Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum > Bogging down problem

Join Wrangler Forum Today


Thread: Bogging down problem Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
02-02-2010 05:14 PM
rrich Usually, but unfortunately not always, a clogged fuel filter causes backfire as well as stumbling - or bogging.
Reason is it causes fuel starvation, causing backfires - usually in the intake.

Before going to all the trouble of replacing the filter, have a good look at the ignition. A carbon trace in the cap, plug wires run too close together, bad coil wire or bad coil is often the cause.

Since it seems to be getting worse - and no backfiring indicates a weak ignition.
Pull a plug wire at a plug - poke a Phillips head screwdriver in the end you took off, (the end is round like a plug's head,) then hold the screwdriver shank close to ground and look at the color of the spark while someone cranks it.
Careful not to touch the metal part of the screwdriver - it'll get your attention real quick!

If the ignition is strong it'll have a thin crispy "snappy" blue spark.
If it's red or yellow, suspect the coil wire or a coil. Later model Jeeps use the new version of coils that are not oil filled. They tend to fail easily. But they are not expensive and certainly easier to replace than a filter.

Let us know what you find.
02-02-2010 03:05 PM
Jerry Bransford The fuel filter is contained inside the fuel pressure regulator which must be replaced as a unit. You can buy the fuel pressure regulator separately, eBay is one source... maybe Amazon.com/ too.

The TJ's main fuel filter cannot be cleaned as older types of fuel filters could be. Usually, the TJ's main fuel filter is considered a "lifetime" component which normally never needs replacement type of filter due to its enormous surface area.
02-02-2010 02:45 PM
rrettanderson05 any other sugestions. I talk to the guy at advanced autoparts and he said the fuel filter is not serviceable. Is it on the fuel pump? and if it is can you clean it out rather than buying a whole new fuel pump?
02-02-2010 02:15 PM
rrettanderson05
fuel filter

i just tried to find a fuel filter at advanced autoparts. They guy said it is not serviceable. Is it one unit with the fuel pump?
02-02-2010 01:42 PM
Jerry Bransford I'll be darned, I thought the TJ filter was big enough that it wouldn't normally get clogged up like yours did. You gotta stop dumping that Washington dirt & sand into your gas tank Mike.
02-02-2010 01:36 PM
MCE Mike
Quote:
Originally Posted by Jerry Bransford View Post
Was that clogged fuel filter on your '97 TJ Mike?
Yes sir.
02-02-2010 12:42 PM
Jerry Bransford Was that clogged fuel filter on your '97 TJ Mike?
02-02-2010 11:37 AM
MCE Mike My Jeep did nearly the same thing a few years ago, it ended up being a clogged fuel filter. It was fine around town, and fine for a while on the freeway. Then, after a while on the freeway, the Jeep would start "bucking" (that is the best way I can describe it) and the engine would bog really bad. The more throttle I gave it, the worse it would get. (On a side note, this was a little embarrasing while foot-to-the-floor passing someone in the left lane (2.5L) and then I would have to fall back and pull onto the shoulder, lol)
Anyway, after scratching my head for a while and replacing some tune-up parts, I ended up dropping the gas tank and found that the fuel filter was clogged.

Others have good advice above as well.
02-02-2010 11:00 AM
Jerry Bransford How's the catalytic converter? Could you have crushed it while offroading? But even if it's not crushed, a cat can clog up & cause the engine to run like crap due to increased backpressure from a clogged/crushed cat.
02-02-2010 10:51 AM
rrettanderson05 Thanks
02-02-2010 10:15 AM
randomhero3609 check ur spark plugs, wires and fuel pump. the fuel should have a bleeder right at the fuel rail. it looks pretty much the same as a tire valve.
02-02-2010 09:35 AM
rrettanderson05
Bogging down problem

I have a 1999 Jeep wrangler 5 speed with the 4 cyl. I have recently started having a problem with it giving me a jerking feeling while driving on the highway at around 70 to 75. Today i went to bak out of my parking space and it felt like it was trying to bog down on me and it is now making the jerking feeling every time i try to accelerate. If you have any insight as to what this problem might be please let me know. thanks!

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 01:31 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC