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#1
10-02-2008, 11:29 PM
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01 Tahoe won't start
I have a 01 LT 5.3 that wont start. I was driving home today and it all of the sudden I had a lack of power on the hi-way. I made it home and realized it was some sort of miss. I changed the fuel filter, spark plugs, and cleaned out the throttle body. I took it for a test drive and it died on me. Now it wont start. The motor turns over, sputters every now and then and the rest of the time it doesnt try to fire. I'm stumped. Any help would be greatly appreciated.
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#2
10-03-2008, 12:44 AM
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Re: 01 Tahoe won't start
Have you checked fuel pressure?
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Check six.
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#3
10-03-2008, 12:45 AM
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Re: 01 Tahoe won't start
Either you're not getting fuel or you're not getting spark. My instincts tell me you have coil-on-plugs instead of a single ignition coil, so a failure of any one wouldn't cause the engine to stop altogether. But if not, check your coil for the correct primary and secondary resistance. (I looked it up...you have coil-on-plugs)
Next I'd check the fuel pump and fuel regulator for the proper pressure. Hook up a fuel pressure gauge and turn the ignition to ON. You should hear the fuel pump whir for a few seconds then stop. If not, the fuel pump is bad. Next read the fuel pressure. I cannot find the actual pressure rqquirement, but I would guess it to be around 65 psi. Lower than that means a bad fuel pressure regulator. No sound at all means either the fuel pump is bad or a fuse has blown. Hope this helps!
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Current Garage: 2009 Honda CR-V EX 2006 Mazda 3i 2004 Chevrolet Silverado 2500HD 2003 GMC Envoy XL 2000 Honda ST1100 2000 Pontiac Sunfire Vehicle History: 2003 Pontiac Vibe AWD - 1999 Acura Integra GS - 2004 4.7L Dakota Quad Cab 4x4 - 1996 GMC Jimmy 4wd - 1995 Chevrolet C2500 - 1992 Toyota Camry LE 2.2L - 1992 Chevrolet S10 Ext. Cab 4.3L - 1995 Honda ST1100 - 1980 Yamaha XS400 - 1980 Mercury Bobcat.
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#4
10-03-2008, 07:53 PM
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Re: 01 Tahoe won't start
Quote:
If you keep the fuel tank below 1/4 tank and the vehicle has over 160,ooomi it is very possible that the fuel pump is bad... If it still don't start check for spark at a plug ...If no spark could be crank/cam position sensor or some other componets this would require the DTC to be pullled from the computer.. a bad fuel pump will show no codes...
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#5
10-04-2008, 09:19 AM
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Re: 01 Tahoe won't start
It turned out to be the fuel pump. I was still getting some flow from the pump so it would spit and cough every now and then. I replaced the FPR and nothing. So I bit the bullet and dropped the tank. 256.99 for the pump, kinda steep, but what are you going to do? Thanks for the help.
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#6
10-04-2008, 11:09 AM
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Re: 01 Tahoe won't start
Quote:
keep more than 1/4 tank of fuel at all times and replace fuel filter every 30-40,ooomi ..this should reduce fuel pump problems...
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