So I got a chance to work on the truck, soldered on the map harness from the donor engine- Map signal was better but would still spike and still getting alot of KR and surging while accelerating....
Type: Posts; User: Zeke1989
So I got a chance to work on the truck, soldered on the map harness from the donor engine- Map signal was better but would still spike and still getting alot of KR and surging while accelerating....
10-4 I?ll check that next. I?m thinking you?re right because sometimes the map is super smooth then from nowhere it goes sky high.
Ok, changed MAP sensor to the 2014- seemed like it fixed the surge for a little while, (engine was still cold but in closed loop) then it came back. Did seem better though. Sometimes map is super...
BTW on the reduced power log something in the fuel pump calibrations (low pressure pump) from the 18 cal was throwing it into reduced engine power and not allowing closed loop.
Ok, that makes sense. No intake manifold runner controllers on either engine. I tried swapping everything but the trans files over- still surges and now the map sensor read in the 300- 400 range most...
I will try that, so copy the open VE table data from the 2018 into closed VE table on my 14? Why open VE data in a closed VE table? Not saying you're wrong by any means, just asking because of my...
Do you by chance have a copy of stock/factory tune for LV1? I have installed one in a 14 Sierra in place of LV3 and I am having issues with it jumped under acceleration. Need to compare to my LV3...
No problem, yeah as far as I can know the only differences are LV1= no dod, no oil pump control (oil pump 100% all the time, no wiring to pump, injectors are different part # and map is different...
Map sensors are different part #s will swap them after work tomorrow.
Thanks! Both of my engines have variable cam timing, I just disabled it to see if that would correct the issue. I found a file for a 2018, but it?s still LV3 instead of LV1. Swapped all the engine...
I will try that tomorrow, Thank you! I want to say I already checked the map are the same but I will double check. What else could cause the map to act like that?
I have a 2014 GMC Sierra with the 4.3 (I know this is the V8 section but figured this section gets more traffic than the V6= quicker/better response) anyways, Recently the factory engine started...