Question about 1998 Jeep Cherokee

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My jeep jump and bucks and acts like its bogging down when im just cruising down the road... what is the problem?

Ive already replaced the cps, when i say bog down, when im cruising it will act up and if i give it more throttle it will even backfire but still keeps bogging down then will pick back up and repeat.... it doesnt really have and problem with pick up when i put foot iner ***, but there is a lack of power that i can notice, its had tune up, new water pump i know it has p1682 problem im solving that already and its having a problem with torque converter clutch soleniod circuit OPEN, is that a possibility behind this? im confused on this ive learned how to rebuild the 4.0 in a month diagnosing is something im still learning please help!! thank you

Posted by sean lawrence on

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5 Related Answers

hemi_60

  • 4 Answers

SOURCE: 1999 Jeep Grand Cherokee : Replaced Water Pump and Drive Belt now Jeep won't start?

When you replaced the Water Pump, did you replace the Timing Belt? Any time you replace a Water Pump you have to replace the timing belt because it stretches out. If you did not then most likely your Engine is out of time and there for will not start, but it will turn over. hope this helps, good luck.

Posted on Nov 03, 2008

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Anonymous

  • 1 Answer

SOURCE: jeep codes location of unit

Got me a complete manual for 199 jeep factory model and found location of each individual unit in question. Manual gives u possible solution to each code and repair and or replace. As a mechanic myself testing, trouble shooting and repair was not that difficult. Shift solenoid was very difficult to get to. Located under the head lamp passenger side.

Posted on Nov 19, 2008

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Anonymous

  • 132 Answers

SOURCE: Locationof the Torque Converter Clutch Solenoid

Your transmission should still work if the solenoid goes bad. It will just shift funny

Posted on Jan 30, 2009

Anonymous

  • 20 Answers

SOURCE: jeep wrangler bucking

how long has this been happing..one tank of fuel or more, could have been bad gas, replace filter,, put gas dryier in fuel tank..if it continues could possibly be transmission related..the reving down doesn't sound like transmission though if tansmission was slipping it would rev up..good luck

Posted on Jun 02, 2009

Anonymous

  • 2926 Answers

SOURCE: 1989 jeep wrangler starts jumping and backfiring

Start with the basics...meaning check the spark plug wires and spark plugs. While under the hood, inspect all hoses for a vacuum leak(s). Then turn the ignition key on-off-on-off- on...leave in the on position and write down the number of flashes the check engine light indicates....2 flashes = #2....pause.....3 flashes = #3.
Let start from here. Are you able to perform engine repairs or diagnostics???

Posted on Jan 17, 2010

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0helpful
1answer

How do I stop my Jeep Cherokee from Bucking down the road?

first off what is bucking? you never said, (engine or trans)????
there are may parts on the car, that can buck, shake, or surge.


the jeep keyon off on trick usually is totally useless for this problem. but heck free to try.
the problem here is the ecu forgets some error after keyoff. oops.. you need to scan it using a real scan tool....

if savvy and like danger
try to see if the asd drops, at the buck moment.
there are ways to do that. ask.
(bad dealer, fire him) try an honest , ASE shop and mechanic.
google "ase shops" BINGO !

avoid stealerships and only as a last resort. (a ride to h3ll?)
for that cash could buy a running used one. here.
it's an old jeep, and like all old cars they will be a problem.
all old cars are.
I'd have a scan tool connected, my INNOVA 3140 (does old jeeps)(this tool does old jeep OBD1 scans)

and see what codes are stored, DURING the buck.
that's right driving and scanning, wife drives, you scan... or?
if it's the engine, it will show something,.
ill guess, now,.... (useless)
1: engine bucks, actually its stalls and recovers.
the jeep has a THING, called ASD.
if the ASD drops driving it WILL BUCK, and is clearly not transmission slip, or trans gear shifts caused.
its engine, so focus on the ENGINE and EFI system
if you lose to fuel pump pressure its not a buck its a slow bog.
so its not the pump dropping off line.
its spark dropping. and the ASD does that on purpose.

read this.

http://www.fixkick.com/Jeeps/ASD.html



what is something

if the ECU loses power, 12vdc main power,
the ECU goes off line and the scan tool shows. (lost comm)
bingo, no?
or if not that the ECU reports ASD related EVENTS (DTC'S)
0helpful
1answer

99 cherokee 4.0, at. idles rough. anywhere from 200 to 900 rpm. surges up and down at idle. on road it surges, stumbles and jolts while going down the road, runs fine a full throttle. have replaced tps and...

Very very likely there is an intake manifold leak.OR fuel pump playing up.I would start at the intake leak.I do not know what the chips or intakes are that you have on BUT,the symptoms are an intake air leak.Hope this helps you
0helpful
2answers

My 1988 taurus sat up for a while ... well ive run into a problem i cant seem to fix ... its hard to explain this but its like it wants to bog down then pop or backfire and after it sits all night its like...

you say it wants to put you on the side of the road...I assume you mean it stalls. Have you ever changed the fuel filter? The EGR, PCV Try the little things first.
hope it helps
1helpful
1answer
0helpful
1answer

I have a 98 cavalier keep getting the p0171 code and its running really really rich u can smell the gas in the exhaust ive replace tps sensor feul injectors, feul regulator, coolant temp sensor, both o2...

Usually it's the O2 sensor, but the fuel regulator could be stuck in the high output setting for heavy demand. Or the computer could be acting up. if you can, take it to the dealership, and have them test the computer, and the fuel regulator.
0helpful
1answer

I have a 1966 jeep cherokee lored do. the engine will turn over but not start. this would occasionally occur, but now is happening more freqently. i have replaced the cam sensor but it still won't...

It sounds like you need to replace your CPS (crankshaft positioning sensor.) You certainly don't want to have that fail for good on you when you are out on the road.


If it is the malfunctioning CPS, the reason your Jeep won't start is because it thinks it is already on.
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1answer

When I engage the cruise control is holds speed but rmp surges periodically around 2-300 rpm.

It could be your transmission trying to find the right gear it will jump around on diffrent road surfaces and going up hills/down hills. It is usaully noticable on cruise because it is at a constant speed and your thinking why would it need to shift. Sometimes it doesnt even really shift the gear its so inbetween it just jumps back really fast.

0helpful
1answer

1989 jeep wrangler starts jumping and backfiring

Start with the basics...meaning check the spark plug wires and spark plugs. While under the hood, inspect all hoses for a vacuum leak(s). Then turn the ignition key on-off-on-off- on...leave in the on position and write down the number of flashes the check engine light indicates....2 flashes = #2....pause.....3 flashes = #3.
Let start from here. Are you able to perform engine repairs or diagnostics???
0helpful
1answer

Fuel pump?

Probably stopped up cat
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