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1997 infinity i30 keeps blowing out oil pressure switch

The oil pressure switch leaks when engine RPM goes above 2500. Checked oil pressure with gauge and found that RPMs over 2500 oil pressure is at 80 psi. I think yhe oil pressure relief is sticking but not sure.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

redgto046m
  • 10 Answers

SOURCE: Runs rough at low rpms. Misfires but goes away at about 2000 rpm.

Sounds to me like it could be a Mass Airflow Sensor issue. Or Air fuel mixture problem. Is the harness to the MAF and Trottle control sensors hooked up right? These are just simple solutions that may work. Check all of your fuses as well. One could be blown causeing you DLC not to operate. DLC =DATA LINK CONNECTOR. Find the fuse... read the code.... solve them problem! GOOD LUCK! hope this helps.

Posted on Dec 28, 2008

Mikey108
  • 475 Answers

SOURCE: OIL PRESSURE RELIEF VALVE

If cleaning the engine does not work, replace the oil press. sending unit. These senders on Jeeps have had a history of problems where they will work one day and not the next day.

Posted on Jan 27, 2009

ginko
  • 19396 Answers

SOURCE: oil pressure gauge reads 80 psi with engine off and pegs running

That is probably a defective oil pressure gauge or a broken oil pressure sender, it reads 80 psi just because that is the maximum value allowed.

Pressure can be verified by reading it with a gauge tool.
If you really have pressure over 70 psi when engine is running then start replacing the oil filter, and check that the oil lines from pump are not obstructed, if there is nothing in there then replace oil pump.

If instead the gauge reads 80 with engine off, that is a defective pressure gauge.

Posted on Feb 25, 2009

SOURCE: oil pressure gauge stays at top, about 80 psi, is this normal

80 is on the high side for those... possibly a sending unit issue

Posted on Apr 19, 2009

  • 75 Answers

SOURCE: oil pressure gauge goes to 80 psi when the truck key is turned on

chances are your sending unit is not bad. These dashes have had alot of problems with stepper motors failing in the instrument cluster. does it go to zero when key is off? is it erratic? changes where it sits when running and when off? These are all problems within the cluster itself. It is not cheap to take this to the dealer. THey will want to replace the cluster. these clusters can be repaired for half the cost if you know where to go. Not sure yet what the rules are on here but i can repair these for about 325 verses over 600 from dealer and then reproggramming costs! One other note. Chevy has a recall on these! call you local dealer and ask what the criteria is for the recall. You may be able to get it repaired for free if you meet the time frame and mileage requirements.

Posted on Feb 01, 2010

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2004 Sebring 2.7 runs good till heats up then will die. like fuel starved. the oil light starts to come on at 1500rpms then runs rough and have to keep engine rpm high.


If you need to keep your rpm above 1500 to keep the oil light from coming on, you need to have that checked RIGHT NOW. When the light comes on, oil pressure is at an absolute minimum. Check the oil level in your crankcase, and top it up if necessary. If you still get the light coming on, you may have a bad oil pump, excessive wear on bearings, or a bad oil pressure switch. Get it checked out or you are liable to blow your engine.

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I have a 2002 firebird v6 3.8 liter and my oil psi is @ 80 psi when driving but when I come to red light it goes down to 60 psi is that normal also when I take out my oil dipstick I get some white smoke...


when you drive the pressure should increase as the rpm goes up not strange at all for it to drop like that at a light . the pressure can change sometimes using different filters and oils too . normal oil to synthetic or also using a heavier grade so keep that in mind .

The dipstick should not be checked when running and that could be blowby from engine wear . but if checking when it is off and you get some fumes out after it has been running for some time then you have have some carbon buildup in the valve cover / intake . These fumes may not vent properly due to that buildup .

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Oil warning light ON can be caused by:
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- Faulty oil pressure sensor (pretty rare) or loose sensor connector
- Also heck the obvious like loose Oil Filler cap and dip stick seal.
Hope it heps and do not drive your car without resolving this issue first as you could easily blow the engine!

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1 Answer

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Does the oil light come on or the knock occur during the engine warm up after a cold start?
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You could also have excessive piston rod bearing, crankshaft bearing or cam shaft bearing wear that will cause oil pressure to drop too low to prevent the rod knock your hearing at 2500 rpm.
You said a knock and not a ticking noise,so I don't believe a lifter is the issue at 2500 rpm.
Start with the oil pressure check and go from there.
Let me know.
Regards,

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u Have a problem with the oil sending unit. The sensor is located beack right side of the engine block. Take out the switch and make sure u have good oil PSI. Should be 6 psi at idle and around 50 at 4000 RPM. If the presure is ok replace the switch they are very cheap about 20 bucks. Please rate.

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P2647 VTEC Oil Pressure Switch Circuit High Voltage - With Automatic Transmission Basicallly the sensor has gone bad or an oil passage has become blocked.

**. Locate the Variable Timing Electronic Control (VTEC) pressure switch on the end of the cylinder head. Honda has had problems with the VTEC oil pressure switch, there is an updated part number for the vehicle (37250-PNE-G01). On this vehicle the VTEC oil pressure switch can fail at any RPM.
2. The VTEC oil switch is normally closed, and grounds the reference voltage from the Engine Control Module (ECM) on the Blue/Black (BLU/BLK) wire. If the code sets at idle - 2500 RPM - and the Brown/Yellow wire has a good ground, then suspect a faulty VTEC oil pressure switch.
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Plugged Oil Passage
Insufficient Oil Pressure
Plugged Oil Screen
Insufficient Oil Volume
Malfunctioning VTEC Oil Pressure Switch
Defective VTEC Solenoid

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