5.9L Engine Club
#292
After replacing my cap, rotor, plugs, wires, put in a 180 tstat, and put in the new hughes plenum plate I am still only getting 8.5-9 mpg.... Is there a way to reset my PCM? I have tried unplugging the neg land positive line going to the battery and that did nothing.
Also I have very little heat for some reason, and it only get hotter when I am driving, when I stop it cools off... Could this be because of the new t stat?
Also I have very little heat for some reason, and it only get hotter when I am driving, when I stop it cools off... Could this be because of the new t stat?
#293
#297
My guess would be that the computer has not learn this extremely priced mod yet. But it runs fine? Shifts, runs, doesnt burn oil, runs lean or rich? It is runs fine I would not worry about it id give it a few? Does anyone know more than me about this thats creeping on this thread to help us out?
#299
I am running the 91 octane performance program... Well my truck also today when I was on my way to work stuck at a stop light, the RPM's dropped to around 300-400 and my dash lights went dim and came back ect... When the light turned green I gunned it and the truck really bogged down, but around 2k to came back to life and has been fine ever since....
Anybody have any thoughts on the heat problem?
Anybody have any thoughts on the heat problem?
#300
If you've had to refill your overflow, you may not have all the air out of your system yet. Your issue is a symptom of that too. Try running the truck about a half hour or so nose up on a steep incline to try and bleed the system.
Oh...to this correctly you will have to start cold with your radiator cap off...
Last edited by dsertdog56; 12-03-2009 at 11:49 AM.