Is there anyway you can monitor the fuel pressure? When was the fuel filter last changed?
GM 3.4l V6 stalled today!! No codes
- Thread starter JohnMack
- Start date
This is a 2005 model, so , what, 21 years old. Not only do I NOT know what fuel system it had, probably throttle body at best, I'm not to sure how much pressure that system produces.
TBI was done across the GM line by 1996. The 2005 LA1 3400 has SFI.
Now you got me thinking, are there any OBD-II TBI systems? I can't think of one.
None that I know of, no.
During 94 and especially 95, GM was transitioning from OBD1 to the 96 OBD2 requirement. There was a weird OBD1.5 period for those years, OBD1 ECM’s with 16 pin D-style OBD2 ports. Things like crank sensors and other now common components being added to powertrains but not everything else. Made for a very weird/annoying home mechanic experience trying to get the right code reader that would read the system.
Yep, I had a 1995 Neon that had an OBD 2 port but wasn't fully supported. Of course 1996 got full support.
Had no trouble reading codes and even a bunch of live data with a Bosch OBD1+2 scanner when I had a 95 Chevy K1500. I was very impressed with how well it worked. Then there was my mom's 95 Accord... it had an OBD2 port... but nothing would communicate with it. 95 was a weird year!
I have an old AutoXray scanner that has a rectangular GM 12 pin OBD1 cable, a GM 94-95 16 pin D-port OBD1.5 cable and the standard/universal 96+ OBD2 cable. The port shape is the same on those, but the data pins are different.
It’s ironic that you mentioned your 95 K1500 as I was thinking of that exact truck earlier. There used to be a Chevy truck forum back in the day, fullsizechevy.com that focused primarily on the GMT400 trucks of the time. Members with 95’s were always finding out new ways that their powertrain was different from both the 94 and older and 96 and newer. IIRC even the 4L60E was unique for that year, something about the TCC lockup method. As you said, 95 was a very weird year for the automotive industry.
It was a great truck. Sold it to an ex many years ago and he recently sold it to get a Camry Hybrid. Except for like half a dozen reman garbage steering boxes and a bit of an oil leak it never gave either of us any trouble. I think when he sold it it has like 290K miles on it. I have indeed heard that many 1995 GMT400 parts are very hard to get but… they’re so darn good that you don’t need the parts if they don’t break!!
Appreciate all the help and advice with this issue. Just an update , Ive put 40 Miles on since it shutdown and havent had the issue again.
Will keep you posted as Im sure its going to happen again.
Will keep you posted as Im sure its going to happen again.
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Does your 4.3L have a distributor? Take off the cap and inspect the rotor.
