Question about 2004 Jeep Wrangler

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2004 tj wrangler, speedo goes crazy and sometimes coincides with engine surging badly. hot or cold.

ACT dealership could not diagnose problem?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2004 Jeep Wrangler TJ won't

if your jeep has a harder time starting when its warm as well, i would say the throttle position sensor is bad, or dirty. mine does tah same thing. i just live with it. its cheaper than replacing it.

Posted on Aug 12, 2008

  • 2 Answers

SOURCE: 1992 Jeep Wrangler heater not blowing hot air

How often has the coolant been changed? My only guess is that it hasn't and the hoses and the heater core are plugged up with goo and a flush is needed

Posted on Dec 26, 2008

  • 84 Answers

SOURCE: 2004 wrangler chek engine light on. Code

a fuel cap indication would mean a leak not nessesaraly your gas cap, id check the fuel neck vent hose for a leak

Posted on Nov 04, 2009

GasparMacari
  • 166 Answers

SOURCE: Hard starting when cold ( engine cranks normally )

see if your engine has a ECT sensor (temp sensor that delivers information to your ECM) they are installed on the intake side of the cylinder head, it usually has 2 cables, have it checked replace if necesary

Posted on Nov 19, 2009

ramairgto72
  • 75 Answers

SOURCE: will1999 wrangler tj 4.0 engine

Hello,

You need to call a Dodge dealer, have the VIN info from both Jeeps, they will tell you what will and will not work, if they dont call another Jeep & or Dodge dealer.

To my understanding only some sensor placement differences make these engines different.

For sure the 02 WJ intake will make more power then the 99, it will be worth it to make that intake fit.

Good Luck!

Hope this helps.

Posted on Dec 29, 2010

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1 Answer

2003 jeep wrangler tj 2.4L my coolant fan won't come on. i replaced the coolant senser the relay and fuse still won't come on. i hot wire fan to the battery it comes on


2.4L so did you first idle it to get over heat,220f so it can kickon,
scanning the ECT s,proving it hit too hot,, per SM>??
the key here is what, a real schematic,
and a simple voltmeter
some jeeps also have a modulated fan.(and driver for it)
fuse 4, PDC good. tested?
it goes to fan relay , contacts and then to fan motor circuit breaker
no air pocket on top of engine,making, ECT lie?
i the pcm sees ECT overheat
it puts 12vdc across the fan relay coils
if not the wire there bad,cut or pcm bad.
the PCM pin C2-p17 LG wire goes to relay pin 4
he PCM grounds this pin (using a transistor)
the relay closes, fan turns on.


tj03-vpni2b3gys3zmvatysbcljgk-3-0.jpg

Feb 10, 2017 | 2003 Jeep Wrangler

1 Answer

2005 Wrangler Unlimited. Why does it die suddenly?


Please Help! 2005 Jeep Wrangler Engine Suddenly Stops While ...

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Aug 11, 2015 | Jeep Wrangler Cars & Trucks

1 Answer

How do I repair horn on 2005 Jeep Wrangler?


how to fix a horn on the work bench
or how to diagnose a dead horn on car.?

my guess, #2
TJ car.
here is the list;
  1. do not fiddle wires near horn sitting at steering wheel unless you defeat air bags first, per the BOOK "FSM" or u may die.
  2. check the fuses first.
  3. scan the PCM next, got DTC errors ?
  4. read the FSM yet?
here, TJ
http://colorado4wheel.com/manuals/Jeep/TJ/

the pdf.
chapter 8H> horn
and the schematic there 8w?
8w41-3 see that relay, does it click with button pushed?
key on?
need more ask.
is ground good to horn
did you hot wire horn to see if its really good first
connector pulled?

Feb 28, 2015 | 2006 Jeep Wrangler

1 Answer

While driving 2004 Hyundai Elantra the rpms momentarily surge and then it sputters, check engine light flashes but does not stay on. This happens when its a cold or warm engine. What could be the cause of...


Same as ALL vehicle issues

Put a scanner on it & check for codes
& look at data,don't use it like that, until
you know the issue

Have a shop drive it for 25 miles & record data
& wait for it to act up,then diagnose the problem

Mar 06, 2014 | 2004 Hyundai Elantra

1 Answer

Have 05 wrangler tj. When it's cold out it has a


jeeps are known for being hard to crank when cold so this is very normal!

Oct 12, 2012 | Cars & Trucks

1 Answer

I have a 2001 Jeep TJ.4.0L I6 5Speed 176,000Km When the engine is cold, at 1800RPM it makes a whining sound. It goes away when driven a couple miles.


It sounds like you need to replace the serpentine belt when they get old they will whine and when they warm up alot of times it will quit and sometimes not but it sounds like you just need a new serpentine belt which runs your water pump,alternator,powersteering.

Apr 22, 2010 | 2001 Jeep Wrangler

1 Answer

When started idels high about 2000 rpm then drops when hot cold ?


the iac probably has carbon built up around it this controls the idle speed try cleaning it first,if not it could be a bad iac or a vaccum leak that the iac takes some time to compensate for to control idle.

Sep 17, 2009 | 2002 Jeep Wrangler

1 Answer

1999 TJ Wrangler/Sah runs rough after warm


we have the same problem on our 2004 dakota. The mechanic says that it could be the exhaust vacuum that needs to be replaced. Also, they also mentioned that sometimes when the catalytic converter is plugged it acts that way also.

Let me know if this helps.

Jul 02, 2009 | 1999 Jeep Wrangler

1 Answer

1990 Ford Probe 2.2 automatic stalls in forward, reverse OK


Sounds like a bad IAC (idle air control valve/sensor) that controls your idle when going from throttle to idle. If bad your idle will act crazy and can cause stalls easily. Pretty sure that's it.

Dec 20, 2008 | 1993 Ford Probe

1 Answer

99 jeep wrangler


how many miles down your TJ have?

backfire through exhaust or the intake manifold?

I would check:
1. 02 sensor
2. clean the throttle body thoroughly by decarbonizing it as well as cleaning the IAC and TPS.

what was done from the tune-ups?

Jun 22, 2008 | 1999 Jeep Wrangler

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