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My 94 wrangler will run for 10 minutes or so then cuts off ...
Sent to Car Experts May 23 01:09 AM

My 94 wrangler will run for 10 minutes or so then cuts off and wont start again for several hours or even days.

 

Optional Information:
1994 Jeep wrangler 4.0

Already Tried:
After it cut off i checked the fuel at the fuel filter and when turning over the engine, fuel was flowing. I also replaced the battery.

Customer (name blocked for privacy)
Status:  Closed   Value: $15
Answer
May 23 1:14 AM (5 minutes and 9 seconds later)
         
REPLIEDCheck Mark
Have you checked the fuel filter? That will cause this problem.

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ase_master327 -- Shop Owner - 11 Years -- 100% Positive Feedback on 719 Car Accepts
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May 23 1:18 AM (3 minutes and 17 seconds later)
         
Reply to ase_master327's Post: The fuel filter was replaced not too long ago. I took the fuel line off in front of the fuel filter and it was flowing freely when cranked.
Customer (name blocked for privacy)
Answer
May 23 1:25 AM (6 minutes and 56 seconds later)
         
REPLIEDCheck Mark

Do you have an engine light on?



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ase_master327 -- Shop Owner - 11 Years -- 100% Positive Feedback on 719 Car Accepts
Many years of experience with all types of vehicles. Look at my feedback, it speaks for itself.
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May 23 1:26 AM (1 minute and 21 seconds later)
         
Reply to ase_master327's Post: There is an engine light but it is not on.
Customer (name blocked for privacy)
Answer
May 23 1:38 AM (11 minutes and 44 seconds later)
         
REPLIEDCheck Mark

Ok you could have a number of problems.

Check for spark, damaged or damp ignition components, etc...

Ensure proper fuel pressure here are directions on reading and adjusting fuel pressure. Also, check for signal to the injectors with the noid light.

Images available only to Customers.
TBI pressure test port plug


Images available only to Customers.
TBI pressure adjustment


The fuel system on vehicles equipped with Throttle Body Injection (TBI) is only under pressure when the fuel pump is operating. As long as the fuel pump is not operating, the TBI fuel system components can be removed without the need to release the fuel system pressure.

Fuel pump operating pressure is 14.5 psi (100 kPa). The fuel pressure regulator is adjustable by means of a Torx® head screw on the bottom of the pressure regulator.

  1. Remove the air cleaner assembly. Remove the screw test port plug on the throttle body, then install a fuel pressure test fitting. Pressure test fittings are available at many auto parts stores.

  2. Connect an accurate pressure test gauge to the test fitting.

  3. Connect a tachometer to diagnostic connector terminals D1-1 and D1-3, then start the engine and accelerate it to 2000 rpm.

  4. Read the fuel pressure on the gauge. If necessary, turn the adjustment screw on the bottom of the fuel pressure regulator to obtain 14.5 psi (100 kPa) of fuel pressure. Turning the screw inward increases the pressure and turning the screw outward decreases the pressure.

  5. Once all adjustments are complete, install a lead seal ball to cover the regulator adjusting screw. Turn the ignition OFF, then disconnect the tachometer and remove the fuel pressure gauge. Install the original plug screw into the throttle body, then install the air cleaner assembly.



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ase_master327 -- Shop Owner - 11 Years -- 100% Positive Feedback on 719 Car Accepts
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May 23 1:43 AM (5 minutes and 51 seconds later)
         
Reply to ase_master327's Post: I will check those things. Have you herd of a cam timing sensor or map sensor on the wrangler? If so, will that cause these problems? I had a friend tell me to check that out as well.
Customer (name blocked for privacy)
Answer
May 23 2:01 AM (17 minutes and 36 seconds later)
         
ACCEPTEDCheck Mark

If these things were bad, the engine light would be on. Check the codes also while you're there.

follow this link for detailed instructions and code meanings.http://www.troublecodes.net/chrysler/

Then come back & post the codes, if you still need help.Images available only to Customers.



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ase_master327 -- Shop Owner - 11 Years -- 100% Positive Feedback on 719 Car Accepts
Many years of experience with all types of vehicles. Look at my feedback, it speaks for itself.
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May 23 2:04 AM (3 minutes and 3 seconds later)
         
Reply to ase_master327's Post: Thanks a lot. You have been a big help. Have a good night.
Customer (name blocked for privacy)
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