F-150 guys HELP!!! - TriStateTuners.com :: Home of Tristate Auto Enthusiast

UnderPoweredRS · 09-11-2005, 07:17 PM

Hey this is rfoy91tsi's girlfriend. My truck died and I have no idea why. Ralph is a subaru guy and cant fix it. Please help me get it runing again. Its a 91 f150 6cly 4 spd with o/d sounds like crap almost like it is missing and when i start it the idle drops to were it almost stalls than jumps back up again. it has new spark plug wires, spark plugs, distrabotor cap, and rotor.

the mike · 09-11-2005, 08:28 PM

Check the ignition module. They are known for failing. Should be mounted on the side of the distributor.

Is the truck running? Do you see black smoke out of the exhaust? Any weird noises?
If it is running, it sounds like a sensor is bad, 91 should be MAF. Start checking sensor connectors, vacuum lines.

Keep me posted, or IM me...

UnderPoweredRS · 09-12-2005, 12:10 PM

No smoke
Sounds like it's missing
when you rev it the RPM will drop then pick up and sound like it's missing as it revs.

SilverTurboRidin · 09-12-2005, 12:44 PM

Yeah defintely sounds like a sensor problem. Check the sensor on the intake first.

poolmike · 09-12-2005, 06:56 PM

Did you just replace the plugs, wires..... and then the problem started? Check to make sure all of the wires are in the proper firing order and that all of the plugs were gapped properly. I know its sounds obvious but double checking doesn't hurt.

UnderPoweredRS · 09-12-2005, 07:40 PM

She ran the Truck out of oil.

Then

I relaced the CAP and rotor
she replaced the oil&filter
We did plugs and wires

Truck runs fine after it warms up(we never kept it on long enough to know this until today)
It's hard to start and sometimes stalls right after starting.

the mike · 09-12-2005, 07:47 PM

Do a compression check, and look for bubbles in the coolant reservoir. Is there any smoke? If so, what color.

UnderPoweredRS · 09-12-2005, 09:54 PM

I have no idea what the plug gap is sopposed to be, The truck was painted awhile ago and they took the sticker off that says it so, we guessed and it still runs rough in first gear.

09-11-2005, 07:17 PM	#1
UnderPoweredRS Tri-State Post Whore Join Date: Mar 2005 Location: Lindenwold, NJ Member #233 iTrader: (0)	F-150 guys HELP!!! Hey this is rfoy91tsi's girlfriend. My truck died and I have no idea why. Ralph is a subaru guy and cant fix it. Please help me get it runing again. Its a 91 f150 6cly 4 spd with o/d sounds like crap almost like it is missing and when i start it the idle drops to were it almost stalls than jumps back up again. it has new spark plug wires, spark plugs, distrabotor cap, and rotor. __________________ My GC8 UR STi

09-11-2005, 08:28 PM	#2
the mike TST Ruined My Life! Join Date: Dec 2004 Location: 08075 Member #19 My Ride: 1991 Toyota Previa!!! iTrader: (1)	Check the ignition module. They are known for failing. Should be mounted on the side of the distributor. Is the truck running? Do you see black smoke out of the exhaust? Any weird noises? If it is running, it sounds like a sensor is bad, 91 should be MAF. Start checking sensor connectors, vacuum lines. Keep me posted, or IM me... __________________ My speed is only limited by my grip. Offramp Touge.

09-12-2005, 12:10 PM	#3
UnderPoweredRS Tri-State Post Whore Join Date: Mar 2005 Location: Lindenwold, NJ Member #233 iTrader: (0)	No smoke Sounds like it's missing when you rev it the RPM will drop then pick up and sound like it's missing as it revs. __________________ My GC8 UR STi

09-12-2005, 12:44 PM	#4
SilverTurboRidin Tri-State Post Whore Join Date: Feb 2005 Location: L-town PA Member #197 iTrader: (0)	Yeah defintely sounds like a sensor problem. Check the sensor on the intake first. __________________ Uhh used to be my dog you was in my left titty Scream RYDE OR DIE I thought you would die wit me Found out you a bitch you can't even ryde wit me Now it's a war you ain't on the side wit me To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

09-12-2005, 07:40 PM	#6
UnderPoweredRS Tri-State Post Whore Join Date: Mar 2005 Location: Lindenwold, NJ Member #233 iTrader: (0)	She ran the Truck out of oil. Then I relaced the CAP and rotor she replaced the oil&filter We did plugs and wires Truck runs fine after it warms up(we never kept it on long enough to know this until today) It's hard to start and sometimes stalls right after starting. __________________ My GC8 UR STi

09-12-2005, 06:56 PM	#5
poolmike Tri-State Post Whore Join Date: Jun 2005 Location: Richboro Member #543 My Ride: '68 Kaiser M715/ '37 Ford truck/'47 Dodge truck iTrader: (0)	Did you just replace the plugs, wires..... and then the problem started? Check to make sure all of the wires are in the proper firing order and that all of the plugs were gapped properly. I know its sounds obvious but double checking doesn't hurt.

09-12-2005, 07:47 PM	#7
the mike TST Ruined My Life! Join Date: Dec 2004 Location: 08075 Member #19 My Ride: 1991 Toyota Previa!!! iTrader: (1)	Do a compression check, and look for bubbles in the coolant reservoir. Is there any smoke? If so, what color. __________________ My speed is only limited by my grip. Offramp Touge.

09-12-2005, 09:54 PM	#8
UnderPoweredRS Tri-State Post Whore Join Date: Mar 2005 Location: Lindenwold, NJ Member #233 iTrader: (0)	I have no idea what the plug gap is sopposed to be, The truck was painted awhile ago and they took the sticker off that says it so, we guessed and it still runs rough in first gear. __________________ My GC8 UR STi

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