99 tahoe 5.7 crank, no start

zoc19 · Jul 9, 2024

The Tahoe started one day and not the next, it has 50 psi or more of fuel pressure, we replaced crank sensor & distributor cap, checked plug wires and plugs, replaced the battery since it was weak to begin with, put more fuel in it in case the gauge wasn't reading correctly. Yesterday there was a crank shaft sensor code, i cleared it and it never came back, we replaced the sensor anyway just in case.

movietvet · Jul 9, 2024

Welcome to the forum from Oregon.

You checked fuel pressure. Do you have spark? You did not say. Is the fuel filter clogged?

zoc19 · Jul 9, 2024

We do have spark, fuel filter has not been checked but is on the list for tonight, acts like it wants to start but seems like it doesnt have enough power to turn over. We have a obd2 reader and also checked for transmission range sensor and every gear is in correct sequence

movietvet · Jul 9, 2024

"acts like it wants to start but seems like it doesnt have enough power to turn over"?

Are you saying it cranks slow? You said you replaced battery. Cranks fast/normal but does not fire off? Cranks slow like still has a battery problem? Catches during the cranking process?

zoc19 · Jul 9, 2024

Sorry didnt say that correctly, it still has a strong crank but is now starting to kill the new battery from trying to crank so much. This is my fiances truck, im just trying to help him figure it out.

movietvet · Jul 9, 2024

While it is rare, the fuel filter could be clogged enough to cause a fuel delivery problem. Was the ignition rotor changed when doing the distributor cap?

zoc19 · Jul 9, 2024

It was not, but was checked for corrosion and correct position for connection

movietvet · Jul 9, 2024

zoc19 said:
It was not, but was checked for corrosion and correct position for connection

The rotor can look ok but have a pinhole burned in it causing spark problems.

99 tahoe 5.7 crank, no start

zoc19

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movietvet

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zoc19

Newbie

movietvet

Supporting Member

zoc19

Newbie

movietvet

Supporting Member

zoc19

Newbie

movietvet

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