I am told that this is on the same part as my fuel pump. Where is this 'switch' located, and what does it look like? Anybody have any pics of it? Also... is there another name for it?

Thanks a TON!

ZachS

 

There is an oil pressure switch that keeps the fuel pump running in the event of a fuel pump relay failure (as long as there is oil pressure). Is that what you're talking about? If so, mine is on the back of the block, near the distributor. A real pain to get to.

 

I dont have on my 92 Z ! Weird...

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92 Z28 L98 350
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Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires...

"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)

 

actually the one the sending unit for the gauge is back by the distributor, and the switch for the fuel pump is down by the oil filter.

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87 IROC-z 305 TPI
Borg Warner T-5 fresh rebuild
10-bolt 3.73 Richmond gears rebuilt GM posi,
formerly BW 9-bolt w/3.45 gears(broke it)
Ported Plenum and Runners Homemade AFPR
ACCEL 8.8 wires, High output coil,and cap & rotor
Bosch platinum + 4 plugs
Ram Air w/ K&N filters,
MAF sensor screens removed, TB coolant bypass
Polyurethane tranny and torque arm mounts
No Cat, Dynomax Headers & catback w/custom tips
K&N oil filter,Mobil 1 synth,Factory Oil Cooler, Futura GLS Super Sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims.

406 siamesed TPI in progress

 

Actually it depends what year and engine your car has. Blade is right that he doesn't have a sending unit by the distributor. On all 91-92 TPIs the sender by the oil filter has 3 wires going to it and runs both the guage and the fuel pump. I think they changed it in 90, but I'm not for sure.

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91 Z28
Come see The Vicious...

 

Sooo it took you exactly a year, 1 hour and 25 minutes to respond to this topic huh... lol

 

My 92 RS TBI car has the three wire,sensor/switch above the oil filter.The only thing behind the distributor is the line I connected to the mechanical gauge.
Just FYI.
-Rich-

 

Since this topic was brought back to life, i might as well try to get a question answered.

My fuel pump is running off. I.e, when the car is not running, it keeps going. (nothing outlasts the energizer.. err sorry).

Anyway. I was under the impression that, the
oil sending switch would _KILL_ the pump if there was no more than 5lbs oil pressure.

-- Joe

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1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters,
Summit 1.5 roller rockers, World Products Sportsman II 2.02/1.60 heads, Edelbrock TPI Intake,
Cloyes Double Roller timing chain, Mellings oil pump: 13.5 @ 100.23 MPH

Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs F/P gauge, A/F ratio gauge, MSD 6AL, MSD Redline selector.

http://www.joesperformance.com