRs to match to the ECU pretty close. I had the >100 load set to 10.5, and at WOT it would fluctuate between 10.2 and 10.7. Also, when I let off the throttle, the wideband tends to go a little crazy and the AFRs go over 20 (I've seen like 50-80 appear quickly??) and fluctuate pretty wildly until I touch the throttle a little, then it goes back to 13-15. Again, I'm wondering if the MAF is throwing things off.
After I get the new MAF I'm going to try to confirm the scaling and check the trims to hopefully get everything calibrated finally.
Drove a long trip and ended up having some strange issues where the car would stall and die on the highway. It would cool off for 15-20 min., start up again, then a minute later same thing. Talked to a friend who suggested coilpacks. I limped to a nearby Autozone, who happened to have them at $100 per piece and I needed two... doh!
Anyway, car drove again after, but not as well. It started almost stalling at idle and was really rough. I checked the O2 sensor voltage and was now at 5V! Well, I decided to get a new primary O2, which I bought an NGK. Replaced that and now it idles fine again, just still has what seems a few misses. I cleaned the plugs after changing coils and rechecked them again, which they look fine. I'm also getting a new MAF as I had this "missing" issue before too, so I'll see if that fixes the idle and sort of poor performance I've been getting (doesn't really pull as hard as I feel it should at 20psi). It also seemed to pull harder before all this coilpack crap, so it makes me wonder if the new coils have anything to do with it...
Also, I managed to get the LC-1 working. Seems the connector for the O2 sensor isn't holding tight, so when it disconnects it corrupts the unit. I got it to sit in the cabin, so it vibrates less and it appears to be working. So, I got the AFRs to match to the ECU pretty close. I had the >100 load set to 10.5, and at WOT it would fluctuate between 10.2 and 10.7. Also, when I let off the throttle, the wideband tends to go a little crazy and the AFRs go over 20 (I've seen like 50-80 appear quickly??) and fluctuate pretty wildly until I touch the throttle a little, then it goes back to 13-15. Again, I'm wondering if the MAF is throwing things off.
After I get the new MAF I'm going to try to confirm the scaling and check the trims to hopefully get everything calibrated finally.