Question about 1998 Jeep Cherokee

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1998 4.0 liter inline 6 cylinder

Some months back my 4.0 liter began shutting down and backfiring loudly which in turn totally demolished my cat.converter and muffler.
so i went and replaced them both at a whopping $320.00 the mechanic ran a hand held diagnostic on the check engine code and all it would tell us is that there was a high manifold pressure after leaving the shop i drove maybe 20 miles down the road and it blew the converter and muffler again so since then i've driven it this way just to make ends meet until i could take it in to a dealer and have the larger diagnostic tests to try and determine where the problem is originating but the dealer wants me to replace the cat-converter and muffler again because they cant get an accurate reading this seems like nonsense to me!!! please is there any help to end this ordeal

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  • guilttrip08 Oct 21, 2008

    thanks mikey108 for the reply i am going to look into that sensor today oct 21 when it is cold it will, i guess depend on the position of the moon because sometimes it will start up and do fine until it warms up and other times it will start acting up with the first crank up of the day,but always when it does shut down when i can get it to crank back up there is a horible smell of burned gas fumes fills the cab this to me seems dangerous does these problems ive listed still sound like the crank shaft sensor?

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2 Answers

Could be map sensor too, but don't start changing sensors without really testing them.

Posted on Oct 21, 2008

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  • 475 Answers

How does it run when it's cold?
A bad crankshaft sensor could be the culprit.

Posted on Oct 14, 2008

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1 Answer

Engine firing order


First generation (ZJ) (1993-1998) what engine?
you dont know what engine is under the hood>?
well there are 3+ engines. or more , if exported out of USA. more.
for the inline engines, all are #1 front (RWD cars)
if you look close,. one cylinder is more forward that the other in front
that farther forward is called #1 on all V engines. (ASE class day 1 rule)
now the firing orders of most.
1,3,4,2 I4.
153624 v , I6 <<<<<< my guess. INLINE SIX Four Liters?
5.9l started in 1998 , USA Export models produced at the plant in Graz, Austria, were given the vehicle designation of "ZG". (have diffr. engines)


3.7L 6 cylinder
1-6-5-4-3-2

4.7L 8 Cylinder
1-8-4-3-6-5-7-2

5.7L 8 Cylinder
1-8-4-3-6-5-7-2

even the 5.9L fits. some jeeps had the engine changed.
so not looking and seeing what you have its a wild card.
mine has 3.8L V6
1-2-3-4-5-6.
but fires in pairs, due to wasted spark coils ,(3 coils) tricky , no?

now I have answered for just about all engines. there.

Mar 18, 2014 | 1999 Jeep Grand Cherokee

2 Answers

The correct firing order for 1998 toyota avalon with a six cylinder engine


1998 Toyota Avalon XLS 3.0 liter DOHC V-6 (1MZ-FE)

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I hope help with this (remember to rate and comment this).

Oct 02, 2010 | 1998 Toyota Avalon

2 Answers

Jeep 4.0 firing order


1999 Jeep Cherokee 4WD 4.0 liter L6 VIN "S"

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Hope this helps (remember rated this).

Aug 09, 2010 | 1998 Jeep Cherokee

1 Answer

Loud bang, then drop in power, now car running rough!


Get a compression tester and find out if you blew a cylinder. You'll need to test all cylinders. Your most likely running on 7 cylinders instead of 8 or 5 instead of 6 if you have the V-6.

Jun 25, 2010 | 1998 Chevrolet Camaro

1 Answer

Need to know the plugwire placement in 1994 Jeep Cherokee


That vehicle came with three different engine options for that year, there was a 2.5 liter inline 4 cylinder engine, a 4.0 liter inline 6 cylinder engine, or a 5.2 liter V-8 engine. Here are the firing order diagrams for all three engines and one of them should help you to solve your problem.


2.5 liter.

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4.0 liter.

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5.2 liter.


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Jun 13, 2010 | 1994 Jeep Grand Cherokee

1 Answer

WHAT IS THE FIRING ORDER FOR A 1998 FORD EXPLORER


google "ford explorer firing order"

4.0L OHV Firing Order Firing order for the 4.0 liter OHV V6 is
  • 1-4-2-5-3-6
http://autorepair.about.com/od/enginefiringorders1/ 4.0L SOHV Firing Order Firing order for the 4.0 liter SOHV V6 is
  • 1-4-2-5-3-6
http://autorepair.about.com/od/enginefiringorders1/ 5.0L Firing Order Firing order for the 5.0 liter V8 is
  • 1-3-7-2-6-5-4-8
http://autorepair.about.com/od/enginefiringorders1/ How to Find the Cylinder Order V6 When standing in the front of the vehicle the cylinders are numbered 1-3 up the passenger's side and 4-6 up the driver's side. How to Find the Cylinder Order V8 When standing in the front of the vehicle the cylinders are numbered 1-4 up the passenger's side and 5-8 up the driver's side.

Jun 07, 2010 | 1998 Ford Explorer

1 Answer

What type of motor does a 1991 Chevrolet Corsica have?


The majority of owners report their Corsica as having an Inline 4 Cylinder(L4), 2.2 Liter engine in it. There was the option of a 6 Cylinder(V6), 3.1 Liter engine for that year/model as well.
These were/are both Gasoline/Petrol motors.

Jan 15, 2010 | 1991 Chevrolet Corsica

1 Answer

Car misfire


For the 1998 Lexus GS 300 3.0 liter DOHC

Firing Order:
1-5-3-6-2-4

Cylinders:
(back)
...6
...5
...4
...3
...2
...1
(front)

Dec 30, 2008 | 1998 Lexus Gs 300

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