Question about 1995 Jeep Wrangler

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My 95 Jeep Wrangler failed smog because the check engine light would not come on when the vehicle was started. What do I look for and how do I fix it?

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  • Jeep Master
  • 22,095 Answers

No doubt someone has taken the bulb out so take the dash out and check it out first ,failing which i did hear a rumour that they have stopped doing emmision tests in the state of florida

Posted on Feb 13, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 95 jeep wrangler overheating and hissing sound

My Jeep doesn't go as fast as I think it can, I can only get it to 50 MPH. How do i fix this problem?

Posted on Aug 10, 2008

  • 1 Answer

SOURCE: 95 Jeep Wrangler wont start

Listen, You need a new computer. Those are your relays clicking. There is no signal from the relays going to your computer to tell the Jeep to turn on. Cause your computer is broke. Check online for the best price. I bought mine from autozone.

Posted on Oct 24, 2008

  • 6982 Answers

SOURCE: 95 jeep wrangler: gauge indicates 0 oil pressure

Wire on oil sending unit may have fallen off or sensor itself may have gone bad. Check both. If engine has no tapping noises, likely it's not a pressure problem.

Posted on Jun 07, 2009

  • 323 Answers

SOURCE: 2006 jeep wrangler check engine light came on it

There is a software update for the PCM that addresses this issue. TSB 18-028-06

Posted on Jun 08, 2009

thrca
  • 28 Answers

SOURCE: engine keeps missing. unknown codes

Code 1682 indicates low battery voltage. This could be a problematic alternator, which would likely cause misfiring. Autozone should be able to check this for you for free.

Code 1391 indicates the computer can not see the crank or cam sensor signal. This would likely be a result of the misfires.

Code 0320 indicates the crankshaft position sensor reference signal could not be found while the engine is cranking.

All of these issues point to either a cam/crank sensor malfunction or a charging system problem, either or both of which could cause the misfiring.

Posted on Sep 06, 2009

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95 sl500 check engine light reset and comes back on after it sits over night. any idea?


What code is it throwing ? Some codes are what are called two trip codes ! You clear the codes an start an drive the vehicle ,no check engine light . Park the vehicle over night an bam next time you start an drive the vehicle the check engine light comes back on .

??There are two types of DTC's, 1 trip DTC's and 2

trip DTC's

??A 1 trip DTC is for a condition that requires

immediate attention such as a catalyst damaging

misfire.

??A 2 Trip DTC is one that a condition must be found

during 2 consecutive trips such as an EGR fault.

??Most Monitors do not set a DTC and light the MIL

when a vehicle fails a test for the first time during a

DRIVE CYCLE. If a test is failed on a second

consecutive DRIVE CYCLE the MIL will light and a

DTC is stored in the vehicles powertrain control
module (PCM).

Feb 07, 2016 | Cars & Trucks

1 Answer

2003 JEEP WRANGLER... CHECK ENGINE LIGHT ONLY COMES ON WHEN THE WEATHER GETS COLD... ALL SUMMER ...NO PROBLEM...NOW CANT PASS EMISSIONS...


great question, why not use a real scan tool and scan it
the tools is like $10 (ask)
when cold and damp all bad high voltage ignition system fail.
from the tin lizzy 1920s to 2015, (for the same REASON)
but today the scan tool helps you with that.
my guess the car has never been turned up this decade.? like most here?

FAIL EMISSIONS, sure, if the CEL glows running you FAIL.
in every state in USA, you fail; (this is a USA forum)

2003 wrangler with the 2.5L or what engine? 4.0L I-6 (inline 6 banger)
not posting engine and the talking smog is a hopeless to all but
i can wax , physics and laws or Otto Cycle , generic.

the engine will fail smog for many reasons, Ill ;list some.
top fails.
  1. Engine misfires, (50 causes ) top cause bad spark. not ever tuned up. with spark plugs and wires, (P03xx codes)
  2. EVAP , failure, more DTC error codes, scan it.?
  3. Transmission errors (P07xx codes)
  4. Lazy CAT P042x codes.
  5. dead O2 sensors (any) for any reasons.
  6. lots more, but why must i list them if you can just scan it.

post back with facts and we can go as deep down the rabbit hole
and take the red pill (complexity path)
hints

if engine has COPS get new boots,.with spark plugs
if engine has a 4 wire coil pack, get new wires, and dont mix them.
remove 1 by 1. not mixed.
cops are engines with DIS that use, COIL OVER PLUGS>

the boots are cheap the cops not.
so boots we do, (savvy) first.

Feb 11, 2015 | 2003 Jeep Wrangler

1 Answer

Why can't I pass smog check engine light won't come on


The smog check requires a visual inspection of your check engine light. It has to come on for a bulb check at startup to make sure it's working. But, the light must go out after starting the engine(it cannot stay on after the engine starts during a smog check). If the check engine light fails either of these two tests, the vehicle will fail the smog check inspection.
You need to have the cause of your inoperative check engine light diagnosed and repaired.

May 31, 2014 | 2004 Chevrolet Blazer

2 Answers

Engine Check light


Take it to autozone or another place like it and have them read the codes and tell us what they are.

Jun 19, 2013 | 2011 Jeep Wrangler Sport

1 Answer

1995 JEEP WRANGLER 2.5L HARD START COLD 1 START OF THE DAY


When you're trying to start it for the first time of the day, look at the dash to see if the check engine light is on when you first turn on the ignition. If the check engine light is not lit up, your Jeep ecu is in need of repair and the vehicle will not start until that check engine light finally comes on.

Apr 18, 2011 | 1995 Jeep Wrangler

1 Answer

My GMC 2003 Envoy failed smog test because of "the


Hello
Does the light ever come on while you are driving the vehicle? It is possible that the vehicle does not trigger the code on the key cycle when vehicle is connected to the OBDII scan tool (a cycle is the time from when a vehicle is started to the time the vehicle is turned off) you should however most of the time be able to check a vehicles trouble code history to see what may be turning the light on
Good luck
Chris

Mar 22, 2011 | 2003 GMC Envoy

2 Answers

'88 Wrangler w/4.2 & Auto Trans. Cat Convert


The jeep has air injection and this is part of the air pump. The cat should have two ports.. These tubes should have check valves to prevent backfire.Usually their routed up on both sides of motor and attached at the air cleaner abouts

Nov 05, 2009 | 1988 Jeep Wrangler

2 Answers

2003 Toyota Camry Se V6 has a check engine light after failing smog check test by Fault Code P0500. Unsure why it failed just had some transmission & engine work done at the dealership a couple of...


I had the same problem, then took my car to an expert repair shop who diagnosed the sensors and
found no problem with the car. They notified the DMV who was unaware of the problem, who then told the repair shop (John's Bascom Automotive) that they will adjust their computer system to allow a "two speed idle test". My bill was $95 and I still have to pay for a smog test after driving around for
a couple of days to clear the computer monitors, a fair amount and I gladly paid it.

John advised me that I'd get no satisfaction with Toyota or the DMV. I went to the dealership where I
bought the car and they said that the smog stations don't know what they're doing. They charge
about $100 and work around the P0500 code but it takes them about two hours to do this. I told
them that I should have been notified about the dyno none-compatability by Toyota and that Toyota
should have notified the DMV beforehand. I wonder how many speed sensors are being replaced by
unknowing smog shops around the state. I got Toyota's main customer support phone number and
will call them Monday. I'm going to get my pound of flesh ($95 worth) from the DMV next week also.

traderralph

Jun 11, 2009 | 2006 Toyota Camry

2 Answers

Engine light goes just went on... 95 jeep wrangeler 2.5L


go to auto zone or parts store like that and have them pull the codes...it will help in fixing it

Nov 13, 2008 | 2005 Jeep Wrangler

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