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Forum: Troubleshooting/Problems 06-23-2015, 04:02 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

On my list: water pump, rad cap, and thermostat. I just can't figure this out. I filled it though the rad cap and burp plug and added a 50/50 mix of coolant and filtered water to the expansion tank...
Forum: Troubleshooting/Problems 06-23-2015, 01:36 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

I just got back from a 1400 mile round rip. CEL cam on with a 0300,0303,0306,0307 plus 3 miles from home had to toe home because it overheated. The overflow or expansion tank was overflowing and...
Forum: Troubleshooting/Problems 06-11-2015, 05:55 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

I'm reasonably comfortable with everything pointing to the fuel pump and will replace it along with the sending unit (fuel gauge will only register 8/10th when full) in the next couple of months....
Forum: Troubleshooting/Problems 06-11-2015, 04:15 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

We are of like minds on the fuel pressure test equipment. I asked 4 clerks at AutoZone those very questions and got "uh I'm not familiar with that." So the answer is I don't know if the test equip is...
Forum: Troubleshooting/Problems 06-11-2015, 02:24 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

Here is the results of the fuel pressure test: 53 psi (good), flow rate at idle is 4 oz at 15 seconds and at 3000 rpms the same. the fuel pump, according to the manual should pump 16 oz per 15...
Forum: Troubleshooting/Problems 06-11-2015, 10:23 AM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

One other fact, the check engine light flashed several times during the test but went out without a code. The 3 turns of the key showed "done."

Although the stealer said they checked the fuel...
Forum: Troubleshooting/Problems 06-10-2015, 09:25 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

The fuel filter made no difference :mad: but I tested it 4 or 5 more times. When I hold the gas to the floor and keep it there even after it starts to lose power, it seems to lurch forward a bit like...
Forum: Troubleshooting/Problems 05-30-2015, 04:34 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

Thanks! I'll give it a shot but before I do, I will have another pressure test to narrow it down to the filter/regulator or fuel pump or possibly neither.

Will post the results.
Forum: Troubleshooting/Problems 05-30-2015, 02:31 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

That was quick, thanks. I'm OK with the price (~$50.00) but having to drop the gas tank is a problem. Some of the info has it out side the tank and some have it in the tank. I have a 2002 GCL 4.7 V8,...
Forum: Troubleshooting/Problems 05-30-2015, 01:10 PM
Replies: 20
Views: 341
Posted By DonGreen
Re: mis-fire codes but does not mis-fire

Thank You! Your reply describes the loss of power exactly but given that it seams like a fuel problem and the stealer OKed the fuel pressure, How would you test the pressure or fuel flow when the...
Forum: Troubleshooting/Problems 05-29-2015, 04:42 PM
Replies: 20
Views: 341
Posted By DonGreen
mis-fire codes but does not mis-fire

The symptom started when I was traveling at ~60 in a 70 mph zone and pushed the gas to the floor in order to pass a slow moving truck going up a steep incline and get back up to speed. Jeep down...
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