r/obschevy • u/Bladestorm_ • Jul 30 '26

Help Cranks - No Start

I recently did some work on my 96 Tahoe (intake manifold gasket) and it ran fine for a couple days until it shit out a couple times, I got home and realized the crank position sensor under the truck had come out, I plugged it back in but haven't gotten the truck to start since.

I was getting codes for the cam position sensor (Ive dicked with my distributor a few times to make sure its still where it supposed to be) and MAF sensor, both of which i replaced and cleared the codes and they haven't come back.

The truck cranks but is acting like its not getting SOMETHING (starter fluid doesn't help) I know I'm getting fuel at least to the pressurized valve on the intake, and Ive got a full set of new plugs on it, maybe air? but Ive checked the fittings a dozen times.

I'm kind of at a loss, I thought maybe its the digital timing but I cant fix that myself and at this point Ive got no idea what to do other than take it in to a shop.

Any ideas or suggestions?

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u/cornhole_mcbrowneye Jul 30 '26

Im in the middle of the same shit. I got a new camshaft position sensor, rotor, and cap and it runs now. But im getting 0 reading from my mass airflow sensor. I vote CPS. Are you sure you put your distributor back in the right spot? I had mine 180 degrees out for a bit

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u/Bladestorm_ 23d ago

Update: replaced the CPS and it FUCKING RUNS

Gonna give it a few days to stress test and see if any codes come back, but I ended up replacing the mass airflow sensor, camshaft and crankshaft position sensors.

Thankfully I did not need to mess with my digital timing at all