Just a question on my 1995 Grand Cherokee? - JeepForum.com

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post #1 of 18 Old 03-18-2013, 02:48 PM Thread Starter
ombus
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1995 ZJ 
 
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Location: olivehurst
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Just a question on my 1995 Grand Cherokee?

My 1995 Grand Cherokee is acting up this week. After about 30 miles of driving it. The truck starts to slow down on its own. I push the gas and it just bogs down. After shutting the truck off for a few hours its fine for another few miles and happens again. Any help would be great. The engine sounds fine. It just feels like someone is pushing the brakes.

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post #2 of 18 Old 03-18-2013, 03:17 PM
Earlk
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1994 ZJ 
 
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Check fuel filter. I had that problem on a Fxxxxxxxxxxd pickup I once owned.

94 v8 ZJ totally stock,
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post #3 of 18 Old 03-18-2013, 03:25 PM
newfieZJ
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Without many details , I'd say a bad cat
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post #4 of 18 Old 03-18-2013, 04:59 PM
PolkaPower
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Sounds like it's getting choked out like said above.
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post #5 of 18 Old 03-18-2013, 05:08 PM Thread Starter
ombus
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Thank you I will put on a new cat converter , fuel filter, and see how it does. Im in california is there a special one for the emissions here? Any numbers or words im looking for on it?
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post #6 of 18 Old 03-18-2013, 05:18 PM
newfieZJ
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Cali cats are not cheap . Try the fuel filter first and see how that goes . If you need a cat , contact Kolak for the best deal
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post #7 of 18 Old 03-18-2013, 08:17 PM
PolkaPower
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Oxygen sensor maybe? Check that too. Don't go tossing parts at it these are just ideas to check first not to replace. Yo know how long it's been since the O2 sensor has been replaced right? Is the Cat original? How may miles on these parts?
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post #8 of 18 Old 03-18-2013, 09:11 PM Thread Starter
ombus
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The cat is original and so is the O2 sensor. The mileage is 194,000 The muffler is new. I unbolted the muffler today and the cat is completely empty. Its hollow inside. I bought this jeep 1 month ago. It passed all California smog. I dont drive it everyday just when its bad weather.

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post #9 of 18 Old 03-18-2013, 09:46 PM
newfieZJ
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Wow . I can't believe it passed with a hollowed cat . I'd definately toss a new fuel filter on it and then run a pressure test to see how healthy the pump is if the filter doent do the trick .

Btw , mods get anal about removal or modifying emmisions equipment due to federal laws . Legally you should replace it however you now have a good arguement since it passed the strictest emmisions testing in the US . What do the feds know right ?
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post #10 of 18 Old 03-18-2013, 10:33 PM Thread Starter
ombus
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The truck was sitting for about 9 months as well. So the empty cat wont affect anything with the sensors? Does it need a new O2 sensors ?Theres no check engine lights everything runs fine. Prolly gas is no good and fuel filter needs changed. I thank you for all your help.

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post #11 of 18 Old 03-19-2013, 04:33 AM
newfieZJ
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question 1 , no , question 2 , no . It certainly sounds more like a restricted fuel delivery issue . Post back on how a new filter works for you
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post #12 of 18 Old 03-19-2013, 05:19 AM
ratmonkey
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I would start with unplugging the o2 sensor and taking it for a long drive.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #13 of 18 Old 03-19-2013, 10:19 AM Thread Starter
ombus
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I unpluged the O2 sensor. Check engine light has come on. Still does the same thing at about 30 miles. The engine runs great. At about 55mph the truck seems to just start slowing down. I push the gas pedal all the way down and the truck just slows down. I turn it off the air lowers the truck down and its fine for another few miles. I changed the fuel filter also.

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post #14 of 18 Old 03-19-2013, 10:22 AM Thread Starter
ombus
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The idle guage will be at 6000rpms and the truck will go really slow. Untill I shut it off for a few then its fine again. For about another 30miles.

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post #15 of 18 Old 03-19-2013, 10:27 AM
Nick05
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when was the last time it had a tune up?
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