Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
SUVs GMC Jimmy 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
i know it's probably been beaten to death, but when a fuel pump is going,can it only show up at start up as if it'll run rough untils it seems as if once a few degrees of heat gets in the cylinders then it'll straighten out and run fine? no codes,100,000 miles new pump about 10,000 ago but is progressivly gett more noticeable,almost as if it takes time for fuel system to biuld pressure as its started to drive away then will accelerate normally.
|
|
|
Replying to: mtlwiz (Jun 26, 2007 10:11 am) |
|
| I have a 95 GMC Jimmy 4dr.2wd. I recently replaced the fuel pump, and noticed two valves on top of the gas tank. One of which had a small crack on the neck of tube which leads to what seems a vaccum or a canister of some type. Tried to purchase one at typical auto parts store and they didn't have it and didn't know what exaclty it was for. Do I have to dealer to get one, do I really need it? Can someone help me with this problem. | |
| have 94 jimmy problem misses at idle, backfire when revved up replaced timing chain and gears ,ign module,plugs,wires cap and rotor yes timing gears are set correctly has new fuel pump filter by prev owner oh yes also new coil jimmy has 174000 mi have run fuel inj cleaner in it the engine will rev with a lot of patience but has no power did check with timing light ok | |
| After replacing and testing alot of items . I finally replaced the fuel injector . Very expensive but fixed the problem. There is only one test to see if its working no way to check the nozzles. To see if they are clogged. Only a few minor bugs to work out so good luck out there. Got to luv bowties! | |
|
Replying to: pwardon (Dec 26, 2006 11:59 am) |
|
|
at the fuel pump at the tank unhook the wires and when i tested for voltage. one had voltage all the time i assume this is the gas gauge. because it was low voltage.then you will have two that is the ground. then the other one don,t have voltage on it with just the switch turned on. but as soon as you turn the switch on over as to start it it has voltage is this the way it is suppose to work |
|
|
Can anyone tell me where the fuel pump relay is located on my 97 GMC Jimmy 2WD??? I have tried my Chilton's book - the Chevy House--Autozone!! I need Help! THANK YOU
|
|
|
Replying to: mom23boys (Apr 09, 2008 5:32 am) After 1 month the fuel pump failed - no big deal, done this before with the in tank fuel pump on my 99 suburban. Replaced with a Airtex fuel pump from Oreilly Auto Parts and all was good.... For 5 days - broke down again. Checked the fuel pressure at the fuel rail and fuel squirted everywhere, so I THOUGHT I had fuel pressure... and the truck would run with starting fluid - SOOOO I went down the route of replacing the Fuel Injector Assemby (Spider). This did not fix it. Luckily, I bought a used working one on ebay for $40. Finally bought a fuel pressure gauge (hind-sight 20/20) and realized I had 12 psi. Replaced the Fuel Pump with a new one from Oreilly no questions asked. Getting very good at this at this point - Thought I was good to go - Bad pump I thought. Week later, after pumping gas, the truck would not start again. Fuel pump wiring harness? Don't think so since the Airtex came with a new one Clogged Fuel filter? will check, but doubt it. Already replaced on the first swap. Cough up the money for the AC Delco? Thinking this may be the fix. Hitting the truck to free up a stuck pump? Will try this tonight to see if it starts. Blowing out the fuel lines? Need to do this Here's my conclusions, based on everything I've gone through. 1. Check fuel pressure - Buy the $50 high pressure gauge kit - worth it! Just because you hear it whinning does not mean anything - You need at least 56 psi. 2. Be ultra careful with the plastic fuel connectors on the lines/pump 3. Be sure to keep your little fuel line plastic clippy things if you're returning your pump I'll update tomorrow after I troubleshoot this second failed fuel pump.
|
|
|
Replying to: gator14 (Sep 27, 2006 3:21 pm) |
|
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2001 GMC Jimmy
Browse by Board
Browse by Topic
Today's Chats
