engine cutting out

mrmohawk · 01-29-2007, 01:44 PM

just replaced a clogged fuel filter in my 97 jimmy. but it seems to still have a problem getting fuel. engine starts and idles fine. runs good for a couple mins.
but when i give her a little throttle it cuts out/ spits and sputters like the filter is clogged againcheck engine light just started flashing and stayed on seems to be getting progressively worse, fuel pump is only about a year old but it is an aftermarket and has a differant whine to it now
any suggestions?

disphit · 01-29-2007, 01:53 PM

fuel pump.

mrmohawk · 01-31-2007, 07:06 PM

Quote: Originally Posted by disphit

fuel pump.

i hope thats the problem or else my wallets gonna be empty for nothing

gchemist · 01-31-2007, 08:18 PM

What is the fuel pressure?

( o )( o ) · 01-31-2007, 08:35 PM

I sure hope your tank is empty before you have to drop it to replace the pump.

mrmohawk · 01-31-2007, 11:52 PM

havnt checked the pressure yet but i got the tools to handle the 3/4 tank i got

horsepwraddict · 01-31-2007, 11:59 PM

get the code read and tell us what it is. While it very well may be the pump....it may not be.

mrmohawk · 02-02-2007, 12:11 AM

its got a couple codes
maf low input
map high circuit
02 low voltage pending
random missfire

then i cleared them and took her down the road and a mile later i got a misfire in cyl. 3

mrmohawk · 02-02-2007, 01:47 PM

just tried to pull the #3 plug or the a--hole plug as i like to call it and i broke the plug right in half and my tools r stuck now guess ill have to wait for the weekend

horsepwraddict · 02-02-2007, 02:39 PM

doesn't sound like a fuel pump. Any one of those things could be the problem, however im leaning towards the MAP sensor only because a fualty MAF and O2 sensor aren't going to affect engine vacuum. This doesn' t mean that it couldn't be more than one thing. Start testing things.

pull the map sensor off and use a DVOM and vacuum pump to check the map sensor.

It may be running fine for several minutes while its on warm up. O2 sensors aren't functioning while the engine is cold as the computer runs in closed loop, im not positive but ithink the maf may work the same way DONT TAKE MY WORD FOR IT, someone please correct me if im wrong, last thing i want is to spread incorrect info, its been a while and this stuff isn't real fresh in my brain.

mrmohawk · 02-07-2007, 10:13 PM

ok replaced map sensor and plugs. cap wires rotor all that crap is fairly new even changed the ecm cause i had one laying around but i can barely make it out of the driveway now and it threw a code for a map high voltage and low voltage 02, fuel pump is sounding weird id like to check the pressure maybe i gonna have to break down and buy a gauge

Dan · 02-07-2007, 10:18 PM

check your wire harness coming from the firewall on the right side i thought i had a fuel pump problem but it was a bad harness the wires were corroded i had to rewire and it fixed it

mrmohawk · 02-10-2007, 12:39 PM

ok fixed that problem i put a new fuel pump in it and it drove excellent but then i was in the next county left my girlfriends house and truck just died fuel pump doesnt turn on now no prime nothing

Ecartman84 · 02-11-2007, 12:58 PM

Quote: Originally Posted by mrmohawk

ok fixed that problem i put a new fuel pump in it and it drove excellent but then i was in the next county left my girlfriends house and truck just died fuel pump doesnt turn on now no prime nothing

Sounds like you may have a loose connection somewhere

01-29-2007, 01:44 PM	#1
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	engine cutting out just replaced a clogged fuel filter in my 97 jimmy. but it seems to still have a problem getting fuel. engine starts and idles fine. runs good for a couple mins. but when i give her a little throttle it cuts out/ spits and sputters like the filter is clogged againcheck engine light just started flashing and stayed on seems to be getting progressively worse, fuel pump is only about a year old but it is an aftermarket and has a differant whine to it now any suggestions?
	[Reply w/Quote]

01-29-2007, 01:53 PM	#2
disphit First Team Age: 27 Join Date: Dec 2005 Posts: 269 Location: User is: OffLine	Re: engine cutting out fuel pump.
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01-31-2007, 07:06 PM	#3
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: engine cutting out Quote: Originally Posted by disphit fuel pump. i hope thats the problem or else my wallets gonna be empty for nothing
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01-31-2007, 08:18 PM	#4
gchemist Registered User Join Date: May 2006 Posts: 356 Location: Austin User is: OffLine	Re: engine cutting out What is the fuel pressure?
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01-31-2007, 08:35 PM	#5
( o )( o ) Registered User Age: 30 Join Date: Oct 2005 Posts: 196 Location: Oakdale, CA User is: OffLine	Re: engine cutting out I sure hope your tank is empty before you have to drop it to replace the pump.
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01-31-2007, 11:52 PM	#6
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: engine cutting out havnt checked the pressure yet but i got the tools to handle the 3/4 tank i got
	[Reply w/Quote]

01-31-2007, 11:59 PM	#7
horsepwraddict s10 newb Join Date: Oct 2005 Posts: 671 Location: Princeton MA User is: OffLine	Re: engine cutting out get the code read and tell us what it is. While it very well may be the pump....it may not be.
	[Reply w/Quote]

02-02-2007, 12:11 AM	#8
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: engine cutting out its got a couple codes maf low input map high circuit 02 low voltage pending random missfire then i cleared them and took her down the road and a mile later i got a misfire in cyl. 3
	[Reply w/Quote]

02-02-2007, 01:47 PM	#9
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: engine cutting out just tried to pull the #3 plug or the a--hole plug as i like to call it and i broke the plug right in half and my tools r stuck now guess ill have to wait for the weekend
	[Reply w/Quote]

02-02-2007, 02:39 PM	#10
horsepwraddict s10 newb Join Date: Oct 2005 Posts: 671 Location: Princeton MA User is: OffLine	Re: engine cutting out doesn't sound like a fuel pump. Any one of those things could be the problem, however im leaning towards the MAP sensor only because a fualty MAF and O2 sensor aren't going to affect engine vacuum. This doesn' t mean that it couldn't be more than one thing. Start testing things. pull the map sensor off and use a DVOM and vacuum pump to check the map sensor. It may be running fine for several minutes while its on warm up. O2 sensors aren't functioning while the engine is cold as the computer runs in closed loop, im not positive but ithink the maf may work the same way DONT TAKE MY WORD FOR IT, someone please correct me if im wrong, last thing i want is to spread incorrect info, its been a while and this stuff isn't real fresh in my brain.
	[Reply w/Quote]

02-07-2007, 10:13 PM	#11
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: engine cutting out ok replaced map sensor and plugs. cap wires rotor all that crap is fairly new even changed the ecm cause i had one laying around but i can barely make it out of the driveway now and it threw a code for a map high voltage and low voltage 02, fuel pump is sounding weird id like to check the pressure maybe i gonna have to break down and buy a gauge Last edited by mrmohawk : 02-07-2007 at 10:15 PM.
	[Reply w/Quote]

02-07-2007, 10:18 PM	#12
Dan noma94 Age: 33 Join Date: Feb 2004 Posts: 277 Location: Detroit User is: OffLine	Re: engine cutting out check your wire harness coming from the firewall on the right side i thought i had a fuel pump problem but it was a bad harness the wires were corroded i had to rewire and it fixed it
	[Reply w/Quote]

02-10-2007, 12:39 PM	#13
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: engine cutting out ok fixed that problem i put a new fuel pump in it and it drove excellent but then i was in the next county left my girlfriends house and truck just died fuel pump doesnt turn on now no prime nothing
	[Reply w/Quote]

02-11-2007, 12:58 PM	#14
Ecartman84 Your God Drives a Dime! Age: 25 Join Date: Sep 2004 Posts: 529 Location: Eugene, OR User is: OffLine	Re: engine cutting out Quote: Originally Posted by mrmohawk ok fixed that problem i put a new fuel pump in it and it drove excellent but then i was in the next county left my girlfriends house and truck just died fuel pump doesnt turn on now no prime nothing Sounds like you may have a loose connection somewhere
	[Reply w/Quote]