intermittent start
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
keep the plug in and disconnect the main wiring harness to the coil closest to the firewall and see if it starts
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
i have a 99 I don't have a ignition control module.......if you have a 95 you do have an ignition control module. go to rockauto and you will see wha tit looks like
Thread Starter
|
New User
Joined: Oct 2008
Posts: 20
Likes: 0
I cannot check your test as the truck starts at this present moment and runs fine.
Earlier, about an hour ago my brother suggested to check if I had a good ground point at cylinder head. I've hooked booster cable from neg bat post to top of engine and also tried neg bat post to coil pack chassis bolt. Neither test permitted the truck to start. So I guess I have correct ground supplied to cylinder head. and ground is not the source of problem.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
Before trying what you suggest, I had to put the spark plug back in place but wanted to adjust the gaping before. I measured 0.050. It is suggested 0042 to 0.046 (Haynes). These plugs are 1 year old. Now that I put back this plug in place the truck now starts and runs fine. Argg! Now I don't know if I'm experiencing the intermittent phase or not.
I cannot check your test as the truck starts at this present moment and runs fine.
Earlier, about an hour ago my brother suggested to check if I had a good ground point at cylinder head. I've hooked booster cable from neg bat post to top of engine and also tried neg bat post to coil pack chassis bolt. Neither test permitted the truck to start. So I guess I have correct ground supplied to cylinder head. and ground is not the source of problem.
I cannot check your test as the truck starts at this present moment and runs fine.
Earlier, about an hour ago my brother suggested to check if I had a good ground point at cylinder head. I've hooked booster cable from neg bat post to top of engine and also tried neg bat post to coil pack chassis bolt. Neither test permitted the truck to start. So I guess I have correct ground supplied to cylinder head. and ground is not the source of problem.
I have seen some people suggest. to take a spray bottle that will mist and fill it with water.. at night away from lights with the engine running mist the coils wires etc and look for sparks......if it sparks you might have found your issue.
Thread Starter
|
New User
Joined: Oct 2008
Posts: 20
Likes: 0
Autozone suggest this location: Under hood, driver side, lower engine area, mounted on intake manifold assembly...I cannot find it
From dealer documents (Mitchell repair information) and Haynes there are none.
I just contacted dealer, they say no ICM but TFI module is engine mounted. They could not give me more info on location.
Thread Starter
|
New User
Joined: Oct 2008
Posts: 20
Likes: 0
I've experienced this often in the past, it works very well for spark plug wires. I know this test is valid when checking for sensitive spark plug cables to humidity. The truck will not run fine, mine does when in operation. I could still do the test.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
Rockauto suggest one. I see what it looks like.
Autozone suggest this location: Under hood, driver side, lower engine area, mounted on intake manifold assembly...I cannot find it
From dealer documents (Mitchell repair information) and Haynes there are none.
I just contacted dealer, they say no ICM but TFI module is engine mounted. They could not give me more info on location.
Autozone suggest this location: Under hood, driver side, lower engine area, mounted on intake manifold assembly...I cannot find it
From dealer documents (Mitchell repair information) and Haynes there are none.
I just contacted dealer, they say no ICM but TFI module is engine mounted. They could not give me more info on location.
look on rockauto.com so you know what it looks like. I dont know much about the pre 96 obd-ii pcm's. I thought you had an obd-i and that the tfi was before that but i am not sure.
Thread Starter
|
New User
Joined: Oct 2008
Posts: 20
Likes: 0
Know half an hour later, truck wont start anymore. I tried right away what you have suggested earlier by unplugging rear coil pack: wont start, front coil pack: wont start
I went on Rockauto, I saw what it looks like...I can find it under the hood, it's maybe in a crampy place.
Dealer just confirmed that there is no ICM but rather the PCM that controls as per Haynes and Mitchell schematics I have in hand.
Question: Dealer say there is a TFI but I thought thse were only used in motors with distributors mine is distributor less.
I went on Rockauto, I saw what it looks like...I can find it under the hood, it's maybe in a crampy place.
Dealer just confirmed that there is no ICM but rather the PCM that controls as per Haynes and Mitchell schematics I have in hand.
Question: Dealer say there is a TFI but I thought thse were only used in motors with distributors mine is distributor less.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
DesertZuki
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
8
Nov 24, 2015 03:29 PM
Doctomario777
1983 - 2012 Ranger & B-Series
3
Mar 12, 2013 07:59 AM
