Throttle Body Plate Screws WTF

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Throttle Body Plate Screws WTF

Postby Lightning » Sun May 16, 2021 11:12 am

Any one else ever hear of the two screws holding the throttle plate in place coming undone while driving?!?!
I'm two hours from home and only 5 miles from our campsite when the two screws both let go and were sucked into cyl 1 and 6. The throttle plate dislodged, thankfully not completely, and got stuck in the throttle body at WOT. My accelerator pedel was stuck to the floor. I pulled the plugs and found scaring on the ground tabs of cyl 1 and 6 spark plugs confirming I have two screws, one in each, from the TB. To hold the TB plate mostly in place I used some bailing wire to tie it and limp it to camp.

I'm pretty pissed off, why would these ever fail? I'm guessing the previous owner was messing around with it and did not torque it down again properly. I'm pretty limited in cash and tools at camp, so I'll be risking the engine to get it home 150 miles.

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Re: Throttle Body Plate Screws WTF

Postby DSUZU » Sun May 16, 2021 1:28 pm

Wow! I'm surprised you didn't have major engine damage. Usually, those screws are staked after install by manufacturer or rebuilder to keep this from happening. Dennis
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
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