Question about 1995 Jeep Wrangler

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Rough idle until warm

Rough idle, rough acceleration until warm. Changed plugs, rotor, distributor cap, coil and throttle position sensor. No codes indicating malfunction.

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  • yadayada
    yadayada May 11, 2010

    Have you tested the ECT sensor and the MAF for proper signal return value, these will no set a code most times even when they have a problem.

  • Anonymous Mar 15, 2014

    already changed transmission filter and gasket, throttle position sensor and erg valve

  • Anonymous Mar 17, 2014

    car misses at idle and when going uphill. has codes po0172 and p0108. doesn't seem to happen until it's warmed up

  • Anonymous Mar 25, 2014

    my 1995 gmc idles rough i changed the map sensor and throttle position sensor and heat temp sensor still no change

  • Anonymous Mar 27, 2014

    ''I have an acura cl 98' 4 cylinder, it stalls out (just dies) when idling or well driving every once in a while 'sporadically'. the car has no lack of performance and I had a diagnostic test done and nothing was wrong or malfunctioning according to it''. ??? some body recommended I change the cam posiyioning sensor ... and another person told me I was leaking oil on a sensor in/behind the distributor .



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To much mileage is on it probley,.cuz thats what i have happening to my explorer because i hvae over 200000 miles on it

Posted on Nov 19, 2008

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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

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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

Posted on Nov 18, 2008

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Related Questions:

1 Answer

What is code p0300?

P0300 - Random, Multiple Cylinder Misfire Detected Fault Code Definition
  • Random, Multiple Misfire Detected
  • Check Engine Light flashing
  • Rough running, hesitation, and/or jerking when accelerating
  • In some cases, there may be performance problems, such as dying at stop signs or rough idling, hesitation, misfires or lack of power (especially during acceleration), and a decrease in fuel economy
Common Problems That Trigger theP0300
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems

Jul 25, 2014 | 2000 Dodge Durango

1 Answer

Rough idle when warm

check engine light?? i'd say check the O2 sensors...

Jun 19, 2012 | 1995 Saab 900

1 Answer

I have a 92 yj 2.5l 5 speed. it has only after warming up a misfire/rough idle. its fine when its cold and once it warms up and idle comes down it misfires/idles really rough. may be lacking power also. i...

check that the EGR valve is not sticking or has a vacuum leak. This valve will not operate until the engine is warm.

check also the engine coolant temp sensor (ECT). This sensor tells the engine computer that the engine has warmed up, so if it is faulty, it could be sending wrong information to the computer. If the sensor is disconnected, wires to it broken, or faulty in full cold mode, it will tell the computer that the engine is very cold, like -40F. The computer will schedule fuel for cold conditions. This is usually way too much fuel for a warm engine and it will rich misfire, idle rough, and be difficult to start warm.

The ECT has two wires going to it and is dedicated to sending information to the engine computer. It has nothing to do with your dash gauge that shows coolant temp. That sender has only one wire and is dedicated to the coolant temp gauge.

Feb 21, 2011 | 1993 Jeep Wrangler

3 Answers

Rough idle

replace map sensor

Mar 17, 2010 | 1993 Jeep Grand Cherokee

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