Need help ASAP Please!!!! Have to drive to work tomorrow!!!!!
04-07-2009, 08:10 PM
#31
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Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
I don't think your issue is the pump. As a test, when it's running clamp off the return line. Turn it off and let it sit for a couple of beers, leaving the clamp in place. Try to start it. If it starts, the clamp prevented the fuel pressure loss caused by, I deduce, a defective fuel pressure regulator. As stated earlier I am not familiar with this engine, but am going on my experience with Chrysler 2.2/2.5 FI and Turbo engines which should be similar in theory. If it is the reg. it may be cheaper/easier to find a different throttle body assy. if it includes the reg. like a mopar F.I. TB does. Understand my rambling?
04-07-2009, 09:34 PM
#32
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Year: 1988
Model: Cherokee
Engine: 2.5
Hell yah Blue you make sense Homie....I will try it first, and I am a big turbo fan myself, I have a 91 AWD Turbo Talon a few pics before new motor went it and heres my Jeep BTW:
I love me my AMC's
I love me my AMC's
04-07-2009, 09:43 PM
#33
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Year: 2004
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Nice looking Jeep! You ever see this car? http://www.turbododge.com/forums/f11...dsm-video.html
Last edited by ol"blue; 04-07-2009 at 09:56 PM.
04-07-2009, 09:46 PM
#34
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That's a bad ****! I'm not up to speed on this computer, I'm still learning at 54.
Last edited by ol"blue; 04-07-2009 at 09:49 PM.
04-07-2009, 10:23 PM
#35
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Year: 1988
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with that kind of power at the wheels, he should be faster, but then again its a stock block and crank, either way VERY IMPRESSIVE!!!! My props
04-07-2009, 11:22 PM
#36
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Year: 1987
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Engine: 4.0
umm.
three things.
1. that pump is NOT likely to fit in the tank properly or without modification to the sending unit. plus if it's an in-line pump, you can't double pumps by adding it in-line (the in-tank pump will restrict the flow, cancelling out the in-line pump), and you can't put an in-line pump inside a tank, for risk of setting fire to the vehicle
2. TOO MUCH PSI will screw up your system. sure the regulator will regulate the pressure down...but a renault/bendix 2.5 liter only runs 20PSI at most. IIRC it's between 13 and 20 PSI or something like that. so, if your pump is rated higher than that, screw the idea.
3. just because you can supply power to it and make it whirr and "pump" doesn't mean that it's good and will output high enough pressure.
replace the parts with the proper parts, or don't due it at all...rednecking will cause more problems than it has a chance of fixing.
three things.
1. that pump is NOT likely to fit in the tank properly or without modification to the sending unit. plus if it's an in-line pump, you can't double pumps by adding it in-line (the in-tank pump will restrict the flow, cancelling out the in-line pump), and you can't put an in-line pump inside a tank, for risk of setting fire to the vehicle
2. TOO MUCH PSI will screw up your system. sure the regulator will regulate the pressure down...but a renault/bendix 2.5 liter only runs 20PSI at most. IIRC it's between 13 and 20 PSI or something like that. so, if your pump is rated higher than that, screw the idea.
3. just because you can supply power to it and make it whirr and "pump" doesn't mean that it's good and will output high enough pressure.
replace the parts with the proper parts, or don't due it at all...rednecking will cause more problems than it has a chance of fixing.
04-08-2009, 10:08 AM
#37
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Year: 1988
Model: Cherokee
Engine: 2.5
umm.
three things.
1. that pump is NOT likely to fit in the tank properly or without modification to the sending unit. plus if it's an in-line pump, you can't double pumps by adding it in-line (the in-tank pump will restrict the flow, cancelling out the in-line pump), and you can't put an in-line pump inside a tank, for risk of setting fire to the vehicle
2. TOO MUCH PSI will screw up your system. sure the regulator will regulate the pressure down...but a renault/bendix 2.5 liter only runs 20PSI at most. IIRC it's between 13 and 20 PSI or something like that. so, if your pump is rated higher than that, screw the idea.
3. just because you can supply power to it and make it whirr and "pump" doesn't mean that it's good and will output high enough pressure.
replace the parts with the proper parts, or don't due it at all...rednecking will cause more problems than it has a chance of fixing.
three things.
1. that pump is NOT likely to fit in the tank properly or without modification to the sending unit. plus if it's an in-line pump, you can't double pumps by adding it in-line (the in-tank pump will restrict the flow, cancelling out the in-line pump), and you can't put an in-line pump inside a tank, for risk of setting fire to the vehicle
2. TOO MUCH PSI will screw up your system. sure the regulator will regulate the pressure down...but a renault/bendix 2.5 liter only runs 20PSI at most. IIRC it's between 13 and 20 PSI or something like that. so, if your pump is rated higher than that, screw the idea.
3. just because you can supply power to it and make it whirr and "pump" doesn't mean that it's good and will output high enough pressure.
replace the parts with the proper parts, or don't due it at all...rednecking will cause more problems than it has a chance of fixing.
Cheers
04-08-2009, 10:21 AM
#39
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Year: 1988
Model: Cherokee
Engine: 2.5
I havent done it yet, Im lazy today and still in bed......But if it is the pump, no one makes a AFPR for the 2.5 only the 4.0 (For adding bigger pumps BTW 
)
SO...If I do it I have to find a way to add one in if it needs it, but like I said it will only make it runn richer thats all.....But If the pump is it, I will go buy a new pump, this is just my "free" way of checking it
)SO...If I do it I have to find a way to add one in if it needs it, but like I said it will only make it runn richer thats all.....But If the pump is it, I will go buy a new pump, this is just my "free" way of checking it
04-08-2009, 10:22 AM
#40
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i will let you know how it goes.....Im getting up here in a few\
Your the man though Blue....That pinching off the line was the best idea I have heard all week about this problem, thats what I am doing first
Your the man though Blue....That pinching off the line was the best idea I have heard all week about this problem, thats what I am doing first
04-08-2009, 11:06 AM
#41
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Year: 1988
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Alrighty......
Went outside, tried to start it, and nothing, sprayed the good Ol startin fluid down in there and BAM! we got fire, let it run for a couple seconds, pinched the line like blue said and shut it off, found a small leak from the main line that goes in the TB, no biggie.....let it sit for a few, then un did the clamp and started up, real rough though.......SO i tinkered around a bit and it starts now, with no problem, you just have to give it some gas a little, but you always had to do that before....SO with that being said, I say its the pump acting iratic...If there was a hole in the diaphram of the FPR it would happen all the time you would think, So I am gonna change the pump and go from there any other ideas??????
Went outside, tried to start it, and nothing, sprayed the good Ol startin fluid down in there and BAM! we got fire, let it run for a couple seconds, pinched the line like blue said and shut it off, found a small leak from the main line that goes in the TB, no biggie.....let it sit for a few, then un did the clamp and started up, real rough though.......SO i tinkered around a bit and it starts now, with no problem, you just have to give it some gas a little, but you always had to do that before....SO with that being said, I say its the pump acting iratic...If there was a hole in the diaphram of the FPR it would happen all the time you would think, So I am gonna change the pump and go from there any other ideas??????
04-08-2009, 04:29 PM
#42
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FIXED!
Droped the tank(I know it can be done with tank installed, but It's just as easy to drop it in my eyes) Changed the pump, installed my DSM pump with some awesome fab work via Stainless safety wire, the Dip **** who owned the Xj before me had a drywall screw going thru the rear cargo area into the tank...that was fun, fixed that hole, installed the tank again, hooked everything up, and bam half a key turn and we have life again, MUCH BETTER THROTTLE RESPONSE BTW! Revs up way faster and smoother. Took it on a long test drive, on road, off road, mud everything i could find to jurk and bump the hell out of the tank and no issuses or problems, get it home, turn it off, turn it back on and BAM we got life again, it turns over so much easier now, and no gas pumping needed.....
Thanks everyone for the help
Droped the tank(I know it can be done with tank installed, but It's just as easy to drop it in my eyes) Changed the pump, installed my DSM pump with some awesome fab work via Stainless safety wire, the Dip **** who owned the Xj before me had a drywall screw going thru the rear cargo area into the tank...that was fun, fixed that hole, installed the tank again, hooked everything up, and bam half a key turn and we have life again, MUCH BETTER THROTTLE RESPONSE BTW! Revs up way faster and smoother. Took it on a long test drive, on road, off road, mud everything i could find to jurk and bump the hell out of the tank and no issuses or problems, get it home, turn it off, turn it back on and BAM we got life again, it turns over so much easier now, and no gas pumping needed.....
Thanks everyone for the help
04-08-2009, 04:45 PM
#43
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Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
There you go. My guess was wrong. Oh well, I had never dealt with that system before, and was going on my past experiences with Mopar FWD 4-cyl.'s. Glad you have it running. I guess I owe you a beer!
