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Jeep Grand Cherokee Maintenance and Repair
5134 messages, Last post on May 20, 2013 at 1:06 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.What is this discussion about? Jeep Grand Cherokee, Jeep Cherokee, SUV
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#5020 of 5134 fuel pump by linr
Jan 04, 2012 (8:13 am)
heres my problem. i have a 1995 jeep grand cherokee 4.0, 6cyl. about 5 months ago i put a bottle of injector cleaner in the gas tank , of course to clean out the injectors. vech. was running fine up till that point. a week or two later, when i would get down on the gas to go around someone, the jeep would surge back and fourth, like it wasn't getting any gas. so i figuered it was the filter. upon changing it, when i disconnected the line from the gas tank side of the filter, it looked like muddy watter runninig out that side. after changing it. the jeep ran good for a week. and then the same thing. so i changed it again. ran good for a month. the jeep ran good untill i got down on it to pass someone. so i changed it again. a month ago it started it again so i changed it for the third time. also i put in new plugs, distributer cap & roter. it runs fine uptill i have to get down on the gas then the surgeing starts. the i have to back off. could it be that this injector cleaner stuff loosened up so much gunk in the gas tank that now i might need a new fuel punp? any replys would help, thanks.
#5021 of 5134 Re: fuel pump [linr] by rwengr
Jan 04, 2012 (9:00 am)
Replying to: linr (Jan 04, 2012 8:13 am)
You will have to pull the tank and inspect it. It's a 2 man job and you need a ventilated area. I can almost guarantee you will have gunk and who know's where it is lodged. I have replaced several oil pans on older vehicles and I always find a lot of gunk on the pickup screen which I clean.
Ask your auto parts what you should use to clean it. Maybe a spray can of carburetor cleaner?
I have a 97 Jeep 4.0L I6, 186,000 and my injectors and fuel pump are OK. I have never put injector cleaner in it.
There might be a product that can clean the injectors which connects to the fuel rail
#5022 of 5134 Re: fuel pump [linr] by mikeyp53
Jan 04, 2012 (12:11 pm)
Replying to: linr (Jan 04, 2012 8:13 am)
You have done something with good intentions that was bad for your car. ! Varnish (the code name for gunk) was on the fuel lines and tank surfaces. The cleaner in the product you used loosened years of accumulation all at once gumming up the car fuel system. You may decide to keep the filter change process going until it heals itself or have the tank cleaned and purged.
#5023 of 5134 Re: power window issues [perry101] by rees21
Jan 04, 2012 (3:19 pm)
Replying to: perry101 (Aug 23, 2010 1:39 pm)
I HAVE THE SAME PROBLEM BUT ITS THE LEFT REAR WINDOW I JUST WONT TO KNOW IF U FIND OUT THE PROBLEM IF SO PLEASE EMAIL BACK
#5024 of 5134 Re: fuel pump [linr] by loosenut
Jan 04, 2012 (4:01 pm)
Replying to: linr (Jan 04, 2012 8:13 am)
check fuel line pressure..mebee th fuel pump's going out.. ..or the screen at the bottom of the pump got clogged when all that junk broke free..? thats why i wont run cheap gas-even tho my-98 5.2 REALLY likes gas!!.. my best reading on th trip comp has been 17=and averages 15mpg..
with gas averaging 4-headed for 5 buks per, the 10,20 cents per gal diffrence aint worth the worry...
I buy th marathon premium--they put the injector cleaner in at the fuel depot !
#5025 of 5134 Re: fuel pump [loosenut] by linr
Jan 05, 2012 (8:37 am)
Replying to: loosenut (Jan 04, 2012 4:01 pm)
thank you for your reply. could you tell me how to check the fuel pressure, and what i will need to do this.
- rwengr (Jan 05, 2012 12:40 pm)
- loosenut (Jan 06, 2012 4:24 pm)
Replies to this message:
#5027 of 5134 Re: fuel pump [linr] by rwengr
Jan 05, 2012 (12:40 pm)
Replying to: linr (Jan 05, 2012 8:37 am)
You will need a fuel pressure gauge with a line and fitting that is compatible with the test fitting on the fuel rail. The fitting should look like the fitting on an old bicycle tire. Get the Haynes manual. Check out HarborFreight.com for a good price or try your local auto parts retailer.
#5028 of 5134 Re: fuel pump [linr] by loosenut
Jan 06, 2012 (4:24 pm)
Replying to: linr (Jan 05, 2012 8:37 am)
rwenger's right...a gauge hooked to th fuel rail.. also-with all th water contaminating your fuel,is someone perhaps putting something in your tank?? maybe a locking cap might be a solution?? one other thought.. check the evaporation can looks like a coffe can up near the radatior on most could be your jeep might've gone swimming..and still has water in the line that vents the tank?
- linr (Jan 07, 2012 8:36 am)
Replies to this message:
#5029 of 5134 Re: fuel pump [loosenut] by linr
Jan 07, 2012 (8:36 am)
Replying to: loosenut (Jan 06, 2012 4:24 pm)
thanks for your reply. i will check into that also. but you know she ran fine up untill i put the little bottle of injection cleaner into the gas tank. my thoughts are that all that gunk in the tank came loose. and thats when my problems started.
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