2.0 CRD Engine Oil Light/Brake Pedal problem - Jeep Patriot Forums
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post #1 of 2 (permalink) Old 06-25-2019, 05:22 AM Thread Starter
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Join Date: Apr 2019
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2.0 CRD Engine Oil Light/Brake Pedal problem

There isnt alot of info I can find on these 2.o Patriots!! SO the red engine oil light came on and was intermittent for a bit then stayed on. Almost in conjunction, the brake pedal went hard.

I cut it off, gave it a second and restarted the engine. No light. Revved it up, no light.

Oil level is fine.

I started to drive it and as soon as it got above 2k revs...same exact thing.

Any ideas? Are they related?
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post #2 of 2 (permalink) Old 06-25-2019, 03:38 PM
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Join Date: Dec 2009
Location: Ontario
Posts: 715
Lot's of causes for a low oil pressure warning light. Sensor issue, plugged pickup tube, collapsed oil filter, sludge in oil galleys or actual oil pump failure.

You need to find the oil pressure specs for specific engine rpm, there's usually a plug that's removed on the engine to tap into to get oil pressure readings on a gauge. If it's low you have a mechanical issue. No change then you'll have to look at electrical.

Power brakes are powered by a vacuum pump, look at that system, they may not actually be related although oil pressure failure may cause the pump to seize, I don't remember if the pump is part of the engine or separately driven.


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