Question about 1986 Chrysler LeBaron

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Well its like i have an oil leak when im running on the freeway my oil pressure goes up and temp goes down but when i stop my oil pressure goes down and my temp goes up???...what could this be a valve cover leak is what i was thinkin...

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Valve cover leak (oil) will not cause this problem, what needs to be checked is your radiator cooling fan, more then likely not working, that's why when your going down the freeway it don't over heat, you have air going through radiator, but when at stop, no air going through radiator to cool coolant before it goes back through engine, starts to get hot, and oil will also thin out, and have low oil pressure, check cooling fan's or fan, for voltage, should have voltage at normal oper. temp. about 210 - 220 deg., if you do have voltage and fan are not on, replace fan motor.

Posted on Sep 08, 2010

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High temp low oil pressure light comes on after driving for a few minutes, then off when engine at driving rpm. At stop light (idle or low rpm) light comes back on. Normal driving it goes out.


You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

Jul 06, 2015 | 2003 Ford Expedition

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2004 hyundai elantra.. car had coolant leak the other day and temp gauge went past red lines. Leaking out the passenger side front of car, round piece with hole in it.. bf put stopleak in it and filled...


Let's go over a list of things here and get everything organized. Most cars have an "open" coolant system, meaning that if it gets too hot (thus increasing the pressure inside the coolant system), the reservoir or radiator cap will open up and allow that pressure to release, or the coolant to expel - which would cause you to spill coolant.

After it cooled down, you were able to drive it for 70 miles - presumably on the highway/interstate/freeway, or another road that may not have a whole lot of stopping.

Then you started driving in town, most likely with stoplights or stop signs. The car overheated then and you weren't able to get it restarted (which is normal and is a safety feature on a lot of cars).

Fluids are good, the fan is kicking on, and the belts haven't broken.

Okay, so you actually did a pretty good job narrowing this down (assuming I didn't miss anything). The car is doing it's overheating when you're in stop and go traffic, with low airflow. If you are running your air conditioning, try turning it off and see if that keeps you from overheating (assuming the car starts now). If it does, then chances are your fan isn't kicking into high-speed. On some vehicles, you have two fans, on others you only have one. If you have two fans, one will only kick on when the AC is running. If you have one fan, it should have two speeds. A low-speed for simply cooling the engine, and a high-speed for when the AC is running.

If you don't overheat when the AC is running, check your relay box under the hood and search for a relay that should be labeled something along the lines of "Fan 2", "Fan High", "Fan AUX", or "Fan AC". If you find one, replace it or try switching it with another relay. Good luck!

Jun 02, 2014 | Cars & Trucks

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2008 ford expedition air conditioning problems


the ac pressure depends on the gas in use
r314 runs at high pressures
overheating at slow speeds indicate an inefficient coolant fan and the high ac pressures indicate that the condenser fan also is not operational
if it has a viscous fan hub , replace the fan hub
if it has electric fans check / the fans, fan relay , fuses , coolant temp sensor

May 07, 2017 | 2008 Ford Expedition El

1 Answer

Why does my 1995 Ford Ranger 2.3l 5spd backfire and sputter in AM (Not a cold Temp)? 217,000 miles. I maintain oil and proper maintenance. Burns some oil. After I give it some gas it eventually idles...


Hello and welcome to Fixya.com
have you run a fuel pressure leak down test? if not you need to do this test, borrow or buy a fuel pressure test gage, they are about $12 at Kragen, the fuel pressure test port is on the top of the engine in the fuel rail that goes over the injectors, looks like a tire valve, hook up the gage and verify you have no leaks, then start the engine and turn if off while watching the fuel pressure, the pressure should not bleed down by more than 5 pounds after engine stops running, if it quickly looses pressure u will need to replace the fuel pump, this is called a leak down test, fuel pressure leak down is the #1 cause of hard starting rough running cold, other things cause it as well like a loose timing belt and worn out plugs and dirty fuel injectors, and worn engine parts, but start with the leak down and then go from there.

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1 Answer

Oil pressur low


I have just cured my low oil pressure (and leaks) by using a stop a leek additive from e-bay. LUCAS engine oil stop a leak. £14.99($22 approx)
It takes a while too get it in the engine as it is extremely thick, but works very well. It evens stopped the slight noise from the oil pump.

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1 Answer

OIL PRESSURE SWITCH CHEVROLET 4.3 1994 SONOMA /S 10


hook up a mechanical gauge and verify the pressure at idle is correct, I suspect the sending unit is defective

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1 Answer

94 jeep grand cherokee oil pressure and engine temp?


I'm guessing your engine is'nt making any tapping noise with the low oil press.
Your oil pressure sending unit is most likely the culprit.
Is your car smoking when the temp. goes up?
You engine could be air bound or thermostat could be opening too late (might need new one).
PLEASE DO NOT OPEN THE RADIATOR CAP WITH A HOT ENGINE.

Oct 05, 2008 | 1994 Jeep Grand Cherokee

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