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post #1 of 5 (permalink) Old Apr 18th, 01, 07:34 AM Thread Starter
 
Join Date: Jan 2001
Location: Manhattan, KS, US
Posts: 17
Question

I have a 1985 Camaro Z28 and once the car reaches an idle speed between 500-700rpm the oil pressure drops and the car just dies. I refered to Chilton but couldn't find anything in there.

Ryan
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post #2 of 5 (permalink) Old Apr 18th, 01, 10:21 AM
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Join Date: Dec 2000
Location: Monroe, WA, USA
Posts: 312
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on newer car's with FI you have a oil presure cut off switch for the fuel pump.

you eather have a bad switch/sensor or a oil presure problem. i hope it is just a sensore/switch! because a low oil presure problem normaly mean's time to freshen up a motor.

the sensore/switch is mounted on the back top side of the block behind the disributor normaly. it can also be at the oil presure tap hole just above the oil filter on the side of the block.

hope this help's ya out!
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post #3 of 5 (permalink) Old Apr 18th, 01, 01:13 PM Thread Starter
 
Join Date: Jan 2001
Location: Manhattan, KS, US
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Post

Thanks ilbl8. I gave the engine a tune up a couple days ago hoping that would fix the problem but it didn't. Would I have to remove the distributer to get to the switch?

Thanks
Ryan
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post #4 of 5 (permalink) Old Apr 18th, 01, 01:47 PM
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Join Date: Dec 2000
Location: Monroe, WA, USA
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well acording to the shop manual no, but it make's it easyer to do with the distributor removed. experiance here... . you will probably have 2 sensor's off a "T" fitting. the big one is normaly the oil presure sending unit, the small one is the presure cut off switch.

when you get into it you will see what i mean. the cut off switch interupt's the power to the electric fuel pump if your oil presure drop's below about 4 or 5 PSI. you need to put a mechanical oil presure gage on to see if your oil presure is getting that low, cause if it is you have porblem's in the oil pump high presure bypass or your bearing's are very worn out.

you need to troubleshoot the problem. do not just change out sensor's. at about $20.00 for each sensor you could drop $40.00 to do both and still have the problem. plus the work you do to change them that is worth something ya know.

if the oil presure line tap above the oil filter is not being used hook a mechanical gage up to it there. and find out for sure you have good oil presure.

it will be pluged with a pipe plug. i belive it is a 1/4" pipe thread plug.

hope this help's buddy!
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post #5 of 5 (permalink) Old Apr 18th, 01, 02:32 PM Thread Starter
 
Join Date: Jan 2001
Location: Manhattan, KS, US
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Thanks a lot! This will help out a lot.

Thanks,
Ryan
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