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Fuel woes!

  • Thread starter Thread starter SMOKEDYA
  • Start date Start date Apr 28, 2007

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 28, 2007
#1
  • Apr 28, 2007
  • #1
I posted this in 5.0 tech also, but just wanting some opinions and if any of you have had this happen. Been driving the 93 to break in the clutch. Tuesday i let it warm up for about 5 min before leaving work. I get about 1/2-1 mile away and it dies like i ran out of gas. I pull over try to start it, nothing. I then turn the key off then on and no pump cycle? Turn it off then on pump cycles start it go about 20 feet dies again. Do thekey pump cycles and go i get almost home and i had to stop at the light does it again? I get home go get my son from track and it does it again on our way home. I go out the next night start it let it run for about 20 min bliping the throttle every now and then does fine. Go for a drive get about 2 miles from home and does it all over again? I then go out the next morning and try to start it the pump cyles but real quick, shut the key off then on it cycles normal. So last night i try it and the pump dont cycle try it a couple times then it will normally. I start it run for a couple min then shut it down. Try it again starts then i disconnect the switch in the trunk. Try to restart it and fires right up. I then shut it off again, turn the key and the pump cycles quickly and slugishly start it dies. Now as of then it wont cycle? I check for power at the pump and it reads like 6.25. I'm not getting a check engine light and have good pressure when running. It dosent run any diffrent when driving it it just dies like i shut off the fuel. Could this be the relay's? pump? I have another pump and the relays are just $12 but who wants to go replacing the parts to find it wasent it? Or better yet i dont want to drop the tank to find the same thing! BTW this all started all of a sudden! peace



john
 

04MystiCobra

New Member
Jan 29, 2004
12
0
0
Corpus Christi, TX.
Apr 28, 2007
#2
  • Apr 28, 2007
  • #2
What pump do you have?
Hows it wired?
What type of filters are you using?
Where is your fuel pump relay and is it exposed to the elements?
Are you using an adj regulator?
 

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 28, 2007
#3
  • Apr 28, 2007
  • #3
04MystiCobra said:
What pump do you have?
Hows it wired?
What type of filters are you using?
Where is your fuel pump relay and is it exposed to the elements?
Are you using an adj regulator?
Click to expand...

It's wired just like stock, as far as i know it's a walbro/holley 255 pump it was installed before i got it to run a s/c. The one i have to replace it with is also a walbro/holley 255. Not shure on the filter but i'm gonna pick up a new one here in a bit, on the 93's they are located by the maf, but mine is in the inner fender now and is protected from weather atleast i beleive it is? (inner fender is in) yes i have an adjustable FPR with gauge mounted in the schrader valve opening. peace



john
 

04MystiCobra

New Member
Jan 29, 2004
12
0
0
Corpus Christi, TX.
Apr 28, 2007
#4
  • Apr 28, 2007
  • #4
When it does run whats the pressure at the regulator? Should be 30-40ish.
That relay can be very sensitive to corrosion and the water. I'd pull it and very closely look inside of it. Anything green is bad. Obviously rust as well.
Did the car previously have an external pump?
 

VR4

New Member
Mar 1, 2007
13
0
0
vancouver, wa
Apr 28, 2007
#5
  • Apr 28, 2007
  • #5
check that relay and carry a spare.

walbros are failure prone but this doesnt sound like a failing pump.
 

LordMustangGT

Member
Jan 9, 2006
118
0
17
Port Orchard, WA
Apr 28, 2007
#6
  • Apr 28, 2007
  • #6
I'd just spend the money buy a new relay, had this problem on a buddies, would start sometimes and not others, or just die, but start up in a few minutes, sound familer right, it was the relay, and his is a 93 to, and in the same spot. He wraped him up in a platic bag, never had a problem sence.

Matt
 

blkhorse

Founding Member
Oct 30, 1999
345
1
18
Apr 28, 2007
#7
  • Apr 28, 2007
  • #7
how old is the fuel filter?
 

Repostyle

Member
Jun 11, 2005
538
0
16
Portland, OR
Apr 28, 2007
#8
  • Apr 28, 2007
  • #8
I say plus one for the relay, but I would double check that your mercury switch is still mounted tight and upright.
 

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 29, 2007
#9
  • Apr 29, 2007
  • #9
Thanks for the info and help guy's! I spent a good part of yesturday (9-6) working troubleshooting and hunting down the right relay. Got it and works great now! You would know it but of all place's who had the RIGHT ONE! SHUCKS! Went to napa they tried to sell me one that wasent quite right, auto zone LOL they told me from 93-95 were all the same then finally schucks had the right one! Cost me $17? There was corrosion on the terminals and sorta rusty. peace


john
 

2004mysticobra

New Member
Nov 25, 2005
5
0
0
Lacey, WA
Apr 29, 2007
#10
  • Apr 29, 2007
  • #10
Cool! I hate that relay. I just covered mine as well and never had a problem after that.
 

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 29, 2007
#11
  • Apr 29, 2007
  • #11
I will prob go out and do the same. I have all it tucked inside the inner fenders, plus i usually dont drive in the rain because of this reason. But last couple of weeks i have to break in the clutch. peace



john
 

almostblown

New Member
Dec 16, 2005
109
0
0
Apr 29, 2007
#12
  • Apr 29, 2007
  • #12
But last couple of weeks i have to break in the clutch. peace
Click to expand...

Geez, thats a long time of light throttle use. Thats the story you fed us last night, too. That was me in the passenger seat of the the white Colorado last night.
 

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 29, 2007
#13
  • Apr 29, 2007
  • #13
LOL trust me if that isnt/wasent my excuess i would of been running lastnight! So was that you that came over here to get the parts that day with him? peace



john
 

almostblown

New Member
Dec 16, 2005
109
0
0
Apr 29, 2007
#14
  • Apr 29, 2007
  • #14
Nope, that wasnt me. I saw your car in the parking lot, thinking, I recognize that one. Then Mylan told me it used to be a cop car and he bought some stuff from you. Its a nice car, very clean and sharp. I remember you posting your new clutch before, I figured Id give you a hard time anyways.
 

Joey5.0

Member
Feb 13, 2006
313
1
16
Usa
Apr 30, 2007
#15
  • Apr 30, 2007
  • #15
Is this the relay under the seat?
 

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 30, 2007
#16
  • Apr 30, 2007
  • #16
87-92 V8 is under the driverseat, 93 ONLY is under the MAF or close to it on fender well. I hid all the wireing and filled all the holes so mine is now in the inner fender. I seen your fuel problems also in 5.0 section, any luck with yours yet?I got a 255 walbro pump ready to be dropped in i might sell to ya if you havent bought one. ALMOSTBLOWN yeah it's not in to bad of shape but def. not as nice as my 95 was. I hate white cars. Mine needs a little here and ther got a new bumper for the rear in my shed, then one of these days starting on the body work and color change. First thing for buissness is moving this week. thanks for the complaments tho. peace



john
 

YardSpecial

New Member
Mar 20, 2003
2,664
0
0
MT
Apr 30, 2007
#17
  • Apr 30, 2007
  • #17
Glad it was a easy fix.

255L pump is a LITTLE big for a a NA car...............IMOP ( heats fuel up)

I had great luck with Ford Racing 190L pumps.
 

SMOKEDYA

20+ Year Stangneter
Jul 13, 2003
3,637
8
79
Tucson AZ
Apr 30, 2007
#18
  • Apr 30, 2007
  • #18
YardSpecial said:
Glad it was a easy fix.

255L pump is a LITTLE big for a a NA car...............IMOP ( heats fuel up)

I had great luck with Ford Racing 190L pumps.
Click to expand...

It was in there cause the guy before me had a blower for it, but brian never purchased it from him and when i bought the car he had already sold it, i left it in cause was gonna (and still might ) run the bottle on it. peace



john
 

Joey5.0

Member
Feb 13, 2006
313
1
16
Usa
May 1, 2007
#19
  • May 1, 2007
  • #19
YardSpecial said:
Glad it was a easy fix.

255L pump is a LITTLE big for a a NA car...............IMOP ( heats fuel up)

I had great luck with Ford Racing 190L pumps.
Click to expand...

A FPR controls the amount of fuel though.



I put my Walbro pump is last night. Car runs fine again. The thing that was causing the car to die on the freeway though was my Fenderwell CAI getting Soaked with rain. Like i said the car only seemed to do this in the rain. I took my inner fenderwells out a few weeks ago for cleaning, and nver put them back in, causeing the Air filter to just get drenched
 
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