1999 Chevy Tahoe Crank, no start.

DOLEARY6666

MEMBER
1999 CHEVROLET TAHOE
V8
2WD
AUTOMATIC
198,600 MILES

When the weather is wet (snow or rain) my truck will crank, but not start. I have fuel, fuel pressure, and spark. I did have check engine messages that I have two bad O2 sensors. Could this be the problem? If so, any direction on how to put them in?

It smells like it is flooded, too much fuel.
Thanks,
Dan

5 Replies

JDL

MECHANIC
16,098 POSTS

Hi, thanks for the donation. If the 02 sensors are the problem, the code should point, which 02. As far as removing the sensor, it is straight forward. Take the electrical connector loose, unscrew the old sensor, screw the new one in, reconnect connector. I'd also want to use a fuel pressure gage on the fuel system, check for proper pressure and that it doesn't drop like a rock, when everything is turned off.

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Saturday, February 27th, 2010 AT 2:41 PM

DOLEARY6666

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6 POSTS

I don't know where the O2 sensor is located? Any direction?
Thanks,
Dan

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Saturday, February 27th, 2010 AT 3:46 PM

JDL

MECHANIC
16,098 POSTS

Oops, sorry about that.

Picture of up-stream oxygen sensor.

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Sunday, February 28th, 2010 AT 8:47 AM

DOLEARY6666

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6 POSTS

Thank you, that helps out a lot.
Can the O2 sensor cause my problem though? I have never heard of an O2 sensor causing a crank no start problem.
I don't want to replace them and that not be the main problem, thay cost 85.00 a pieces times 4.

Thanks again,
Dan

Great web site, I fill refer you to friends!

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Sunday, February 28th, 2010 AT 11:39 AM

JDL