Question about 1989 Jeep Comanche

1 Answer

My engine stalls intermittently. It appears to be a fuel supply problem. I've installed fuel pressure gauge that reveals that the pressure is steady, even when the engine stalls. What do I test next and how?

Posted by on

1 Answer

Will be more helpful if you describe in more details; how often and if is at idle or when driving?
if you suspect fuel,did you try fuel filter?

Posted on Oct 16, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

94 z28 chevy camaro fuel pressure check valve location and is there any other names for this item I recently installed a stock replacement fuel pump in my camaro I run 35psi which is low at idle unplug the...


do you mean the pressure relief valve, this is located normally on the low pressure or return side of your fuel rail, this is designed to maintain fuel pressure in your fuel rail constant, e.g. steady running requires steady pressure, acceleration requires increased pressure controled by engine vacuum, if it was on the supply line you can not regulate the pressure supplied to the injecters. stopped engine requires no pressure so the pump gets turned off with the ignitionf

Nov 27, 2013 | Cars & Trucks

1 Answer

Engine starts then stalls, is it the fuel pressure reg or injector(s)?


Generally speaking, too much pressure should not cause any problems. The injectors should be able to open and close. Its possible there is a blockage in the return line to the tank and that is causing the pressure or flow in the main line to drop but I doubt it.
Have you checked pressure with a gauge yet ?

Jul 13, 2013 | 1987 Nissan Pathfinder

3 Answers

My 1998 lumina stalls while driving


Connect a scan tool to the car and check for DTC codes. If the car stalls likely a check engine code is set.

Your friendly auto parts stores will provide this as a complementary service.

actron-scan-tool-kf1efhgzqwbyve0gxdkp2l1v-3-0.jpg

use-obd-scan-tool-to-fix-the-car - copy-kf1efhgzqwbyve0gxdkp2l1v-3-2.jpg

May 12, 2017 | 1998 Chevrolet Lumina

1 Answer

'05 ford escape - car won't start if fuel below 1/4 tank


Not sure about P0195, but P093 is for a problem with the fuel rail pressure sensor. The sensor could be faulty or it could be accurate when the fuel system is empty.
Your sending unit for the fuel gauge could be off. Can you check the amount of fuel it takes to fill the tank when the gauge reads half ? If the gauge is right it should take half of the capacity of the tank to fill it up.

Dec 06, 2012 | 2005 Ford Escape

1 Answer

I've had sender replace and all points between there and oil gauge verified OK and all the stepper motors on instrument cluster replaced but still get fluctuating oil pressure needle and warning s


If you check the oil pressure with a mechanical gauge and the pressure is steady, the problem would be in the gauge on the dash if you have replaced the sending unit and there are no problems with the circuit.
The mechanical gauge could verify a problem with the actual pressure in the engine.

Aug 22, 2012 | Cars & Trucks

1 Answer

When I crank up the car it want stay crank & when it do stay crank it goes u & down. What is the problem?


Hi,

Improve the Fixya.com experience for everyone by voting!

The steps I'm going to outline are the same as we use in my shop for hesitation, sag and stumble.

All of the tools required can be borrowed from AutoZone at NO COST!

Sensors:

  • The sensors can be checked with an OBD-II code scanner borrowed from AutoZone. Pay special attention to an TP (Throttle Position) warnings. The sensor can be manually checked for binding or sticking.
  • Check the Heated Oxygen Sensor (HO2S) found near the firewall and screwed into the exhaust manifold for signs of corrosion on the threads. That will cause a faulty ground.


Fuel System:

  • Check the fuel pressure with that fuel pressure gauge from AutoZone. You reading should be 40-45 PSI and holding steady.
  • Contaminated fuel is a constant problem and if the pressure does not hold steady, replace the fuel filter.



Additional Checks:

  • Make certain that the engine thermostat is functioning and is the correct temperature.
  • Make certain that the alternator voltage output is not less than 9 volts nor more than 17 volts.


Here's a little general information that will assist you in comprehending the readouts from the code scanner. This is simply for your edification. You may be aware of all this but we've never done business before and all assumptions are off the table.

For an engine - make that any engine and irrespective of manufacturer - to run, you need three things to happen inside the engine, compression, fuel and ignition, without any one of these components the engine will not run.

  • Compression - Engine compression caused by crankshaft rotation and pistons moving up and down inside the engine block. If the timing belt or timing chain fails it will cause the camshaft to become out of correlation with the crankshaft or allow the camshaft to stop rotating. Either of these conditions will cause the engine to lose compression and sometimes cause internal engine damage.
  • Fuel Delivery System - The fuel system includes: fuel pump, fuel injectors, pressure regulator, fuel filter and pressure lines. This system is used to supply fuel under pressure to the fuel injection system, the lack of fuel pressure or volume will cause the fuel delivery system to fail and the engine to stall or not start.
  • Ignition Spark Delivery System - The ignition system components include: spark plugs, spark plug wires, distributor (if applicable), crankshaft angle sensor, camshaft angle sensor, ignition coil, ignition module, knock sensor and PCM (powertrain control module). The engine relies on the ignition spark to be delivered to the combustion camber at the correct time. If the ignition spark stops or is delivered at the wrong time the engine will not run or run poorly.

The Wells Company offers extensive code diagnosis application information and technical support via its Tech Line at 1-800-558-9770, as well as in-depth product and repair videos at www.repairpath.com (use mny personal access code carrepair) and through the "Wellstech" channel at www.YouTube.com

Ben

Jun 13, 2011 | 2000 Ford Escort

1 Answer

1985 cabrio stalls at about 1 hour into my commute


hi,

put in on a vacuum gauge and watch it untill warm up. the gauge should be steady all throughout the idle and when you punch it. sounds like an intermittent vacuuum leak. listen for hissing in the engine comparment. put it on a scanner if it keeps it up. its time for new vacuum lines.

jm

Dec 03, 2009 | 2005 Volkswagen Microbus

1 Answer

Appears that fuel pressure is lost occassionally to the engine and will not start, could this be an intermittent problem with the fuel pump relay?


very possibly yes....could also be a mechanical leakdown on the pump itself in the tank....best test would be to do a mechanical pressure gauge and see the fuel pressure drop with applied power to it or not

Nov 14, 2009 | 1999 Mercury Cougar

1 Answer

2000 Chevy blazer this is the 2nd brand new fuel pump I've replaced in 2 weeks,It runs a hour or two, Then sitting all night won't work in the morning.Same thing the first time . I've checked fuse ,...


Spark......EQUIPMENT NEEDED: 1) fuel pressure Gage....Advanced Auto = $45..... 2) needle nose pliers ( fuse pull )..
There is a fuel pressure access valve located on the fuel injector rail. The access port or "shraider" valve has a black or gray screw on cap. Remove the cap and you will see the valve. CAUTION: The fuel rail is under pressure....before installing the pressure gauge, relieve pressure by starting the engine and removing the fuel pump fuse from the under hood fuse box......
Once the engine quits, turn the key to the off position and safely install the pressure gauge. Put a rag around or under the access valve to catch any drizzling fuel. I always prefer to do this when the engine is cool.
Install the pressure gauge, start the engine, check for leaks and read pressure output at idle, record pressure reading.
Also, it should be checked under load but you will need another person to help.
Once you have shut the vehicle off watch the pressure gauge, it should remain steady and not leak down.
Let me know what the readings are.
Regards,

Feb 13, 2009 | 2000 Chevrolet Blazer

1 Answer

1998 Pontiac Sunfire won't accelerate


I assume that you do not have a "check engine" light?

The next thing I would do is check the pressure from the fuel pump. You can have this done at your preferred garage, or by purchasing a fuel pressure gauge from any parts store.

Vent the fuel tank vapors by loosening the fuel cap. Remove the electric fuel pump fuse and start the engine. Allow the engine to run until it runs out of fuel and stalls. After spinning the engine over for a period of 3 to 5 seconds, turn off the ignition switch and install the electric fuel pump fuse. Next, install a fuel pressure gauge in the fuel rail supply line, and secure the fuel tank cap. With the ignition key in the on position, verify that no leaks are present and start the engine. Visually verify the PSI reading on the gauge. The pressure for your vehicle should be 41-47 PSI (Pounds per Square Inch). Hope this helps and good luck!

Jan 13, 2009 | 1998 Pontiac Sunfire

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

101 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

71043 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6981 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...