I have a 94 3500. I just bought the truck and put on new bosch injectors, new heath pmd, new heath turbomaster, new heath prom. The truck is running great but the check engine light is always on and I cant get the codes to flash, when I had them pulled last it was a cd 46 "MIL Fault", my service throttle soon light just came on, I know lift pump is running when truck is on. What do I need to look at?

 

APPS

 

Drive truck all day ran fine, after last stop drove to the house and flashed codes 46, 57, 62, and 39. Could this be the computer?

 

I really doubt that it is the computer generaly if the Veical is running then the computer is fine you neeed to list what all equipment the truck has type of trans I.E. manual/auto do you have security light on ect.ect the more info we have the easier it will be for us to get an idea whats going on with said truck.

 

94, 6.5, auto trans, 140000 miles, all stock except for: Heath pmd, Heath turbo master, Heath towing prom. I went through my grounds and I thought I did a good job but I'm going back to double check, no security light, the 46 has been on for 3 monthes the other stuff is recent. The tranny is 1 yr old.

 

Code 39 clutch input circut error
Code 62 engine oil high temp indicated
Code 57 boost control problem
Code 46 power steering switch circut fault (this is your code not the pass key fault)
I would unhook the batteries see which ones you get back
Do you manually shift the trans? like speed shifting(code 39)

 

No manual shifting, I reset the computer but I can't ever get codes to flash manually they just did on their own last night, where did you get that list? The list I looked at had 46 as a mil circuit fault. And as far as oil temp, the truck had sat for 3 hours before that popped up

 

codes sometimes will store before the SES light will come on
2008 Acura (MDX) Sensor Location