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Engine imobilizer bypass

Hi, i own a 1999 xj jeep cherokee auto 4 litre and what i believe is the engine imobilizer light came on one morning as i tried to start it to go to work, i cannot start it even though the engine turns over and none of the jeep dealers in the south queensland area want to touch it as it's duel fuel. it was running perfectly the night before the morning it stopped working, it is a very nice vehicle and an engine swap is looking like the only way to bypass the imobilizer and computer , i like the features that the car has got and really don't want to have to that avenue if possible. any sujestions would be greatly appreciated, thank, bryan.

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  • Jeep Master
  • 1,207 Answers

Take a obd2 scanner to diagose, and then you will konw what is the problem.
China OBD2 car diagnostic tools wholesale on CareUCar

Posted on Feb 12, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1999 jeep grand cherokee / 4.0 L.

I had a skim module go out in mine in the ignition, and I have a 2001. It's a 100 part, and now it starts fine.

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I'd suggest the ignition control module, however I'd have a certified mechanic check it out just in case...

Posted on Feb 01, 2009

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SOURCE: 1999 Jeep Grand Cherokee Headlights do not work

I would look at replacing the headlight switch(junkyard will save you money)!

Hope this sheds some light on it!

Posted on Oct 23, 2009

arauzvictor1
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SOURCE: 1999 jeep cherokee 6 cylinder engine light

P0303 Cylinder 3 mis-fire Possible causes misfire does not return,defective Camshaft Position (cmp)or CKP sensor,vacuum leak,defective ignition system.

Posted on Dec 12, 2009

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SOURCE: 1999 lincoln town car, 133,000 mi. Car running

This is usually how it happens with Electric Fuel pumps. They either work or they don't. When you turn the ignition to on you should hear the pump engage and pressure up. If you don't most likely your pump is faulty. You mentioned that it did this after a freeze. It is possible that you have a frozen fuel line, Supply or return, will also cause this problem. The best you could do is move the vehicle into a garage and warm it up above freezing to allow the lines to thaw. A lot of time we get moisture build up in a tank without even knowing it. Cold fuel is supplied to the motor through the pump but the return line returns warm fuel and in a cold environment this will or can cause condensation to form in the tank and lines. Also bad fuel from a station will cause this issue. It doesn't take much with all the additives they put in fuel today. They sell fuel additive that will remove this moisture if that is the problem. try warming the vehicle up and thawing the lines. If this proves to be the issue you'll need to drop and drain the tank and lines to clear the problem or try a fuel additive to remove the moisture.

Posted on Jan 21, 2010

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Engine immobilizer bypass


i love posts that have the word bypass.
99XJ. (why not join the forum for Cherokees)
that dealer just gave you a wave off for nebular reasons.
the truth is its illegal for him to do what you ask.
never ask a dealer to bypass something like this. it's futile.
but do feel your pain, that really sux.
on the newer jeeps, the IMMO NOT bypassable.
(one guy bought a PCM that has no IMMO option and got that to work, imported from another country.
read this security page here.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service
quotes:
Once the VTSS engine no-run feature has been enabled in the PCM, it cannot be disabled.
1998 you can
If you are needing to DisArm the Factory Alarm:
Find the PURPLE / YELLOW (-) wire located in the Driver Kick Panel / Door wire harness (harness that goes into door)
Ground the PURPLE / YELLOW (-) wire

there is a company in Florida that will change your PCM
to disabled.
another:
http://xpresskit.com/VehicleCompatibility.aspx?p=null&year=1999&make=Jeep&model=Cherokee&ps=1&s=0&c=0

seems you lost your 3 key fobs.
always have 3, 2 are required for you DIY to make a 3rd.
in the USA we must tow the pig to the dealer.
and say, give me 2 keys and make it work
then go home and make a 3rd with DIY key, even a no fob button key works. cheap. (transponser only key) i have mixed brand keys running all fine. That is the way.... if that its not possible for you.
i bet you didnt ask them that. right> get 2 keys working.>
so the only way to bypass is to do research on
How to get remote start working, they have the cure.
or the Florida ECU shop. ( i lost the link, dang)

http://www.pirate4x4.com/forum/jeep-hardcore-tech/407998-smart-key-immobilizer-module-how-disable.html

Feb 12, 2014 | Jeep Cars & Trucks

1 Answer

1999 grand cherokee won't shift out of first with gas light on


You need to have the vechicle scanned for codes.I believe you are going to limp in mode on the computer.Have them check all codes,transmmission and body along with engine.

Apr 16, 2010 | 1999 Jeep Grand Cherokee

1 Answer

99 cherokee fuse for the fog lights. I can find the fuse and both of them don't work and the switch doesn't even light up


On late model XJ's, fog lights operate on fuses #3 & #4 (in your interior fuse panel), which also control the drivers side head light plug....

Hope help with this (remember rated and comment this).

Mar 12, 2010 | 1999 Jeep Cherokee

1 Answer

2001 jeep gd. cherokee larado 4.0 4wd auto. when


Have you run an engine control system fault code test? If not do that first.

Jun 08, 2017 | 2001 Jeep Grand Cherokee

1 Answer

Need fuse box diagram for 1999 Jeep Grand Cherokee


Hi Larry, you can find all information about your Cherokee in here: Jeep XJ Cherokee 1995 - Repair Manual

Aboutthe headlights fuses, the light system have several fuses located inthe Power Distribution Center and Fuse Block, for more details, Isuggest review the Section-8WL-Wiring-Diagrams (page 149 and next). In the page 140, you can find the Diagrams Index and the Components and location about this.

Also can review Jeep XJ Cherokee 2000 - Repair Manual or the XJ 2000 08w-Wiring-Diagram-Part-I (page 21 and next).

Hope help you with this. Good luck (remember rated this help).

Sep 22, 2009 | 1999 Jeep Cherokee

2 Answers

Where can i find the transmission model number for my 95 jeep grandcherokee lerado the transmission is not original it has been replaced with a diferent one 2 times so just need to know where to find the...


These pages cover the transmissions used in Jeeps over the years. Transmissions are arranged by the most recently introduced transmissions first.
Factory Transmissions 45RFE: The 45RFE four speed automatic transmission was used in 1999 Jeep Grand Cherokees with 4.7L engines. 46RE: The 46RE four speed automatic transmission was used in 1998 Jeep Grand Cherokees with 5.9L engines.
44RE: The 44RE four speed automatic transmission was used in 1996 to 1998 Jeep Grand Cherokee's with 5.2L engines.
42RE: The 42RE four speed automatic transmission was used in 1993.3 to 1998 Jeep Grand Cherokees with 4.0L engines.
46RH: The 46RH four speed automatic transmission was used in 1993 to 1995 Jeep Grand Cherokees with 5.2L engines.
32RH: The 32RH three speed automatic transmission was used in 1992 to 1995 Wrangler with 4.0L engine and it continues to be used in 1997+ Wrangler with 4.0L engine.
30RH: The 30RH three speed automatic transmission was used in 1992 to 1995 Wrangler & 1992 to 1996 Cherokee with 2.5L engine.
AW4: The AW4 four speed automatic transmission was used in 1987 to 1990 Jeep Cherokee (XJ), & Jeep Comanche with 2.5L & 4.0L engines. The AW4 was also used in 1987 through 1992 Jeep Comanche & 1991 through 1998 Jeep Cherokee & 1993 through 1993.5 Jeep Grand Cherokee with 4.0L engines.
AX-15: The AX-15 is a medium duty 5 speed manual transmission. It was introduced in mid 1989 in YJs with the 4.2L engine and XJs and MJs with this engine. The first year of the Grand Cherokee (ZJ), the AX-15 was rare option only with the 4.0L engine. The AX-15 is still used in TJs and XJs with the 4.0L engine.
AX-5: The AX-5 (and AX-4, the non-overdrive version) is a light duty 5 speed manual transmission. It was used in all Wranglers from 1987 equipped with the 2.5L I4 engine. It was also used in Cherokees (XJ) and Comanches (MJ) with the 2.8L V6 and 2.5L I4.
BA10/5: The BA 10/5 is a light duty 5 speed manual transmission. It was used in all 4.2L equipped Wranglers (YJ) from 1987 to mid-1989, and all 4.0L Cherokees (XJ) and Comanches (MJ) for the same years.
T-5: The T-5 is a light duty 5 speed transmission used in CJs from 1982 until 1986. It was also found in some 84-85 Cherokees (XJ).
TF727: The TF 727 is a heavy duty 3 speed automatic used in full sized Jeeps (SJs and J series pickups) from 1980-1983. From 1984-1992 the 727 was only used in these trucks with the AMC 360 V8.
999: The 999 is a medium duty 3 speed automatic used in CJs from 1980-1986. It was also used in 1984-1990 SJs and J pickups with the 4.2L engine, in the YJ from 1987-1991 with the 2.5L and 4.2L engine, and in the XJ and MJ through 1986.
904,909: The 904 and 909 are light duty 3 speed automatic used in CJs from 1980-1986 only with the I4 engine. It was also used during this time period with XJs and MJs with the I4 and V6 engine. The 909 is a 904 with a lock-up torque converter.
SR-4, T-4: The SR-4 and T-4 are light duty four speed manual transmissions used in CJs from 1980 until 1986.
T-176, T-177, T-178: The T-176, T-177, and T-178 are a medium duty four speed manual transmission used in Jeep CJs, SJs, and J pickups from 1980-1986.
T-150: The T-150 is the 3 speed manual transmission that was used in CJs from 1976 to 1979.
T-18: The T-18 is a heavy duty four speed used in Jeeps from 1971 until 1981. It was only used in the CJ from 1971-1979.
T-15: The T-15 was used only in V8 equipped CJs and Jeep trucks from 1972 to 1975.
TH400: The TH 400 is a heavy duty three speed automatic that was used in CJs with the BW 13-39 transfer case from 1976-1979. The TH 400 was also used in full sized Jeeps (SJs and J series pickups) from the late 60s until 1979.
T-14: he T-14 is a three speed transmission used with the "Dauntless" Buick V6 and AMC I6 from 1967 to 1975.
T-86: The T-86 is one of the three speeds used with the many CJs and Jeepster Commandos with the "Dauntless" Buick V6.
T-98: The T-98 varies only slightly from the T-18. It was used from the 50s until 1970 in different Jeeps.
T-90: The T-90 was the standard three speed for CJ and their military counterparts built from 1945 until 1971. It was also the standard transmission for Willys Wagons, Willys Pickups, FC trucks, and Jeepster/Commandos during this time period.
T-84: The T-84 is a light duty three speed used in MBs and GPWs during WWII

Good luck!!!

Jun 26, 2009 | 1995 Jeep Grand Cherokee

1 Answer

1999 jeep c. 4.0 litre engine. Fuel drips from muffler wont start


How is this car running? Remove the vacuum line from the pressure regulator on the fuel rail and check to see if there is any gas coming out of the line. If you see gas then the regulator is bad.

Dec 13, 2008 | 1999 Jeep Cherokee 4WD

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