Arizona Duffer Posted February 10, 2015 Posted February 10, 2015 Although I will first be changing out the fuel filter, the fuel pump on my 1990 4.0 Comanche appears to be the culprit for a slow start (have to pump the gas pedal numerous times...I've replaced the obvious electrical componets). Fortunately I have service records back to the Comanche's purchase...the fuel pump has never been changed out (107,000 plus miles). At my local auto parts stores, I find a range of fuel pumps available, from a Denso brand at $103, to other brands up to $325. Thatsa big range! I hear Denso is a respected name. Butttt, what advice on fuel pump selection do those of you who've "been there, done that" have? Can't see spending more than I need to. Thanks in advance.
Dillithium Posted February 10, 2015 Posted February 10, 2015 www.Rockauto.com Plenty of choice, I prefer Bosch but Carter is also good. Much cheaper than parts stores.
Incommando Posted February 10, 2015 Posted February 10, 2015 www.Rockauto.com Plenty of choice, I prefer Bosch but Carter is also good. Much cheaper than parts stores. Much. I went with Bosch. Easy install and it is working fine
teamsmith Posted February 10, 2015 Posted February 10, 2015 Don't buy Airtex. I bought the cheapest one at Advanced Auto ($70) and it is very loud. It drones and drones. When I initially complained about it on here others shared that it was not uncommon with this model. I wish I had spent a little more money (or about the same from Rockauto) on the Airtex. If you are shopping Advanced Auto, use coupon code TRT30 for 30% off, which brings the bosch pump down to the ~$75. You have to use it on their website but you can select in store pick up. If I can't wait on RockAuto, I'll use the coupon for AA. Easier to return as well. I would recommend also purchasing the little tin lock ring that holds the pump to the tank. I bent mine up pretty good getting it out and had to run to the store again.
Knucklehead97 Posted February 10, 2015 Posted February 10, 2015 I bought Bosch. Rockauto no longer carries them. It dissapeared when I went to purchase. But Ebay has the same kit for 67$. Or they did last month when I changed mine. I also have a write up in the DIY section explaining how to make the Bosch fit. Best of luck :D
cruiser54 Posted February 13, 2015 Posted February 13, 2015 Bosch is best. I have a question for you though. You're in Arizona and you appear to have MY Comanche!! Or it's twin. If that's the only issue you have is starting, it's probably not the fuel pump. A faulty fuel pump would rear it's ugly head not on starting, but when there is a high demand for fuel. See if this helps. Before starting, turn the key to On and then Off after 10 seconds. Do it again. Then see how it starts without touching the gas pedal.
Arizona Duffer Posted February 14, 2015 Author Posted February 14, 2015 Heya, Cruiser. You're in AZ? I'm in Green Valley. Not an hour ago, I gave a copy of your tips to a friend at Merle's Auto Parts, who gets a number of Jeep customers. I really appreciate your work. Have had the Comanche since 2005, went to NC for it, at which time the odometer was ballpark 65,000. Sadly now 110,000. I have most records back to purchase, which took place in Virginia. Navy guy. I bought from his son. Thanks re Bosch suggestion. I stumbled into the approach you recommended...still need one to two pumps of the pedal, unlike earlier days, but much better. I am a week away from going full tilt on your tips. Notice when full tank, starts easier. Have not seen this pump; could crud in tank be clogging a pickup tube of some sort? Did buy new filter, not yet installed. Until this year, Comanche sat in garage for seven summer months while we went home to Alaska. Always put stabilizer in tank. Great off-road country here; hope you're enjoying the same.
cruiser54 Posted February 14, 2015 Posted February 14, 2015 I wonder if the hose from the pump to the flange of the fuel module isn't split/soggy/collapsed/all mush. Good possibility. I'm in Prescott. I haven't looked yet to see where you're at.
az comanches Posted February 15, 2015 Posted February 15, 2015 Green Valley is down in Pima county between Tuscon and Nogales.
cruiser54 Posted February 15, 2015 Posted February 15, 2015 Green Valley is down in Pima county between Tuscon and Nogales. Way down south away from me!!
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