RDOG
Joined:
Jun 2001
Ontario. California U.S.A.
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Well, I have been trying to figure out why my automatic Turbo TC's oil pressure gauge has been reading low and when I rev it it drops to zero. I replace the IVR and no change. I replaced the ignition switch and no change. So then I attached a mechanical oil pressure gauge and it reads 20psi and then when i rev it ,it drops to zero and stay there at zero
I have no water and oil mix on dipstick, BUT I did "possibly see' freon drip out of the rear exhaust manifold bolt. I first thought it was coming from the heater core line but it seems to be coming out of the manifold bolt.
Could a cracked head show low oil pressure? Could a a blown head gasket show low oil pressure? Do I just need to call it a day and pull engine?
1986 Turbo Coupe. Boport StageIII head, Boport 2.1, Performance Techniques 50 trim hybird, StageII.63, stinger 3" exhaust, Phenolic spacer, Boglog header,NPR FMIC intercooler setup, kirban fpr, bigrmotorsports fuel rail, diablo water meth kit, CAI, remote mount TFI, CHE rear adj control arms, MAC girdle, 8.8 rear disc, aluminum drive shaft, H&R lowerings springs Tbird Turbo Specific, y MAS!!
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Not B Anymore
Joined:
Apr 2001
Nokesville, VA, USA
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I think it's time to pull the head. Or maybe as a check, pull the dizzy and spin the oil pump with a drill to double check.
By the way, why are you putting freon in your radiator? :dunno:  tickpoke: :giggle:
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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5.0TurboCoupe1988
Joined:
Apr 2008
Broken Arrow, OK
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it could be any of those things, except i would rule out the oil pump because of the anti freeze issue. it could also be a cracked block. as mentioned, pull the head and have it checked out.
1988 TC 2.3/5-Speed, 148K
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RDOG
Joined:
Jun 2001
Ontario. California U.S.A.
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I've never tried spinning the oil pump with a drill. How is that done? Do I have to add some kind of attachment to the drill?
1986 Turbo Coupe. Boport StageIII head, Boport 2.1, Performance Techniques 50 trim hybird, StageII.63, stinger 3" exhaust, Phenolic spacer, Boglog header,NPR FMIC intercooler setup, kirban fpr, bigrmotorsports fuel rail, diablo water meth kit, CAI, remote mount TFI, CHE rear adj control arms, MAC girdle, 8.8 rear disc, aluminum drive shaft, H&R lowerings springs Tbird Turbo Specific, y MAS!!
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5.0TurboCoupe1988
Joined:
Apr 2008
Broken Arrow, OK
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i use the center shaft of an old distributor chucked up in a drill.
1988 TC 2.3/5-Speed, 148K
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Not B Anymore
Joined:
Apr 2001
Nokesville, VA, USA
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5.0TurboCoupe1988 Wrote:i use the center shaft of an old distributor chucked up in a drill.
What he said^^^
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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