Engine cutting out on me, no codes.
Thread Starter
|
More Turbo
Joined: Sep 2012
Posts: 739
Likes: 256
From: Zimmerman, MN
Engine cutting out on me, no codes.
My '92 F150 has 198k miles, and somewhere around 150k it started cutting out on me on rainy/wet days (and/or when I had a coolant leak). I always assumed that water was getting into somewhere it shouldn't be, but I never dug into it too far, as I knew I was going to part it out soon (IOW, now), so I just drove my Ridgeline when it rained.
But now my '92 F250 (109K miles) has started to do this as well....but on nice, dry days.
Symptoms: While driving, the engine will cut-out momentarily. And by that I mean for only a half-second or so, and it's almost like someone has shut-off the ignition for a split second. I've seen my tach drop to 0 RPM twice when this has happened (other times I've been looking elsewhere), so I'm reasonably sure this is electrical in nature. I tried pulling codes on the truck right after this happened this past weekend, but the only thing I got was my "usual" code 41 (I still haven't tracked down my exhaust leak and/or looked at my RH O2 sensor).
So now I have two trucks that are doing the same da** thing.
Has anyone experienced this before, and could you possibly give me a place to start looking?
Thanks.
Jim
But now my '92 F250 (109K miles) has started to do this as well....but on nice, dry days.
Symptoms: While driving, the engine will cut-out momentarily. And by that I mean for only a half-second or so, and it's almost like someone has shut-off the ignition for a split second. I've seen my tach drop to 0 RPM twice when this has happened (other times I've been looking elsewhere), so I'm reasonably sure this is electrical in nature. I tried pulling codes on the truck right after this happened this past weekend, but the only thing I got was my "usual" code 41 (I still haven't tracked down my exhaust leak and/or looked at my RH O2 sensor).
So now I have two trucks that are doing the same da** thing.
Has anyone experienced this before, and could you possibly give me a place to start looking?
Thanks.
Jim
Logistics Pro
Joined: Nov 2013
Posts: 3,928
Likes: 1,198
From: Mojave, Ca
This is a common problem on these trucks and it's caused by 1 of 3 things.
1) ignition switch under the steering column is failing. These often burn and melt over time, causing the contacts to fail to touch each other. Do all the gauge needles move slightly during the cut out event, or just the tach?
2) ignition coil's plastic rectangular connector is broken and the wire terminals are barely making contact. You can give these two wires a gentle tug to see if they pull out of the rectangular connector. Also check them for corrosion and broken wires inside the insulation.
3) It's less common, but the ignition coil itself may be failing. This is harder to diagnose since the failure is internal to the coil.
1) ignition switch under the steering column is failing. These often burn and melt over time, causing the contacts to fail to touch each other. Do all the gauge needles move slightly during the cut out event, or just the tach?
2) ignition coil's plastic rectangular connector is broken and the wire terminals are barely making contact. You can give these two wires a gentle tug to see if they pull out of the rectangular connector. Also check them for corrosion and broken wires inside the insulation.
3) It's less common, but the ignition coil itself may be failing. This is harder to diagnose since the failure is internal to the coil.
Thread Starter
|
More Turbo
Joined: Sep 2012
Posts: 739
Likes: 256
From: Zimmerman, MN
This is a common problem on these trucks and it's caused by 1 of 3 things.
1) ignition switch under the steering column is failing. These often burn and melt over time, causing the contacts to fail to touch each other. Do all the gauge needles move slightly during the cut out event, or just the tach?
2) ignition coil's plastic rectangular connector is broken and the wire terminals are barely making contact. You can give these two wires a gentle tug to see if they pull out of the rectangular connector. Also check them for corrosion and broken wires inside the insulation.
3) It's less common, but the ignition coil itself may be failing. This is harder to diagnose since the failure is internal to the coil.
1) ignition switch under the steering column is failing. These often burn and melt over time, causing the contacts to fail to touch each other. Do all the gauge needles move slightly during the cut out event, or just the tach?
2) ignition coil's plastic rectangular connector is broken and the wire terminals are barely making contact. You can give these two wires a gentle tug to see if they pull out of the rectangular connector. Also check them for corrosion and broken wires inside the insulation.
3) It's less common, but the ignition coil itself may be failing. This is harder to diagnose since the failure is internal to the coil.
Since it's electrical, a small voice in the back of mind was telling me "ignition switch" as well, but for some reason I haven't replaced it yet. Need to learn to listen to myself more often, maybe....
I never thought of the coil connections, or the actual coil, but I will certainly give that connector a good look (and cleaning), and replace the coil "just because".
Thanks!
Jim
Thread Starter
|
More Turbo
Joined: Sep 2012
Posts: 739
Likes: 256
From: Zimmerman, MN
No, not yet. Been down with pneumonia the past couple weeks and I haven't felt like doing anything physical. Every time I moved around the lung oysters caused me to cough so much my chest started to hurt.
Thankfully the crud in my lungs is about 90% gone (knock on wood!), so I'll be getting after this as soon as I can get outside for more than 5 minutes without the dry air tearing up my throat.
Thankfully the crud in my lungs is about 90% gone (knock on wood!), so I'll be getting after this as soon as I can get outside for more than 5 minutes without the dry air tearing up my throat.
Thread
Thread Starter
Forum
Replies
Last Post
Matthew 300-6
1987 - 1996 F150 & Larger F-Series Trucks
28
Jun 8, 2023 03:23 PM
crawdad
1987 - 1996 F150 & Larger F-Series Trucks
7
Feb 5, 2006 05:19 PM
