Ground Points
Lead Driver
Joined: Jun 2021
Posts: 5,221
Likes: 805
@subford
I cannot find those 2 grounds inside the cab on my 90 f150. Found all under hood. Any idea where those are on my model? Thanks.
I cannot find those 2 grounds inside the cab on my 90 f150. Found all under hood. Any idea where those are on my model? Thanks.
Junior User
Joined: Apr 2020
Posts: 52
Likes: 4
From: MASSACHUSETTS
there is a ground strap from your upper intake to the firewall, which shares a bolt with the bracket that supports the manifold. also i've seen ground straps on the hood hinges, and on the radius arm brackets, not sure these will affect anything but they're there. anyone have any info on the purpose of these?
Cargo Master
Joined: Nov 2009
Posts: 2,190
Likes: 620
there is a ground strap from your upper intake to the firewall, which shares a bolt with the bracket that supports the manifold. also i've seen ground straps on the hood hinges, and on the radius arm brackets, not sure these will affect anything but they're there. anyone have any info on the purpose of these?
Lead Driver
Joined: Jun 2021
Posts: 5,221
Likes: 805
the steel straps on body parts is for galvanic corrosion
Cargo Master
Joined: Nov 2009
Posts: 2,190
Likes: 620
If that's what they're for, they don't work very well, at least not on my '87 =P (Not saying you're wrong, you could very well be right, as to why that's why they're there.)
Lead Driver
Joined: Jun 2021
Posts: 5,221
Likes: 805
basically the concept should be that all panels and parts are connected to the same ground appropriately and you would avoid having positive charged parts compared toeach other or something
sane idea as clean coolant so it doesn’t conduct electricity
Junior User
Joined: Apr 2020
Posts: 52
Likes: 4
From: MASSACHUSETTS
the steel straps on body parts is for galvanic corrosion
Tuned
Joined: Apr 2003
Posts: 394
Likes: 13
From: 13th Colony
there is a ground strap from your upper intake to the firewall, which shares a bolt with the bracket that supports the manifold. also i've seen ground straps on the hood hinges, and on the radius arm brackets, not sure these will affect anything but they're there. anyone have any info on the purpose of these?
I also added another ground strap between the frame rail and body on the underside. The existing ones on both sides are rusty and filthy and couldn't see any easy way to clean them. I was afraid one of them might break if I removed it. Those straps just slide on with a tooth to hold them in place. I cleaned off the paint and put the new one on with screws then sprayed a coating of the battery terminal protector on outside of all connections.
Broncobasher
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Tuned
Joined: Apr 2003
Posts: 394
Likes: 13
From: 13th Colony
on a 90 it may be different spots. Try up on the firewall or the side of the cab but near the feet area. It looks like at least 91+ had them close to the door opening hinge area under plastic trim which is actually nice compared to pulling carpet on your belly or upside down with a flashlight wedged part way out of the cab to access them(cough gm) but I could see the vinyl floor trucks making it a little more prone to corrode by the doors. Easy to fix tho
Broncobasher
Trailering
Joined: Dec 2023
Posts: 17
Likes: 1
Transmission 1995 E150 Van intermittent auto transmission shifting lurches
Transmission 1995 E150 Van intermittent auto transmission shifting lurches. This is been bugging me for a few years now even after I have had the tranny looked at by a few specialists. New oil, new filter, one new solenoid…. It seems to act up more after driving on bumpy gravel roads. Sometimes when I turn off the engine for 10 seconds, it will shift properly….. I had a new ground strap attached to the tranny, May have helped for a bit. I am looking for more grounding ideas……..???? Or just ideas.
1st Gear
Joined: Nov 2024
Posts: 1
Likes: 0
Security Ground
Great thread, and I know this thread is years old.....but I just had my Bronco painted and the security gets triggered everytime I open the door. I have read and talked to ppl who said something could get painted and the ground may not be making contact and sets off the security. So my question is....which ground is that?
Thank you
Attachment 277903
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Attachment 277906
/[/QUOTE]
Thank you
Attachment 277903
Attachment 277901
Attachment 277905
Attachment 277906
/[/QUOTE]
3rd Gear
Joined: Aug 2024
Posts: 3
Likes: 1
From: Tx
Ground
Wish I had taken pictures now. So, going from memory. I am rebuilding an all original 91 F-250. I had a ground strap to the drivers side rear of the motor, another to the intake manifold, radiator support, lower front passenger side of the engine block, battery to frame. Probably are others that I forgot.
Basic function is to complete the electrical circuit for proper charging, voltage signals, etc. That is my short understanding.
Basic function is to complete the electrical circuit for proper charging, voltage signals, etc. That is my short understanding.
I have no interior or dash lights ty
Cross-Country
Joined: Oct 2023
Posts: 60
Likes: 22
5th Wheeling
Joined: Dec 2025
Posts: 38
Likes: 4
Hey, folks, maybe an old thread but I want to follow up and ask if there's a summary for grounding strap locations on a 1990 F-150 XLT/Lariat.
I have one under the passenger's side that's broken. I'm going to be looking to find/replace/confirm tightness of others.
I have one under the passenger's side that's broken. I'm going to be looking to find/replace/confirm tightness of others.
Cross-Country
Joined: Oct 2023
Posts: 60
Likes: 22
Try starting at post #3 above......