bucking and lost tach.
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Post Fiend
Joined: Oct 2006
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From: Where's my map???
bucking and lost tach.
I have a 93 Bronco V8. I got in and it started with no problem. Then I noticed the tach was not working. No biggie. After I backed out and dumped it in drive, It started bucking and will not go over 10 mph. Anybody have any idea what happened? TIA guys
Carpenter Local 745
Joined: Apr 2006
Posts: 5,794
Likes: 11
From: on da beach
My FSB was running rough after not driving it for a couple of months. I think I had bad gas. Put new gas and use Lucas injector cleaner in the tank. My truck runs like a top now.
Is your charging/battery system okay?
Gotta start somewhere.
Is your charging/battery system okay?
Gotta start somewhere.
Elder User
Joined: Apr 2005
Posts: 726
Likes: 3
can you give us some more info? like was the truck sitting for a long time. did you recently fix something etc.
sounds like a fuel issue, either tps. a bad sensor or something along those lines.
my 89f150 ran great and one day i came home for lunch, 30mins later on my way back to work and it started bucking and running really bad. It was a combo of things but i ended up replacing the ignition coil as well as all the plug, wires, cap/rotor and all was fine again.
sounds like a fuel issue, either tps. a bad sensor or something along those lines.
my 89f150 ran great and one day i came home for lunch, 30mins later on my way back to work and it started bucking and running really bad. It was a combo of things but i ended up replacing the ignition coil as well as all the plug, wires, cap/rotor and all was fine again.
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Post Fiend
Joined: Oct 2006
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From: Where's my map???
Originally Posted by shift1313
can you give us some more info? like was the truck sitting for a long time. did you recently fix something etc.
sounds like a fuel issue, either tps. a bad sensor or something along those lines.
my 89f150 ran great and one day i came home for lunch, 30mins later on my way back to work and it started bucking and running really bad. It was a combo of things but i ended up replacing the ignition coil as well as all the plug, wires, cap/rotor and all was fine again.
sounds like a fuel issue, either tps. a bad sensor or something along those lines.
my 89f150 ran great and one day i came home for lunch, 30mins later on my way back to work and it started bucking and running really bad. It was a combo of things but i ended up replacing the ignition coil as well as all the plug, wires, cap/rotor and all was fine again.
Postmaster
Joined: Jul 2006
Posts: 3,978
Likes: 0
From: Central PA
Yes the tach is wire into coil. He could check it it has 130000= As said (they usually go longer than that). But I swap em out on every new to me truck I get .
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Elder User
Joined: Apr 2005
Posts: 726
Likes: 3
coils are cheap to replace if you think its a problem.
your tach could also go out if the power or ground to it goes bad. if you have a stock in dash tach thats not usually the case.
the weird thing is you said it started and ran fine when you noticed the tach wasnt working. And the bucking didnt start til you went forward.
Is everything fine if you drive in reverse? what about free revving in N.
your tach could also go out if the power or ground to it goes bad. if you have a stock in dash tach thats not usually the case.
the weird thing is you said it started and ran fine when you noticed the tach wasnt working. And the bucking didnt start til you went forward.
Is everything fine if you drive in reverse? what about free revving in N.
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Post Fiend
Joined: Oct 2006
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From: Where's my map???
Originally Posted by shift1313
coils are cheap to replace if you think its a problem.
your tach could also go out if the power or ground to it goes bad. if you have a stock in dash tach thats not usually the case.
the weird thing is you said it started and ran fine when you noticed the tach wasnt working. And the bucking didnt start til you went forward.
Is everything fine if you drive in reverse? what about free revving in N.
your tach could also go out if the power or ground to it goes bad. if you have a stock in dash tach thats not usually the case.
the weird thing is you said it started and ran fine when you noticed the tach wasnt working. And the bucking didnt start til you went forward.
Is everything fine if you drive in reverse? what about free revving in N.
I have not had any time to look at it b/c I am racing against mother nature to get my roof closed up.