Question about 1991 Jeep Wrangler

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Once my 91 jeep 2.5l warms up it sputters like it needs gas, then it idles and dies and wont run again until its cold again.

I have replace the Engine coolant sensor , o2, mat, plugs, wires, cap rotor, thermostat, fuel pressure regulator, fuel filter, fuel pump screen, injectors, Crank position sensor, throttle body (used) with used Throttle position sensor,starter, battery, alternator tested good, and no luck yet.

Posted by Anonymous on


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SOURCE: Rough idle until warm

HMM, ya ont get a code unless ya figure out how to read the morse code values the OB1's use. Hmm sputters, and rough idle can be from poor air circulation, as well fuel delivery.

first air.......inspect and clean your vacuum hoses, cracks and leaks will most notably ruin your day. as well as the performance of your ride. check the seal for your intake hose around the throttle body, then clean the ports in and around your throttle body as well. Bad air supply, poor idle.. follow me..

second is fuel delivery. Your getting your gas, thats evident, but are you getting the required amount. hard to guage unless you disconnect a line and test its pressure. so lets USE the KISS method.. KEEPING IT SIMPLE STUPID

first, check and or replace your fuel pressure regulator...

second, inspect condition of your fuel filter.

thrid, and certianly the last thing, your fuel pump. go in that order. or your gonna seriously annoy yourself when a 5 dollar fix turns into a 3-400 dollar fix.

Posted on Nov 19, 2008



  • 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


Braunson Y

  • 495 Answers

SOURCE: I have a 1994 jeep grand cherokee laredo its

The computer is releasing to much gas into the chamber. It something you'll have to get the computer to re-learn, or update it at the dealership. Only someone/company with a Tech2 can do as it connects to your cars computer (ECM) and once in there you can select the option to watch/measure or less / plus the fuel consumption.

Posted on Oct 19, 2009


  • 1 Answer

SOURCE: 94 Jeep Grand Cherokee is hard to start. If I turn

Has any one soled this yet???????? Because I have the the same prob. but mine is only when it is could out blow 65 it will start but I have to keep my foot on the gas like a carb with no choke

Posted on Dec 27, 2009


  • 40 Answers

SOURCE: i have a 95 jeep grand cherokee that will

check the fuel pressure on the fuel pump

Posted on Jul 31, 2010

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