Since i know nothing of this trucks history is there a chance that this engine could have come from a car with a roller cam and is why it is running lean?
Since i know nothing of this trucks history is there a chance that this engine could have come from a car with a roller cam and is why it is running lean?
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
I looked it doesnt have the 24 to 28 pin adapter, I haven't looked into getting the adapter and new chips/ burner. I was hoping to get this issue corrected or identified before i went and changed other stuff.
Last edited by mmigacz; 01-07-2017 at 01:17 AM.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
Maybe I missed it but does your engine have any exhaust modifications? A non-heated O2 sensor tends to do poorly if it's not installed right in the exhaust manifold.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
If it were a vacuum leak wouldnt the IAC have lower than normal counts to compensate for the leak or a high idle if IAC cant compensate enough? Exhaust leak is a possibility i tried to get it to seal to the manifold hard to tell and without sliding under there with a bottle of soap and water if its a little one. Injectors is a possibility that I have considered just havent check yet as the truck is getting a shift kit installed for towing after I get these issues resolved.
I leave my lid off (since I'm swapping chips a lot). However, you can space the lid up with weather stripping to make clearance, if you are concerned with dust getting in. Also, that picture shows them using a spacer before the G2 adapter. You can omit the spacer and solder the G2 adapter directly to the circuit board. If you read the tutorial on moates they mention this.
Last edited by mmigacz; 01-10-2017 at 03:50 PM.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
sorry for all the questions, but are these chips reflashable or are they a one and done deal?
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
Picked up an ASDU chip from pic a part yard, now shows 142 itn and 170 blm at idle using same adx and xdf, in the process i think I knocked a vacuum line for hvac off as I cant get air to blow from defrost or hot air.
sounds like you need to get that vacuum leak found. Somebody suggested getting a heated o2 sensor, did you try that too? Post the data log, I'm curious if the O2 swings are still on the lean side. Is egr connected?
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
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