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post #1 of 5 (permalink) Old 03-16-2009, 08:00 PM Thread Starter
 
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Oil Light issues

Hello all. My 2003 Intrepid 2.7l has developed an interesting issue.

My oil light flickers on when I am at a stoplight, but only after the car has warmed up all the way. It is not like this when I first start it up.

I have done an oil change about 100 miles ago. I also had the oil pressure switch changed out at the same time, thinking it was the cause of this.

But the issues still continue. When I am at a stop light or sign, I put the car into neutral and it is fine most of the time, but there are times that I have to rest my foot on the gas to keep the RPMs up above 800. I notice this issue when the idle is below 700 RPMs.

Can anyone clue me into what might be the issue? This is my main vehicle and I need it to get to work, and plus, I'm still paying on it...

So, I hope I can get to the bottom of this issue...
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post #2 of 5 (permalink) Old 03-16-2009, 08:08 PM
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I've had the same issue for close to a year now...I think its the "oil pressure sensor" or something going bad..
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post #3 of 5 (permalink) Old 03-16-2009, 08:17 PM Thread Starter
 
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I did some digging on google... Here is what I found...

NUMBER: 08-36-99
GROUP: Electrical
DATE: Oct. 15, 1999
SUBJECT:
Engine Oil Pressure Light Flicker
OVERVIEW:
This bulletin involves adding a terminal/wire/vent to the oil pressure switch connector.
MODELS:
1998 - 1999 (LH) Concorde/Intrepid
NOTE :THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 2.7L ENGINE.
SYMPTOM/CONDITION:
With a hot engine the oil pressure light may be on or flicker on at idle.
DIAGNOSIS:
Verify engine oil pressure as described on page 9-21 of the 1999 Concorde/Intrepid/LHS/300M service manual (Publication No. 81-270-9140). If engine oil pressure is within specification perform the Repair Procedure.
PARTS REQUIRED:
1 05017800AA Wire Terminal/Vent
REPAIR PROCEDURE:
1. Raise vehicle on a suitable hoist.
2. Remove engine oil pressure switch connector from switch.
3. Remove sealing dart from the empty cavity at the rear of the connector.
4. Pull terminal locking ring outward from front (switch) side of connector to gain access to terminal locking tabs.
5. Install wire terminal/vent, p/n 05017800AA, in place of the removed sealing dart. Slide locking ring back into place.
6. Attach the connector back on the oil pressure switch.
7. Spot tape the wire/vent to follow the harness towards the top of the engine compartment.
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post #4 of 5 (permalink) Old 03-16-2009, 09:50 PM
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Vent wire is not really needed. But you can do it. (I did it). I didn't buy the vent wire from the dealership cuz it cost like 20 bucks for a wire. I went the junk yard and cut off a oil pressure switch and used the wire in there as my vent wire.

The real problem behind this is that your oil pressure switch is leaking. If you fix it by replacing it with a good switch (buy the OEM not autozone or something), then the flickering will stop. Adding the vent wire will probably increase the life of that sensor. Not sure what the physics is behind it but it might be because of the heat.

Yiran Hu
graduate research associate
Center for Automotive Research
at THE Ohio State University

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post #5 of 5 (permalink) Old 03-17-2009, 12:04 AM Thread Starter
 
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Yeah the repair shop said it was leaking. But would a replacement one do the same?
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