TFI Screws
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Junior User
Joined: Aug 2002
Posts: 70
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From: Indianapolis USA
TFI Screws
Hi we just replaced the TFI and I think my husband is ready to turn in his socket set
, I really hate it when he works on the vehicles. Anyways he lost one of the screws to the TFI. Does anyone know what size screws they are? The parts store doesn't seem to have anyone working there with half a brain because they don't know and won't find out. Replaceing the TFI has helped some but now it wants to idle between 1500-2000. Don't like backing off the clutch just to bring the idle down when I am stopped. Any clues? I've ridden a few Bronc's in my time and never got as big of a pain in the rear as this truck is turning out to be. But its paid for, I could really use some experienced help though figuring out how to make it run right. One other thing every once in a while I get a thumping from underneath when I hit a bump. Any clues there? Thanks for any help in advance.
Think I'm going to be spending a lot of time on this site.
Again Thanks
Dawn
, I really hate it when he works on the vehicles. Anyways he lost one of the screws to the TFI. Does anyone know what size screws they are? The parts store doesn't seem to have anyone working there with half a brain because they don't know and won't find out. Replaceing the TFI has helped some but now it wants to idle between 1500-2000. Don't like backing off the clutch just to bring the idle down when I am stopped. Any clues? I've ridden a few Bronc's in my time and never got as big of a pain in the rear as this truck is turning out to be. But its paid for, I could really use some experienced help though figuring out how to make it run right. One other thing every once in a while I get a thumping from underneath when I hit a bump. Any clues there? Thanks for any help in advance.Think I'm going to be spending a lot of time on this site.
Again Thanks
Dawn
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
TFI Screws
One other thing every
>once in a while I get a thumping from underneath when I hit
>a bump. Any clues there?
Probably lots of suspension components that could cause this. The first that comes to my mind is the radius arm (sometimes called control arm) bushings. They are located where the redius arm attaches to the frame. To check them, grab the radius arm and see if it moves relative to the frame.
>once in a while I get a thumping from underneath when I hit
>a bump. Any clues there?
Probably lots of suspension components that could cause this. The first that comes to my mind is the radius arm (sometimes called control arm) bushings. They are located where the redius arm attaches to the frame. To check them, grab the radius arm and see if it moves relative to the frame.
Post Fiend
Joined: Jun 2002
Posts: 13,873
Likes: 3
From: Atlanta GA
TFI Screws
At most NAPA and Autozone stores they have a size and pitch thread gauge next to the screw/bolt hardware section. Take it off at the store and replace both Torx screws with bolts. Just do not over tighten the bolts when replacing. I could be wrong, but, I think they are about a 8 MM thread.
Senior User
Joined: Aug 2002
Posts: 104
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From: Madison USA
TFI Screws
As far as idling high, have you adjusted the idle at all? Before doing anything, clean the throttle body, and even remove the IAC (the little round looking thingie on the right side of the upper intake) and spary carb or throttle body cleaner in it to clean.
After doing that, i do believe the best way to set the idle is that of this...
1.) bring engine to full operating temperature
2.) disconnect the IAC at teh connector (engine may stall, which is ok)
3.) adjust throttle stop screw (you should be able to use your fingers to adjust once you remove the plastic guard over the throttle body so that engine will stay running, and idle around 650RPM
4.) Stop engine, disconnect battery for a while (10-15 minutes)
5.) Start engine, should idle around 850-900RPM after it idles for a few minutes and learns itself.
This all assuming so with the 2.9L. I'm 18, and just sold my 1988 with 180,000 miles. I drove it for 2 years and 30,000 miles, and i've never seen another run so well (5 speed like yours). I hope this helps, if you have any questions, post them, i'll make it a point to check
Gary
After doing that, i do believe the best way to set the idle is that of this...
1.) bring engine to full operating temperature
2.) disconnect the IAC at teh connector (engine may stall, which is ok)
3.) adjust throttle stop screw (you should be able to use your fingers to adjust once you remove the plastic guard over the throttle body so that engine will stay running, and idle around 650RPM
4.) Stop engine, disconnect battery for a while (10-15 minutes)
5.) Start engine, should idle around 850-900RPM after it idles for a few minutes and learns itself.
This all assuming so with the 2.9L. I'm 18, and just sold my 1988 with 180,000 miles. I drove it for 2 years and 30,000 miles, and i've never seen another run so well (5 speed like yours). I hope this helps, if you have any questions, post them, i'll make it a point to check
Gary
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Junior User
Joined: Aug 2002
Posts: 70
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From: Indianapolis USA
TFI Screws
Thanks for the replys. Was able to get the screws and fixed that prob. After putting in a new fuel pressure regulator, TPS, and chopping the exhaust it runs better. Have not taken the whole intake apart to clean it yet but I did spray 2 cans of TB cleaner through it and it was pretty gunked up so I will do the thourough cleaning when I get a chance. The thumping may well have been the exhaust as when I got under there the muffler was able to rattle agaist the frame. Will know more as I get to put some miles on it.
