Uh oh. Cranks but won’t start. When it does start it died at idle. 92 SHO MTX

[Zpak]

Was your temperature gauge showing incorrectly too? Or fans failing to go? Or did it just not start. My gauges and fans seems to be fine. Also the issue is causing mine to die. I will try pulling that if I can figure out where it is.


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Gauge and fans were good. The gauge at least in my truck is a separate sending unit not associated with the temp sensor. I could get it to start hot…sometimes, by keeping the peddle to the floor while I cranked. After it did run, however poorly, it was obvious it was running pig rich.

 

[loganbro28]

Is it possible it could have been low coolant?? I added coolant to my reservoir last night because it was pretty low…

I ran tests this morning warmed it up a ton, ran both tests multiple times. I pulled a 411 idle higher than expected but I think it was because I hit the gas at the wrong time.

Kept firing up and running smooth even after letting the block sit and the heat settling in (which was usually when it died before)

So either a one off and it will stop workin again or it just needed more coolant. Lol we’ll see


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[loganbro28]

Ok so it wasn’t the coolant (i was feeling hopeful) i drove my buddy home warmed it up. Stalled it at his house. Wouldn’t start. Fiddled with the temp gauge harness, ICRM, DIS then it fired up.

Almost got home and it died and the engine light came on (not because I stalled it this time). Messed with the connections again and got it to fire. Made it home and let it idle. Didn’t die.

So I ran and got my scanner and ran multiple tests again. Lo and behold I now have the codes 211 and 542. Its worth mentioned the engine was very warm but stopped stalling and fired up 4 separate times when I was home.

So looks like the 211 PIP code could confirm that I should investigate the Crankshaft position sensor?

I cant do any work on it for another 8 days so I’m going to try and make a gameplan for when my weekend rolls around.


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[luigisho]

So looks like the 211 PIP code could confirm that I should investigate the Crankshaft position sensor?

I cant do any work on it for another 8 days so I’m going to try and make a gameplan for when my weekend rolls around.


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Yes. That is the highest probability item to address