Hi Guys, hope someone has a miracle idea, although I probably know the answer to this problem already.
I finally got around to checking the timing and tps of my 87 Turbo,Automatic that I got in Oct. I felt the idle was not quite right, it seems a bit low (about 550 in park), and a bit lumpy at times, mostly when fully warmed up. throttle response seems good, no lag, backfiring, or jumping around. The timing is spot on, but the tps as I suspected is not. It measures 6.15 ohms (20k scale),with the 0.9mm feeler gauge in place. I understand it should be infinity. So I set about to adjust it. Now here's the problem, The bottom screw is worn stripped, (honest guys it wasn't me), I am able to get an offset phillips head in there, but not enough leverage to turn it, it is only chewing it up more than it was. I was able to get a mirror in there and see that it is pretty badly stripped. If it wasn't already stripped, the offset phillips would have worked fine. So I fiqured I would take it to the toyota dealer. They checked it out, and confirmed that it was out of adjustment, and also that the throttle body is clean inside, as someone cleaned it before I had it. They also verified the timing was good. But they said they could not get the screw loose without taking the whole intake manifold off, a big money job. So I left there as I felt there must be a less involved way to do it.
So do any of you guys know of a better way to get the bottom screw loose. Special tool, extractor, etc. without taking the intake manifold off.
I thought about a small ratchet with a screw extractor or phillips bit, but don't know if I can get enough force on it to not strip the screw worse, or trying to unbolt the ISC and moving it just enough out of the way to get an extension with a screw extractor tip in there, or an impact driver in there. or at very last ditch effort, taking the top screw off and just breaking it out of there, once removed, I can just remove the bottom screw with a pliers. And get a new tps to put back in with hex head bolts.
Thanks for any ideas.--Semper Fi
I finally got around to checking the timing and tps of my 87 Turbo,Automatic that I got in Oct. I felt the idle was not quite right, it seems a bit low (about 550 in park), and a bit lumpy at times, mostly when fully warmed up. throttle response seems good, no lag, backfiring, or jumping around. The timing is spot on, but the tps as I suspected is not. It measures 6.15 ohms (20k scale),with the 0.9mm feeler gauge in place. I understand it should be infinity. So I set about to adjust it. Now here's the problem, The bottom screw is worn stripped, (honest guys it wasn't me), I am able to get an offset phillips head in there, but not enough leverage to turn it, it is only chewing it up more than it was. I was able to get a mirror in there and see that it is pretty badly stripped. If it wasn't already stripped, the offset phillips would have worked fine. So I fiqured I would take it to the toyota dealer. They checked it out, and confirmed that it was out of adjustment, and also that the throttle body is clean inside, as someone cleaned it before I had it. They also verified the timing was good. But they said they could not get the screw loose without taking the whole intake manifold off, a big money job. So I left there as I felt there must be a less involved way to do it.
So do any of you guys know of a better way to get the bottom screw loose. Special tool, extractor, etc. without taking the intake manifold off.
I thought about a small ratchet with a screw extractor or phillips bit, but don't know if I can get enough force on it to not strip the screw worse, or trying to unbolt the ISC and moving it just enough out of the way to get an extension with a screw extractor tip in there, or an impact driver in there. or at very last ditch effort, taking the top screw off and just breaking it out of there, once removed, I can just remove the bottom screw with a pliers. And get a new tps to put back in with hex head bolts.
Thanks for any ideas.--Semper Fi