plow truck wont stay running???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

3/4tonterror · 12-05-2007, 01:56 PM

88 ford f150, 4.9 straight 6. it wont stay running with the COIL WIRE PLUGGED IN, IF I LET THE COIL WIRE JUST REST NEAR THE TERMINAL ON THE CAP,OR NEAR THE COIL IT STARTS AND RUNS PERFECT, BUT WHEN I TRY TO CONNECT IT EVEN WHEN RUNNING IT DIES/OR WONT START.
I REPLACED THE CAP/ROTOR, IT STILL DOES IT. INSTALLED DIFFERENT COIL/AND WIRE STILL DOES IT.
Anybody have an idea ???????

Rreemo · 12-05-2007, 02:20 PM

Wow, that's a pretty odd ball sounding problem there...can't say I've ever seen it, and I used to be a wrench in a Ford dealership (for years).

Nevertheless, taking a guess I'd have to say to check grounds on this deal...a bad ground can cause some strange behavior.

3/4tonterror · 12-05-2007, 03:02 PM

ya, it makes no sence to me. plugged in wont start or stay running, loose it runs/starts perfect.im lost what to try now.

Bus Ted Knuckle · 12-05-2007, 03:10 PM

When you have weak spark, holding the wire away from the terminal will build up resistance and make the spark stonger.

I hauled in a tractor once that the previous owner rigged up wire clips to hold each spark plug wire about an inch off of each plug. Sure would have been easier to do a tune up!

I'd look for a loose connection/ bad ground. Does it have an old style coil? If so do you have the wire from the battery attached to the positive side of the coil, and the negative attached to the distributer?

3/4tonterror · 12-05-2007, 03:30 PM

oem,coil and wiring, square coil mounted on side of block,factory connecters, never been messed with. i tried an MSD BLASTER 2 COIL, and it still did it. but ill check all wires/grounds thow. I DID NOT TRY THE FACTORY RESISTOR/CONDENSER THAT IS WIRED IN SERIES WITH IT.MAYBE THAT???

Bus Ted Knuckle · 12-05-2007, 04:03 PM

Quote:

Originally Posted by 3/4tonterror

oem,coil and wiring, square coil mounted on side of block,factory connecters, never been messed with. i tried an MSD BLASTER 2 COIL, and it still did it. but ill check all wires/grounds thow. I DID NOT TRY THE FACTORY RESISTOR/CONDENSER THAT IS WIRED IN SERIES WITH IT.MAYBE THAT???

I'd check that for sure.

**special-K** · 12-06-2007, 09:12 AM

I`m not at all familiar with these trucks,but my thought was condensor or whatever serves that purpose.

**old Rusty C10** · 12-06-2007, 09:54 AM

if in doubt about a ford go to www.fordtruckenthusiasts.com they know as much about fords as we do chevys

3/4tonterror · 12-06-2007, 03:27 PM

thanks for the ford site, but so far they dont know either. Everything they mention ive tried allready. still nothing. im ready to call a junkyard.

sneakysnake · 12-07-2007, 11:08 AM

Im curious how this one ends.LOL
Like "Bus Ted Knuckle" stated Ive seen plugs that would'nt fire unless the wire was having to jump the gap, but all 6? Id still change the plugs and then the wires if that didnt fix it.

Chevytrux4me · 12-08-2007, 01:15 AM

One of the Corvairs I've had had that very same problem once. Replaced everything possible in a normal tune-up. Never did figure it out. Someone said something about the key switch causing that. Might try to hot wire the darn thing, by-passing the key switch. Also try to connect a jumper cable from the block to the frame, as a test to make sure a ground strap isn't loose or broken. Please keep us posted if you find out. I'd love to know...

12-05-2007, 01:56 PM	#1
3/4tonterror Registered User Join Date: Dec 2006 Location: jaffrey,NH Posts: 325	plow truck wont stay running???? 88 ford f150, 4.9 straight 6. it wont stay running with the COIL WIRE PLUGGED IN, IF I LET THE COIL WIRE JUST REST NEAR THE TERMINAL ON THE CAP,OR NEAR THE COIL IT STARTS AND RUNS PERFECT, BUT WHEN I TRY TO CONNECT IT EVEN WHEN RUNNING IT DIES/OR WONT START. I REPLACED THE CAP/ROTOR, IT STILL DOES IT. INSTALLED DIFFERENT COIL/AND WIRE STILL DOES IT. Anybody have an idea ???????

12-05-2007, 02:20 PM	#2
Rreemo Registered User Join Date: Oct 2005 Location: North Texas Posts: 179	Re: plow truck wont stay running???? Wow, that's a pretty odd ball sounding problem there...can't say I've ever seen it, and I used to be a wrench in a Ford dealership (for years). Nevertheless, taking a guess I'd have to say to check grounds on this deal...a bad ground can cause some strange behavior. __________________ 72' LWB Cheyenne 73' Camaro Z28/RS 70' Chevelle RagTop 00=ss=00

12-05-2007, 03:02 PM	#3
3/4tonterror Registered User Join Date: Dec 2006 Location: jaffrey,NH Posts: 325	Re: plow truck wont stay running???? ya, it makes no sence to me. plugged in wont start or stay running, loose it runs/starts perfect.im lost what to try now.

12-05-2007, 03:10 PM	#4
Bus Ted Knuckle Son of a gun Join Date: Jan 2007 Location: Hot Springs, Arkansas Posts: 1,636	Re: plow truck wont stay running???? When you have weak spark, holding the wire away from the terminal will build up resistance and make the spark stonger. I hauled in a tractor once that the previous owner rigged up wire clips to hold each spark plug wire about an inch off of each plug. Sure would have been easier to do a tune up! I'd look for a loose connection/ bad ground. Does it have an old style coil? If so do you have the wire from the battery attached to the positive side of the coil, and the negative attached to the distributer? __________________ Bill BEATERS ARE NEATER Last edited by Bus Ted Knuckle; 12-05-2007 at 03:19 PM. Reason: added info

12-05-2007, 03:30 PM	#5
3/4tonterror Registered User Join Date: Dec 2006 Location: jaffrey,NH Posts: 325	Re: plow truck wont stay running???? oem,coil and wiring, square coil mounted on side of block,factory connecters, never been messed with. i tried an MSD BLASTER 2 COIL, and it still did it. but ill check all wires/grounds thow. I DID NOT TRY THE FACTORY RESISTOR/CONDENSER THAT IS WIRED IN SERIES WITH IT.MAYBE THAT???

12-06-2007, 09:12 AM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: plow truck wont stay running???? I`m not at all familiar with these trucks,but my thought was condensor or whatever serves that purpose. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

12-06-2007, 09:54 AM	#8
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,348	Re: plow truck wont stay running???? if in doubt about a ford go to www.fordtruckenthusiasts.com they know as much about fords as we do chevys __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! Last edited by old Rusty C10; 12-06-2007 at 09:54 AM.

12-06-2007, 03:27 PM	#9
3/4tonterror Registered User Join Date: Dec 2006 Location: jaffrey,NH Posts: 325	Re: plow truck wont stay running???? thanks for the ford site, but so far they dont know either. Everything they mention ive tried allready. still nothing. im ready to call a junkyard.

12-07-2007, 11:08 AM	#10
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: plow truck wont stay running???? Im curious how this one ends.LOL Like "Bus Ted Knuckle" stated Ive seen plugs that would'nt fire unless the wire was having to jump the gap, but all 6? Id still change the plugs and then the wires if that didnt fix it.

12-08-2007, 01:15 AM	#11
Chevytrux4me Certified Gearhead Join Date: Feb 2007 Location: Athens, West Virginia Posts: 186	Re: plow truck wont stay running???? One of the Corvairs I've had had that very same problem once. Replaced everything possible in a normal tune-up. Never did figure it out. Someone said something about the key switch causing that. Might try to hot wire the darn thing, by-passing the key switch. Also try to connect a jumper cable from the block to the frame, as a test to make sure a ground strap isn't loose or broken. Please keep us posted if you find out. I'd love to know... __________________ "I drive my pickup into the big city, 'n write my room number right on the bottom o' my boot. Jus' so I don't forget where I live. That's right, y'all. That's how I roll!"



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