91z28 super ram 355 with cam and headers. Will not hold idle. I even have to give it a little trottle to start and restart after it dies. I reset the iac and has a new iac and tps. Any ideas of what to do ?

 

Did you set minimum idle speed?

 

Went ahead and reset it again. Still doesn't want to idle and dies when I put it in gear

 

Verify timing is correct.

 

Verify that you do not have any vacuum leaks, super ram's are notorious for sealing issues..

 

No vacuum leaks that I can find and still will only start if I give it a lot of gas from the pedal. Timing was reset and tps voltages and position match on the scanner. Idk what next ?

 

Was it running well, and just started giving problems, or have you recently installed something, and the problem began after that?

 

Nothing has been changed recently. Just been sitting because I cannot figure out the issue. Also dies when you put it in gear

 

I read in another post that the ecm requires a input when shifting into gear so it might be one of the problems. I do have a megashifter on my 700r4

 

I verified the ecm is getting an input when put in gear but still stalls.

 

I reset the IAC again and still doesn't want to start without giving it alot of gas

 

Are you re-adjusting the TPS to specs after you've set the IAC minimum air?

 

Have you checked fuel pressure? Changed fuel filter?

 

My tps is non adjustable so I can't move it. Fuel filter is pretty new and fuel pressure is good

 

Well got desperate and swapped out the ecm but same issue. Redownloaded my bin file to my ostrich and still nothing. Going to try my factory memcal and prom tomarrow. Running out of ideas

 

Factory memcal and prom did nothing. Any ideas ?

 

EST connected?(If your using it)

 

EST is connected

 

So just a recap. Stalls in when going into gear and will not start without laying into the throttle.

So far I have reset iac multiple times.
Reset timing.
Swapped in three different ecms
reuploaded my bin to my ostrich
swapped out tps twice.
Checked fuel pressure and flow
gotta be something stupid here

 

Maybe get a smoke blower to test for leaks?

 

Yup, sounds like you have a vac leak somewhere.

 

Ok found a few smoke machines on ebay. Might pick one up this week

 

Picked up a smoke machine and I do have a leak at the rear passanger runner. Trying to decide if I even want to put the superram back on.

 

Well the leak came from a small port on the back of the intake. It's capped and still having the same problem's also was back firing when i tried to move it

 

Plugged in laptop and ran it while data logging. Map sensor looked ok. tps was good iac was good and it was adjusting the timing. Fuel pressure was good as well Idk whats going on I was hoping the map sensor crapped out on me but it checked out ok. What should I check next ?