Topic: how come my 95 jeep is bogging down?

[sharpxmen]

so u think its the alternator then when its under a load. i just got done changing the plugs, wires, distribitor cap, ignition coil, tps, idle control sensor, battery, map sensor. waiting for the battery to be full charged b4 starting it.

I think it's either the alternator, the field control coming from PCM (so the wire or the control module integrated in the 'puter) or the power feed to the battery from the alternator (the 2 fuses you checked already and the cable from the alternator to the PDC). If the battery was the problem you'd still see a voltage increase when revving up the engine but you never know - so test with the battery fully charged and go from there I guess.

[95yjzilla]

ok man thanks. ill also check the ground connections also and clean the corrosion for them.

[95yjzilla]

ITS ALIVE!!!!! my jeep wrangler is alive and running well. so many new parts i had to install battery, plugs, wires, ignition coil, distributor cap, map sensor, tps, K&N cold air filter. still need to install fuel filter tommorrow. now time to sit back and relax with a nice cold beer. life is great!!!!

[95yjzilla]

jeep is still bogging down. couldnt change the fuel filter today because its pooring outside. i hope its the fuel filter thts causing the problem.

[95yjzilla]

ok so, i changed the fuel filter today after work. started the jeep to get the fuel through the new filter and clean the gas if the gas is dirty. test drove the jeep tonite after putting in the new fuel filter and idles fine. on the other hand its still spitting when driving. i can feel tht it wants to get up and go but cant because its spitting. this problem is driving me crazy!!!!!!!

[sharpxmen]

how's your voltage now?

and also, i would look at fuel pressure while driving, and although what you describe doesn't sound like it but i will mention  it anyway (just in case your explanation is not getting thru to me right) could maybe the cat be plugged?

[95yjzilla]

battery voltage is 12.8 volts

[grumpygy]

how's your voltage now?

and also, i would look at fuel pressure while driving, and although what you describe doesn't sound like it but i will mention  it anyway (just in case your explanation is not getting thru to me right) could maybe the cat be plugged?

Had the Plugged cat on my 94.  Was pissed and was laying under the jeep thinking, so i kicked the cat it rattled.  Pulled the cat and put on a cheap one problem was gone.  Have since just removed the cat.  Found out it would have been replaced under warranty if I would have taken it in.

[95yjzilla]

im gonna put fuel injecter cleaner in my tank to clean the injecters just incase there dirty. i mine as well just make a new exhaust for my 95 yjzilla....lol.

[95yjzilla]

just did a commpression test and eveything is good there. 2 of my pistons r a little low but nothing to bad to worry bout. also checked the cat and its not plugged. can feel the burst of exhaust air coming out of it. still looking for the problem.

[sharpxmen]

just did a commpression test and eveything is good there. 2 of my pistons r a little low but nothing to bad to worry bout. also checked the cat and its not plugged. can feel the burst of exhaust air coming out of it. still looking for the problem.

you can still feel exhaust coming out, it's during load that matters (i had the same problem at some point) - i'm not saying that's it but i had the cat plugged at one time and was still getting exhaust coming out thru the tailpipe but under load/acceleration would just act like there was a limiter on it and not go over a certain speed (and had to baby the pedal to get it up to speed, if i floored it was dying).

[95yjzilla]

thts pretty much wat my jeep is doing. i had my friend put his hand in front of the tailpipe and reved the jeep up and he could feel exhaust coming out. it does feel like there is a limiter when i get to a certain speed and under acceleration. i do have to baby the pedal. a few of my friend have jeeps and say tht it could be my fuel pump thts on its way out.

[sharpxmen]

thts pretty much wat my jeep is doing. i had my friend put his hand in front of the tailpipe and reved the jeep up and he could feel exhaust coming out. it does feel like there is a limiter when i get to a certain speed and under acceleration. i do have to baby the pedal. a few of my friend have jeeps and say tht it could be my fuel pump thts on its way out.

well, the pump was my thought too, that's why i mentioned checking the pressure while driving. Or if you can take the cat out and put a pipe in for a test around the block that could rule out (or confirm) if it's the cat.

[grumpygy]

thts pretty much wat my jeep is doing. i had my friend put his hand in front of the tailpipe and reved the jeep up and he could feel exhaust coming out. it does feel like there is a limiter when i get to a certain speed and under acceleration. i do have to baby the pedal. a few of my friend have jeeps and say tht it could be my fuel pump thts on its way out.

When Mine did it it was never at the same speed and time.  see the cat material inside was broken loose and was moving around.  Just sitting and reving it no problem worked great.  But while going down the road it would turn and completly plug the exhaust.  Slow down and it would fall back out and run good for a while.

As I said I kicked it and heard the material rattle around.

[RockinH5]

Check the surface temp of the cat at the front and the back and make note of the variance. I believe some variance is normal, but a lot could mean it's getting clogged, or is clogged already.