plz help gas gusler!!! - Pirate4x4.Com : 4x4 and Off-Road Forum

epicsling · 12-21-2005, 06:09 AM

87 ranger 2.9 xlt ext cab auto 4x4

why is it when im going down the hwy in over drive i got to put my foot threw the firewall just to keep going 75mph. i get about 200 miles to a tank.

please help what can i do.
epicsling@yahoo.com

Bamataco1 · 12-21-2005, 06:56 AM

Do you have over sized tires? Is the truck stock? Is it running right other than the gas problem?

Broncrick · 12-21-2005, 07:07 AM

Assuming it ran better, Cat?

BrokeCuzWheelin · 12-21-2005, 11:06 AM

Drive slower

epicsling · 12-21-2005, 04:14 PM

yes the truck is totally stock. normal tires. truck runs fine minus the stated problem. it also runs weak in overdrive when stressed. i was thinkin maybe the low pressure pump might have gone out. the high press is loud, so loud im not sure if i can hear the low press. i do feel a slight vibration on the outlet hose from low press pump but that could be caused by the high press pump sucking out the fuel. i cut a access panel in the bed to test the low press pump with the key on but i was told that if i use a test light on it i will blow my ecu. i know it sounds stupid but its not a chance i want to take.

bobbywalter · 12-21-2005, 07:50 PM

you wont blow the ecu, its not connected to the pumps, it only grounds a relay to run the pumps.

sounds like the low pressure may still work and the high is laying down too. if it has the canister filter still it could be plugged as well. i got one here i am looking at this weekend with the same problem. it has good f/p at idle, and its a brand new engine..figure the injectors are bad or the oversize cam is causing problems if it is not bad pump volume.

epicsling · 12-23-2005, 05:49 AM

how can i test the pumps. both pumps and filter are about 5mo old

Lars915 · 12-23-2005, 06:00 AM

An 87 Ranger was engineered to run 55mph. At 75 you're way out of the efficiency curve. Slow down.

epicsling · 12-23-2005, 06:16 AM

R U Serious!!!!!!!!! I Hear What You Are Saying. But I Know That This Truck Can Run Better. My 88 Nissian P/u 4cyl 4 Spd Had More Power, Better Preformance, And Better Mpg. And I Could Run It Down The Highway Up To 80mph.

epicsling · 12-23-2005, 06:18 AM

my check engine light has not come on. if i have a sensor out it should be lit, correct?

bobbywalter · 12-23-2005, 06:43 AM

it will strobe intermittently unless something is dead. when its one or two things out of range it wont leave it on. it is is on, your in fmem and it will run like nutless ass like your having.

does it code still?

epicsling · 12-23-2005, 07:07 AM

"does it code still?"

what do you mean. on my yota i can self test. can i do the same w/ my ranger.

demonranger · 12-23-2005, 08:27 AM

yes you can pull codes yourself.

you need to find the diagnostic connector in the engine compartment you short two pins & then count the # of times the CEL flashes you'll need a manual for what the codes mean.

Check fuel pressure.
Bad FPR will give you very bad economy.

mileage you need to change gears. they were geared to run 55. I pulled 20-22 out of my 2.9 5 speed w/ 3.55 gears on 235/75/15 tires. Economy is going to be given my keeping the engine under 3k. I can just about guarantee that you're running far over that right now.

guessing that you've prob got a bad O2 Sensor.

epicsling · 12-23-2005, 09:33 AM

thanks i will try the test. and take a look at the o2. but i have no ideal what kind of gears are in this thing. or where to look.

epicsling · 01-02-2006, 07:23 AM

any other ideals?

demonranger · 01-03-2006, 06:28 AM

gears are on a tag attached to the rear diff or you can cross reference the rear axle code from the info tag on the driver's door.

how many gallons are you putting in when you fill up your tank? IIRC 87 was the swap year for the fuel tank size and you may have the small tank 12 or 15 gallons I think.

12-21-2005, 06:09 AM	#1 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	plz help gas gusler!!! 87 ranger 2.9 xlt ext cab auto 4x4 why is it when im going down the hwy in over drive i got to put my foot threw the firewall just to keep going 75mph. i get about 200 miles to a tank. please help what can i do. epicsling@yahoo.com

12-21-2005, 07:07 AM	#3 (permalink)
Broncrick Registered User Join Date: Sep 2000 Member # 1713 Location: Sacto & Nevada City Posts: 587	Assuming it ran better, Cat? __________________ 69 EB ARB's, 37's, 5.0, ZF, 148:1 bla, bla, bla.....

12-21-2005, 11:06 AM	#4 (permalink)
BrokeCuzWheelin Registered User Join Date: Nov 2004 Member # 39126 Location: West Allis, WI Posts: 204	Drive slower __________________ [URL="www.damageinc4x4club.com"]Damage Inc. 4x4 Club - Milwaukee WI[/URL] [URL="www.wohva.com"]Wisconsin Off-Highway Vehicle Association[/URL]

12-21-2005, 07:50 PM	#6 (permalink)
bobbywalter winch operator Join Date: Dec 2002 Member # 15473 Location: prudenville mi Posts: 702	you wont blow the ecu, its not connected to the pumps, it only grounds a relay to run the pumps. sounds like the low pressure may still work and the high is laying down too. if it has the canister filter still it could be plugged as well. i got one here i am looking at this weekend with the same problem. it has good f/p at idle, and its a brand new engine..figure the injectors are bad or the oversize cam is causing problems if it is not bad pump volume. __________________ if only 88 ranger ext cab pos hackjob powered by a 6.5 diesel clattering against a 4l80 thats punishing a f208 that is turning ford 60's rolling on 33-44 in tires depending on the mission at hand how ya like me now??

12-23-2005, 06:43 AM	#11 (permalink)
bobbywalter winch operator Join Date: Dec 2002 Member # 15473 Location: prudenville mi Posts: 702	it will strobe intermittently unless something is dead. when its one or two things out of range it wont leave it on. it is is on, your in fmem and it will run like nutless ass like your having. does it code still? __________________ if only 88 ranger ext cab pos hackjob powered by a 6.5 diesel clattering against a 4l80 thats punishing a f208 that is turning ford 60's rolling on 33-44 in tires depending on the mission at hand how ya like me now??

12-21-2005, 06:56 AM	#2 (permalink)
Bamataco1 Registered User Join Date: Aug 2005 Member # 51216 Location: Tuscaloosa,Alabama Posts: 13	Do you have over sized tires? Is the truck stock? Is it running right other than the gas problem?

12-21-2005, 04:14 PM	#5 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	yes the truck is totally stock. normal tires. truck runs fine minus the stated problem. it also runs weak in overdrive when stressed. i was thinkin maybe the low pressure pump might have gone out. the high press is loud, so loud im not sure if i can hear the low press. i do feel a slight vibration on the outlet hose from low press pump but that could be caused by the high press pump sucking out the fuel. i cut a access panel in the bed to test the low press pump with the key on but i was told that if i use a test light on it i will blow my ecu. i know it sounds stupid but its not a chance i want to take.

12-23-2005, 05:49 AM	#7 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	how can i test the pumps. both pumps and filter are about 5mo old

12-23-2005, 06:00 AM	#8 (permalink)
Lars915 Registered User Join Date: Jul 2002 Member # 12876 Location: Loveland, CO Posts: 874	An 87 Ranger was engineered to run 55mph. At 75 you're way out of the efficiency curve. Slow down.

12-23-2005, 06:16 AM	#9 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	R U Serious!!!!!!!!! I Hear What You Are Saying. But I Know That This Truck Can Run Better. My 88 Nissian P/u 4cyl 4 Spd Had More Power, Better Preformance, And Better Mpg. And I Could Run It Down The Highway Up To 80mph.

12-23-2005, 06:18 AM	#10 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	my check engine light has not come on. if i have a sensor out it should be lit, correct?

12-23-2005, 07:07 AM	#12 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	"does it code still?" what do you mean. on my yota i can self test. can i do the same w/ my ranger.

12-23-2005, 08:27 AM	#13 (permalink)
demonranger Rock God Join Date: Mar 2003 Member # 18283 Location: Florida Posts: 1,285	yes you can pull codes yourself. you need to find the diagnostic connector in the engine compartment you short two pins & then count the # of times the CEL flashes you'll need a manual for what the codes mean. Check fuel pressure. Bad FPR will give you very bad economy. mileage you need to change gears. they were geared to run 55. I pulled 20-22 out of my 2.9 5 speed w/ 3.55 gears on 235/75/15 tires. Economy is going to be given my keeping the engine under 3k. I can just about guarantee that you're running far over that right now. guessing that you've prob got a bad O2 Sensor. __________________ There are no rules. You have to think!

12-23-2005, 09:33 AM	#14 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	thanks i will try the test. and take a look at the o2. but i have no ideal what kind of gears are in this thing. or where to look.

01-02-2006, 07:23 AM	#15 (permalink)
epicsling Registered User Join Date: May 2005 Member # 47530 Location: Texas Posts: 72	any other ideals?

01-03-2006, 06:28 AM	#16 (permalink)
demonranger Rock God Join Date: Mar 2003 Member # 18283 Location: Florida Posts: 1,285	gears are on a tag attached to the rear diff or you can cross reference the rear axle code from the info tag on the driver's door. how many gallons are you putting in when you fill up your tank? IIRC 87 was the swap year for the fuel tank size and you may have the small tank 12 or 15 gallons I think. __________________ There are no rules. You have to think!

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