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Old 09-22-2010, 02:34 AM   #1
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Fuel Pump on its Last Leg?

Went to start my Jeep this morning after picking up my paycheck and it cranked longer than normal before spitting and sputtering and finally catching...didn't think much of it until I went to leave work tonight and it cranked over extra long until I was kind of like WTF and let off...it spit, sputtered and died. Cranked a little longer (by just a second or two) the next attempt but fired right up.

I'm thinking either anti-drainback valve or fuel pump...but if I remember correctly, anti-drainback valve is on the pump? How easy is this job, what's entailed exactly, and do you recommend a specific brand of pump if you believe a pump replacement is necessary? I'm figuring it went from not doing it to doing it twice in one day over a period of 24 hrs...so if the fuel pump is going bad, I'm assuming it's gonna give up the ghost pretty quickly.

Thoughts?

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Old 09-23-2010, 03:07 AM   #2
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Geeze...sometimes you guys suck... 36 views and no replies?

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Old 09-23-2010, 03:37 AM   #3
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Clueless bro, I just bought a 98 a month ago and I'm having problems with it turning over myself, I was thinking alternator but I'm so not a gearhead, good luck tho
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Old 09-23-2010, 08:32 AM   #4
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37 now
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Old 09-23-2010, 09:17 AM   #5
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Pricks... lol
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Old 09-23-2010, 10:19 AM   #6
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My 1998 is doing the same thing. I called pepboys they want 500$ for parts and labor becUse you have to drop the gas tank to do it.. something I've been doing instead of cranking it to start ( which just killed me) put it on to battery status n then turn it back to off back to battery three times let the fuel pump build up pressure then start it. It starts prefect for me if I do that. I fear letting it crank will cause it to get worse. Let me know if that works for you seems like 98s are faulty year minor problems and some major that people have in common.
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Old 09-23-2010, 10:49 AM   #7
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Ok, its rither your fuel pump, but most likely your fuel press regulator, either of these you will need to drop your tank to replace them. You can go to advance auto and they have a fuel pump assy or module, it comes with the pump, reg, strainer, and a new sending unit all for $225. My 97 is doing the same thing, and this is what I will be doing. If you don't trust the airtex brand, rockauto.com has a acdelco for I think was $256. Its a pretty straight forward job, done in less than 2 hrs, the hardest part is lowering the tank. Its all good, just a little bit of work.
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Old 09-26-2010, 11:16 PM   #8
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Okay...here's a lil more info on this problem before I go buying any parts.

The day I posted this, my Jeep frequently was having problems starting on the first try. That problem disappeared the following day and hasn't returned back since. However, there's another issue I didn't even think to mention that's been happening for a while and I'm sure it's related.

Whenever I start my Jeep in the morning...especially on a cooler morning, it'll usually fire right up and run fine for about 2-3 seconds and then suddenly it'll get real rough for 3-5 seconds before smoothing back out. Still a symptom of a fuel pressure regulator or is that a dead giveaway for something else?

Edit: This "new" problem has been occurring since last winter that I remember...it's only noticeable on the first cold start of the day.
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Old 09-27-2010, 12:01 AM   #9
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how high does the idle get when you first start running it? mine usually sits at about 800-1000 rpm for the first minute or so then drops down to where it should be. ive got no idea what the problem is but i figured id share to.
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Old 09-27-2010, 12:14 AM   #10
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Didja think to check the fuel filter? May be an easy fix....
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Old 09-27-2010, 12:20 AM   #11
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Quote:
Originally Posted by Got_Mud? View Post
Didja think to check the fuel filter? May be an easy fix....
Fuel filter is the "sock" on the fuel pump. Can't get to it unless you drop the tank or change the pump.

My '97 2.5 does the same thing, Sentenced. Starts, then drops hard and hesitates when you try to accelerate. Pump the skinny pedal a few times, and it seems to be ok. Mine only does it when it is cold too. I have 2 friends that are ex Chrysler-Jeep mech. Trying to get it in to them and get some leads on what it might be. If I find out this week, I will post.
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Old 09-27-2010, 12:22 AM   #12
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Quote:
Originally Posted by Got_Mud? View Post
Didja think to check the fuel filter? May be an easy fix....
Just have to drop that old tank to check is all...replace the pump while you are in there it comes with a new sock.
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Old 09-27-2010, 12:31 AM   #13
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Just make sure you drive the thing until it's near empty, the lighter the tank the easier it is to remove and reinstall. Make sure you soak the bolts on the skid with "PB Blaster" (can't get it up here so we use other stuff) a few days prior to dropping the tank. I't's not totally necessary but having a friend handy is a good idea so is a floor jack or two and don't for get to remove the screws from the gas filler, the ground wire and the cap before dropping the tank.
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Old 09-27-2010, 12:32 AM   #14
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Sorry-I gotta remember to stay in my own forum - All I gotta do it replace a little can under the rail..... Sorry to intrude...
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Old 09-27-2010, 12:35 AM   #15
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Sorry-I gotta remember to stay in my own forum - All I gotta do it replace a little can under the rail..... Sorry to intrude...
It's all good...I get confused sometimes...I have 2 square eyes in the garage along with the round eyes...no biggy
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Old 09-27-2010, 12:41 AM   #16
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LOL - I'm simple, so simple things gravitate towards me...

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