- #24 of 93
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Re: Does my 99 Jimmy need its fuel pump replaced? [jpilchesky]
by jlflemmons
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Jan 25, 2007 (8:41 pm)
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Replying to: jpilchesky (Jan 19, 2007 9:26 am)
I know this will sound crazy, but give the gas tank a swift kick. I learned this trick from a wrecker driver who said the common failure in the fuel pump was that it would stop at a "dead spot" in the windings. Gave the Yukon a kick in the tank when this same thing happened and bingo, fired right up. Took it to the dealer (warranty) and one of the mechanics admitted that they did the same thing when one came in on the hook and they didn't want to physically push it into the shop for the pump replacement.
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- #25 of 93
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Re: Does my 99 Jimmy need its fuel pump replaced? [jpilchesky]
by countryboy276
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Feb 24, 2007 (1:21 pm)
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Replying to: jpilchesky (Jan 19, 2007 9:26 am)
Hello,
I am having similar problem with my 98 4x4 Jimmy did you figure out what the problem was?
Thanks
David
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- #26 of 93
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Re: Does my 99 Jimmy need its fuel pump replaced? [countryboy276]
by jpilchesky
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Feb 24, 2007 (3:16 pm)
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Replying to: countryboy276 (Feb 24, 2007 1:21 pm)
It actually worked for about two weeks, and then shut down again. We've been in snow for that time, so I didn't get to take the advice of repairdog and change the fuel filter. It's sitting in a parking lot, and as soon as I can tow it home (snow is everywhere making it difficult), I'll change the filter and let you know. Sorry can't be of more help right now. It cranks over, and when I put a shot of gas in the carb, it fires right up.
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- #27 of 93
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Re: Does my 99 Jimmy need its fuel pump replaced? [jpilchesky]
by countryboy276
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Feb 24, 2007 (6:11 pm)
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Replying to: jpilchesky (Feb 24, 2007 3:16 pm)
I am in a similar situation with the snow..At least my truck is the house. I changed my fuel filter too and my truck ran good for about a month, then started the same thing again. What diagnostic codes have you received? I get a PO147 which is HO2S Heather circuit bank1, sensor 3. HO2S is Heated Oxygen Sensor. According to some info I found..When the ignition is turned on, battery voltage is supplied to the HO2S heater to provide for faster sensor warm-up,thus allowing sensor to become active in a shorter period of time. When the temperature warms up more I am going to trouble shoot HO2S heater sensor and probably install new O2 sensors since my truck has 160,000 miles on it and they haven't never been changed. Keep in touch since it seems we have about the same problem. We might be able to help each other out by sharing info.
David
countryboy276 insightbb.com
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- #29 of 93
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fuel pump regulator question on 91-93 Jimmy
by chrissanders
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Apr 24, 2007 (8:56 pm)
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I currently own a 1991 Jimmy, but it has many problems. The jimmy i have now is 2 door, dont know if that matters, I just bought a 1993 4 door Jimmy and the only thing wrong with it is the fuel pump regulator. I was wondering if I could take the fuel pump regulator off of my 91 jimmy and put it on the 1993 jimmy I just bought. If you know the answer please email me at chrissanders91aol.com
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- #30 of 93
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Re: fuel pump regulator question on 91-93 Jimmy [chrissanders]
by repairdog
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Apr 25, 2007 (3:11 am)
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Replying to: chrissanders (Apr 24, 2007 8:56 pm)
Look both years up on the online auto sites and see if the same. I would go new as its the labor thats the pain.
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- #31 of 93
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99 Jimmy fuel problem
by aaron13
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May 18, 2007 (9:51 pm)
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Can someone give me some advise on my v6 4.3 Jimmy? my truck will run for a while about 10 or 12 miles I will stop the engine for a few minutes and try to start it again and will not start. Pump will not have electrical power (no noise on the pump). after a few minutes the truck will start again and can hear the pump running again. I have put a new gasoline pump, a new gas filter, a new fuel pump Relay. What else can I try? any sensors any where?
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- #32 of 93
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Re: 99 Jimmy fuel problem [aaron13]
by jim102
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Jun 06, 2007 (7:56 am)
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Replying to: aaron13 (May 18, 2007 9:51 pm)
Hi, Just wondering if you have figured out what the problem is with your Jimmy. I have been having similar problems with mine for the past year and a half. Replaced the fuel pump, and wires. It will sometimes start, sometimes not. There has already been a hole cut in the back of truck so top of pump is exposed where previous owner obviously had problems. I can open the back tap on pump a few times and usually it will start. Sometimes the pump will shut off when I am just driving down the road. I can't seem to find any explanation for why it is just shutting off. Any advice?
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- #33 of 93
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Re: 99 Jimmy fuel problem [jim102]
by repairdog
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Jun 07, 2007 (6:09 am)
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Replying to: jim102 (Jun 06, 2007 7:56 am)
Airtex makes a replacement connector for the top of the pump that may solve that. Must also have a good ground. Hope the pump put in was a Delco cause many others fail in a year so do a pressure test key on engine off and then running. Min of 60 psi KOEO and then 54 or so running.
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