Hey guys, little update here. Still having the issue but the truck has been sent back to the mechanic.
Compression is all good. Around 150 psi on 6 cylinders with two others down around 130-135. All seems to be good there. Is getting good spark and also fuel as well. There is noticeable...
Hook up a fuel pressure gauge and report back:
A. Key on, engine off: pressure? 58/60psi
B. Same as above after 5, 15 minutes? 58/60psi
C. Engine running: pressure? Never got truck running but cranking psi still held around 58/60
Also, I didn’t think fuel injected engines could flood.
The truck had a new style spider for about 5-6 years that worked fine. During a maintenance stay at a shop last year that unit was replaced. I assume a new fuel pressure regulator would have come with the new unit?
I tried again. Will have to get it towed home as it’s sitting on the street at my gf house.
Still same issues. Cranks, then tries to go only to stutter and buck real hard before the starter seems to lose engagement and spin freely (as in the first video). Does shudder roughly a few times as...
I'm having an intermittent crank-no start on my truck. This seemed to develop over time when the truck would crank slowly almost as if the battery was dead. One evening the truck died for good and couldn't be jumped so in went a new battery. This did not solve the problem. A few days later the...
Just stumbling on this thread because I'm having the same problem with a very intermittent Crank/No Start. Only thing is just about every component in the ignition/timing apparatus has been replaced. It does exhibit sputtering and even some smoke as though it's trying to run but almost as though...
Fresh rebuilt NP246. After switching to 4Hi and hearing a ping or pop from the case, it is 'stuck' in 4Hi an will not return to 2WD or 4Lo. New switch was installed along with new encoder motor at the time of install. Usually ran it in 4Hi for a little bit every week to move things around - but...
Hey guys. Solved this one. Looks like it was a blown ENG-I fuse. Consulted the manual and wiring schematic led me to the fuse box under the hood. Sure enough it was popped. Replaced and everything is back to normal.
Hey guys about a week ago I got the truck stuck pretty deep in mud. After being pulled out and getting back home, the truck has started to do some weird things and have new issues.
1. P0102 MAF Voltage/Signal Low - Upon datalogging, it seems that the PCM is reading no output from the MAF. The...
Just a quick update. This seems to have been fixed with a new thermostat. Operating temps were very low and preventing the truck from fully warming up.
I drove the truck today around town and tried to produce various effects at load while monitoring fuel trims. At 75mph/2400-2500 rpm sustained, the stft was great (1-3%). Ltft was not so great however (12-18%). That said I had zero misfires while sustaining speed and only inducing light load to...
Hey guys, I am trying to troubleshoot an apparent misfire on cylinder #5 on my 99 2 door Tahoe. The problem only occurs under load, and after the truck has warmed up. It has had the newer style MPI spider installed for almost 5 years now, and the shop near me thinks it's a bad injector. My...
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