You are here: Forums SUVs GMC Jimmy GMC Jimmy Fuel System

GMC Jimmy Fuel System

93 messages,  Last post on Aug 17, 2009 at 8:23 AM

You are in the GMC Jimmy Forum. Your Hosts are steve_ & tidester

What is this discussion about? GMC Jimmy, GMC, Fuel System, Truck

Messages Page 8 of 10 1 ... 4 5 6 7 8 9 10 Prev Next Last

Go To Msg # Search This Discussion

#66 of 93 Re: miss when driving [captainkirk56] by captainkirk56 Nov 17, 2008 (7:43 am)
Replying to: captainkirk56 (Nov 17, 2008 7:41 am) forgot to say....occasional this problem shows up from a dead stop..pulling away..but not consistant...sometimes ok...sometimes not????
#67 of 93 99 GMC Jimmy hesitation problem by nljewell Dec 02, 2008 (6:08 am)
My Jimmy is hesitating when first taking off, only when engine is cold. And occasionally when at a steady speed, the rpm's will surge up alittle. I have changed plugs and wires, put new fuel filter on, replaced egr valve, added some BG44K, and am waiting on a new cap and rotor in the mail. I am out of ideas of what is wrong. Any suggestions? Replies to this message: nljewell (Dec 03, 2008 1:24 pm) tech1help (Dec 03, 2008 3:03 pm) nljewell (Dec 04, 2008 4:50 am) nljewell (Dec 04, 2008 9:41 am) nljewell (Dec 08, 2008 4:55 am)
#68 of 93 Re: 99 GMC Jimmy hesitation problem [nljewell] by nljewell Dec 03, 2008 (1:24 pm)
Replying to: nljewell (Dec 02, 2008 6:08 am) Well I put on my new cap and rotor and that didn't do squat. I took it in for a diag. test this morning and the "mechanic" said he didn't know since there was no check engine light on, so he couldn't check the codes. My next steps are to change coil, temperature sending unit, and change trans. filter. Please reply if you have any ideas.
#69 of 93 Re: 99 GMC Jimmy hesitation problem [nljewell] by tech1help Dec 03, 2008 (3:03 pm)
Replying to: nljewell (Dec 02, 2008 6:08 am) when was the last time you checked your cat converter?sounds more like you engine may not be exhausting correctly. if you are driving and it feels like the engine feels like it is cutting in and out, especially when first started or sometimes wnhe you hit throttle, or going up hill. I would definetly be looking at the cat converter, or the fuel pressure regulator. Replies to this message: nljewell (Dec 04, 2008 4:50 am) nljewell (Dec 04, 2008 9:41 am) nljewell (Dec 08, 2008 4:55 am)
#70 of 93 Re: 99 GMC Jimmy hesitation problem [tech1help] by nljewell Dec 04, 2008 (4:50 am)
Replying to: tech1help (Dec 03, 2008 3:03 pm) Thank you tech1help, I will definitely give it a shot.
#71 of 93 Re: 99 GMC Jimmy hesitation problem [tech1help] by nljewell Dec 04, 2008 (9:41 am)
Replying to: tech1help (Dec 03, 2008 3:03 pm) Cat. converter tested good. Fuel pressure was at 55/58. Mechanic suggested to spray some carb cleaner around plenum when engine is cold, if idle goes up then that seal might be bad. He said when engine gets warmed up that seal will expand and the hesitation would stop, only causing hesitation when engine is cold. Replies to this message: nljewell (Dec 08, 2008 4:55 am)
#72 of 93 99 jimmy starting problems by poorjimmy Dec 04, 2008 (4:03 pm)
well one day shut it off, went for lunch, then it wouldn't start, poured gas in throttle body, it would run till gas ran out, so I disconnected the inlet to the fuel filter and tried starting, but no fuel came out... went for some supper called tow truck, while waiting with the inlet line still disconnected, i tried starting and gas started pouring out?, so i connected fuel line to filter and it started no problem drove it home.   Next day started no problem, drove around town, came home shut it off, and wouldn't restart, this time poured gas in throttle body and still wouldn't even start this time, "scratching head"   check all fuses, replaced relay, disconnected fuel line and re tried, no fuel coming out... Left for a few days, went out tried to start started right up, tried 3 times then would start with or with gas in throttle body, i have ordered a new pump, and have changed fuel filter, just not sure why it all works one day then nothing, what really gets me is it will crank over but seems to be getting no spark and no fuel.   Any help would sure be nice.   thanks
#73 of 93 Re: 99 GMC Jimmy hesitation problem [nljewell] by nljewell Dec 08, 2008 (4:55 am)
Replying to: nljewell (Dec 04, 2008 9:41 am) I sprayed carb cleaner around plenum and nothing happened. When I was at work this weekend I parked inside, when I went to leave after it sitting for 13 hr. it took right off with no hesitation????
#74 of 93 Vortex 4.3L by shootert Dec 26, 2008 (8:35 pm)
I and a Son own 4 S10 Blazers an 1 Jimmy. The Jimmy an 2 Blazers have Vortex Engs. in them. The fuel lines inside the air induction intake or what ever have some kind of plastic type fuel lines going to the spider injector an a return line. These lines keep splitting , an the leaking fuel goes directly onto the tops of the intake valves resulting in flooding.  Please what are these lines made of,so we might purchase it in a bulk roll. The Dealer gets a $100.00 per line with end fittings. The line itself is approximently eight inches long !  Can you help us ? Ron N Texas
#75 of 93 2001 GMC Jimmy Running Erratic by jstew41 Dec 30, 2008 (11:41 am)
Hi. I have a 2001 GMC Jimmy with a 4.3l vortec. It shuts down all the time while driving down the road but usually only happens when its sittin around a Half tank of fuel. Now it just started doing this when I first start it in the mornings its very hard to start but it idles fine, when I hit the gas it starts mising and the RPMS are very erratic. It runs fine with a full tank. Anyone have any ideas. Any help would be greatly appreciated. Replies to this message: singe (Feb 02, 2009 6:32 pm)

Messages Page 8 of 10 1 ... 4 5 6 7 8 9 10 Prev Next Last

Go To Msg # Search This Discussion

You are here: Forums SUVs GMC Jimmy GMC Jimmy Fuel System