Question about 1988 Jeep Wrangler

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Rough idle, gas fumes, sputters while driving

1988 jeep wrangler 2.5 ,fuel injected throttle body. rough idle at 800 rpms, strong gas fumes, when I gas to 1000 rpms it runs better, sound like it is surging when in idle, When driving it sputters and hesitates, Have changes the fuel filter, fuel injector, throttle body postion sensor, plugs, wires, dis. cap, coil. Compression is fine. Any suggestions. Thanks

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  • 22 Answers

You have an air leak around the throttle body

Posted on Sep 21, 2017

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Posted on Jan 02, 2017

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  • 6982 Answers

SOURCE: jeep wrangler stalls out

check idle air control, tps & map sensor. As usual with electronics, test test test before buying anything/

Posted on Feb 18, 2009

volvo2103
  • 122 Answers

SOURCE: 2005 Jeep wrangler w/rough idle and hesitates when you accelerate

try fuel injectors....run a bottle or two with full tank through it and see if that dont solve the problemo.....

Posted on Feb 01, 2009

  • 188 Answers

SOURCE: 1988 jeep wrangler idoling rough

It does sound like a vacuum leak. Get a can of WD-40 and start spraying around the carb. It will rev up, and U can pin point the loose vacuum hose, are crack vacuum hose.

Posted on Feb 14, 2009

  • 6982 Answers

SOURCE: 1998 Jeep grand Cheroke hard cranking, sputtering, rough idling

In READING what you wrote, it appears that your car is difficult to start and pretty much is rough while running....It also appears that your are randomly replacing parts...How did you verify that the parts your have replaced had failed? I suggest you get a basic manual like chiltons or haynes as well as a decent digital volt/ohmeter, then do some testing. Pay close attention to map sensor test and manifold air temp. Having a good fuel pump does not insure that your injectors are clean enough to deliver a good spray pattern This will not show up on any test...you need to actually look at them. There are other items to look at but I think you will likely find your problem in what i mentioned. (you already checked for vacuum leaks, right?)
Good luck!

Posted on Jul 27, 2009

  • 169 Answers

SOURCE: 91 Jeep wrangler New everything idles rough, no Power then dies

you check for miss how is compression

Posted on Aug 29, 2009

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1 Answer

Have a 1988 OLDSMOBILE cutlass calais Issue that it's having is on startup Car starts will then start to sputter then die. Most of the time we can give it gas and it solves the issue. However,...


Is your olds a throttle body injected or cylinder fuel injected? or is it still a carburator?
If it's the throttle body there has been many times those injectors begin to gum up
and will cause the rough idle and even stalling out.

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When starting cold it turns over and runs for 2 sec. then stalls. Does this 2-3 times then will idle low til and runs rough till warm . When warm runs like a top.


Have the choke setting on your carb checked. if its fuel injected model---have the air and temperature sensors checked out


Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

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I have a 1988 jeep wrangler that won't idle.


1. check for vaccuum leaks.
2. check for a check engine code
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Sep 09, 2009 | 1988 Jeep Wrangler

1 Answer

Will idle high sometimes up to 3000 rpms when driving or sitting still


I have the same Jeep and same problem. The engine was running rough. The Jeep dealer fixed a vacum problem in the manifold and they then decarbonized and cleaned the fuel injectors. After these repairs the idle problem began, it would spike to 2000 rpm while sitting at idle, sometimes it would slowly come down, sometimes I would have to tap the accelerator. I took it back in and they then replaced the throttle motor and reprogrammed the PCM (Power Control Module?) Still same problem. Now they suspect a another vacuum leak and I am taking it back in on Tuesday, will let you know what happens, $ 1,300 so far.

Jun 02, 2009 | 1999 Jeep Wrangler

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Please be fast about checking your fuel pump. It is not giving enough fuel pressure.

Cheers.

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Rough idle until warm


how many miles are on the jeep? there are 2 temp sensors one at the water neck and one at the back of the motor one feeds the computer and may be bad or unplugged and usually will not show a code

Oct 21, 2008 | 1995 Jeep Wrangler

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