Engine looses power while driving and makes the Jeep jerk
Hi guys, Just got a 2000 Jeep TJ 2.5 manual.
I bought it last tuesday and the the guy that sold me the Jeep had it stored for almost 10 months, with probably 1/4 of gas in the tank and probably no gas stabilizer.. So when I went look at the Jeep he was doing a small tune up on it, like changing the spark plugs,straps et cleaning the injectors and thats about it.
When I test drove it, it had not run for the past 10 months and while I would upshift, the rpm would start going down and I could feel the engine loosing power and giving kicks, but the more I drove it the less it was doing it, I decided to buy it, since the Jeep is almost in perfect condition and I had it for a very good price. The next day before going to work I filled up the tank and notice that the Jeep was driving a lot better, almost no more kicks, maybe once or twice, yesturday It didn't do It once and today maybe one time for a few seconds.
My question is, is this a sign of a dying Jeep engine or just having water or debris in the fuel tank?
Ok just to update, the jeep is still doing it an does it mainly when i pass 2000 rpm,
It is intermittant, sometimes It wont do it at all in a few days and some other days it will do it a few times, So what happens is the Jeep drives fine and especially going uphills the rpm will start dropping and the jeep will start losing power/speed and start jerking.
Should I try some body trottle cleaner? I also read this could be a clogged cat, what are you guy's thoughts?
I had a similar issue to what you are describing and for me it was a combination of bad upstream O2 sensor and a bad Throttle Position Sensor (TPS). Got those two sensors replaced and it's been smooth sailing ever since. Although in my case I also had a CEL come on which told me what it was, I'm not seeing that that is the case for you.
I had the same problem with my 08 Avenger. Turned out to be the distributor / spark plug wires. Fortunately it was still under warranty, so the dealer replaced the wires and I haven't had a problem since.
Jeep. There's a reason the Postal Service has been using them for over 50 years!
Ok so 2 days ago decided to do some offroad, ended up getting stuck in mud, after getting pulled out, noticed that my check engine had just turned on.
Tomorow i'll be cheking the codes out, my main guess is I probably broke the 02 sensor, could a 02 sensor cause the jeep to hesitate and loose power?
Oh and by the way it's been 5 days that the jeep run's perfectly
just took off the air tube and I sprayed 3/4 of a can of carb cleaner in throttle body while the engine was running, took it for a ride. Still doing it.
I bought some fuel injector/fuel pump cleaner and filled up the tank, I'll see if it becomes better during the week, I checked the map and throttle sensor and they seem fine to me, Im guessing maybe a bad fuel pump.
If I can't resolve this I'll probably drop it off at my mechanic so he can have a look at it.
For what it's worth a 98 model 2.5L had a recall issued. 1/2 of the recall was to check/replace the cat if it was rattling. The other 1/2 was to reflash the computer since some of them were not capable of detecting a bad o2 censor. I carried mine in a few months ago. They reflashed it and less than 10 minutes after leaving the check engine light came on. Needed both o2 censors replaced. It's called "E22 reprogram PCM and inspect catalytic convertor". If you send the vin information to Chrysler, they will send back all info including non completed recalls. I'm not sure if a 2000 was also inlcuded in those years.
Ok so here is another update, I changed my spark plug cables, checked my spark plugs their fine, changed my distributor cap and kept the rotor since it was ok and now I get no more jerking and power loss when im upshifting, I just experienced a loss of power at 100+ km/h
What could cause the Jeep to begin loose power at high speed?