Question about 1996 Jeep Grand Cherokee

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At idle in neutral oil pressure good.In drive oil pressure plummets to O.4liter 6 cylinder at idle

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Jeep is known to have faulty oil pressure switches,check that first,if it's good then you have a weak oil pump.










TIM.........

Posted on Oct 23, 2010

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85 ford f150 302 v8 2val carb stall when put in gear


How long since a tune-up? Have you checked the timing? How many miles on engine? How is your cylinder compression?
There isn't much load on engine in park or neutral. When you put it in gear, there is a load on the engine. With carbed engine 6--8 psi fuel pressure. Crub idle in drive, 575 rpms. With a high mileage engine, that idle speed may not work. Is there an idle screw on the carb, where you can up the idle to keep it from stalling, in gear? Of course if you do that, when you put it in park or neutral the idle is going to go high, I know it's a pain. If your engine is in poor shape, your probably going to have a tough time, getting it to run correctly. Just my opinion.

May 17, 2018 | Ford Cars & Trucks

1 Answer

Losing oil pressure when at idle. pressure is fine when driving


A comparatively quiet engine is often a worn out engine.( Much of the knocking sound in an engine is caused by compression and expansion of gasses, which in a worn out engine is reduced due to leakage of gasses beyond the piston rings or valves.)

You will first have to have the engine pressure tested on each cylinder to ascertain the overall condition.
Usually there are one of two reasons for a low oil pressure warning light or gauge reading.


No.1: The engine is badly worn and oil pressure can leak beyond the piston rings and into the cylinder.


No.2: The oil pump is close to failing or has already failed.


There is also the slight possibility that both of these faults have occurred at the same time.

Nov 04, 2012 | 2001 Jeep Grand Cherokee

1 Answer

2005 Ford Escape, 6-cylinder - When at idle, approx. 800 rpm, the oil light comes on. If I increase the rpms the light goes off. It does not come on while driving.


The light appears because the oil pressure generated by the pump is below the limit. If the light appears only at idle and the level of the oil in the carter is good then the oil pump is worn out and it's starting to show it. You must replace the pump.
For that the engine will have to be taken off the car and that is a job for a service shop - take your car to one.

Mar 30, 2011 | Ford Escape Cars & Trucks

1 Answer

Hi. As I was driving my 1999 GMC Jimmy V6 4.3L to class today, my oil pressure gauge suddenly plummeted to nearly zero and I was unable to accelerate up a hill. The acceleration from a stop light was even...


It's a possibility that your oil pressure sensor could be bad. You can replace it and see if it works again but It sounds to me like your oil pump failed which starved your bearings of lubrication and caused them to fail. Odds are that you'll need an engine rebuild or to install a used engine. I'm sorry and I hope this helps.

Feb 28, 2011 | 1999 GMC Jimmy

1 Answer

Tourqe specs for 2.8 liter motor.


Camshaft Sprocket: 15-20ftlbs
Camshaft Rear Cover: 6-9ftlbs
Torsional Dampener: 67-85ftlbs
Exhaust Manifold: 15-23ftlbs
Water Pump: 6-9ftlbs
Thermostat Housing: 15-23ftlbs
Intake Manifold: 23ftlbs
Timing Chain Dampener: 14-19ftlbs
Rocker Arm Cover: 6-9ftlbs
Rock Arm Nuts: 15-20ftlbs
Oil Pan: 15-23ftlbs(M8 Bolts) 6-9ftlbs(M6 Bolts)
Main Bearing Caps: 63-83ftlbs
Connecting Rod Main Cap: 34-40ftlbs
Cylinder Heads: 33ftlbs(+ an additional 1/4 Turn)
Engine Mounts: 34ftlbs
Oil Filter Adapter to Engine: 34ftlbs
Oil Filter Adapter Bolt: 63ftlbs
Oil Pressure Switch: 10ftlbs
Oil Pump Drive Bolt: 25ftlbs
Oil Pump Mounting Bolts: 30ftlbs
EGR Valve: 19ftlbs
EGR Tube Nut: 19ftlbs
Fuel Line Nuts: 17ftlbs
Fuel Rail Attaching Bolts: 88in.lbs
Fuel Rail Inlet Fitting: 35ftlbs
Fuel Rail Mounting Bracket: 28in.lbs
Fuel Rail Outlet Fitting: 30ftlbs
Fuel Pressure Connector: 88in.lbs
Fuel Pressure Regulator Bracket: 28in.lbs
Idle Air Control Valve: 30in.lbs
Idle Air/Vacuum Signal Housing: 30in.lbs
Intake Air Plenum Bolts: 16ftlbs
Thorottle Body Attaching Bolts: 18ftlbs
Throttle Position Sensor: 18in.lbs
Crankshaft Sensor: 71in.lbs
DIS Assembly to Block: 15-22ftlbs
Knock Sensor: 14ftlbs

Dec 15, 2010 | 1989 Chevrolet Celebrity

1 Answer

Need to know what the proper oil pressure when idling and driving for 1994 jeep grand cherokee 6 cylinder 4.0 lt


the pressure will vary, You'll be approx 20 psi at an idle and 45 psi @ 2500 rpm's. If the car has a lot of miles, you can expect slightly different readings. As long as your reading, I would not worry about it. Also when the engine is cold, you'll always have a higher reading until the temp rises to normal.

Jan 21, 2010 | 1994 Jeep Cherokee

2 Answers

Low oil pressure


If the engine is not making any noise.It is probably the oil sending unit that is defective.If you want to be sure you will have to install a pressure gauge and check the pressure when the vehicle is at normal operating temperature.If it is above 10 psi then replace the sending unit.It is located on the back of the motor on the block by the left cylinder head.You might need a special socket for it.Hope this helps.Good luck.

Jan 12, 2010 | 2004 GMC Yukon

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