1998 Chevy Tahoe V8 Four Wheel Drive Automatic 140000 miles
1998 Chevy Tahoe " sometimes" will not start. Plenty of juice and cranking power. Always fires right up first thing int he morning, and if it has been sitting for a while. However, if you start and stop it several times over a period of a couple of hours (stop at store, bank, post office, etc) and the last such stop is for a short period (a few minutes, up to about 30 or so) then more often than not on about the 4th or 5th such stop it will NOT restart. It sounds like it just is getting no fuel at all when that happens. If you then literally let it sit for 5 full minutes, it will usually start BUT it (A) has a strong, distinct sort of odor (somewhat like you would have experienced in the old days ater restarted a flooded engine), and (B) will not smoothly idle (you have to keep the throttle down a bit to keep it from dying out). However, if it last for a minute or so, then it runs fine until the problem happens again. Any idea what the heck this could be caused by?
1998 Chevrolet Tahoe V8
p.S. I have taken it to my mechanic twice for other issues and had him search for this while there, but he has not been able to find anything. It does not ping any problem!
Ok we need to know what it is doing at the time of the problem. We need to know if it is missing spark or fuel. With out this info we are just guessing so can you get me this info? Thanks and get back to me with what is happening.
December, 1, 2008 AT 11:44 AM
Spark is fine
pressures are fine, so getting fuel as well
December, 1, 2008 AT 10:35 PM
You may have fuel pressure but that doesn't mean you are getting fuel. You have to be missing one or the other otherwise it would start and run fine unless you are getting to much fuel pressure or the injectors are leaking then it would flood, so if you step on the gas pedal with the key on (when it is having its starting issues) will it start then? What is the fuel pressure on start up and what is it when running? Have you checked the fuel pressure when it won't start?