TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Oil pressure switch

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Old 09-12-2003, 05:50 PM
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Car: 88 formula WS6
Engine: 305 Lo3
Transmission: 700-R4
Oil pressure switch

Anybody know where the oil pressure switch is located? (the one that runs the fuel pump when the relay quits) 88 form.Lo3 Tbi auto trans. thanks!
Old 09-12-2003, 10:03 PM
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pretty sure is somewhere near the oil filter on the LO3 cars.

On my L98 GTA its up behind the distributor. But thats a 89 TPI motor. Im almost positive for TBI cars that its on the drivers side of the block, down low, above the oil filter somewhere. Someone else correct me if I'm wrong, because I don't have a LO3 to go look at anymore.
Old 09-12-2003, 10:06 PM
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Car: 88 formula WS6
Engine: 305 Lo3
Transmission: 700-R4
Sounds good to me! I'll try there first. I have been looking down from under the hood, guess I'll jack the beer can squasher up and climb under it. Thanks man!
Old 09-13-2003, 08:56 PM
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he's right.
Old 09-13-2003, 09:05 PM
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Car: 88 formula WS6
Engine: 305 Lo3
Transmission: 700-R4
Yup! I jacked it up and there it was next to the oil filter. Took longer to jack it up, get the tools, jack stand, and creeper than it did to change the switch! Thanks for the info. :hail:
Old 10-19-2003, 06:57 PM
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Car: 88 formula WS6
Engine: 305 Lo3
Transmission: 700-R4
Got a FP tester today! Pump's bad! thanx for the info!
Old 10-25-2003, 06:38 PM
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Car: 88 formula WS6
Engine: 305 Lo3
Transmission: 700-R4
See post "fuel pressure gauge question urgent" on this board for results. U won't believe it!
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