ggriffin

Hi all. My name is Gretchen. I drive a 2001 Jeep Cherokee and I love this vehicle!!! Last week, it started having a misfire in one of the cylinders so I wanted to join the forum to see if anyone had any suggestions. If it's going to be an expensive fix, I might end up having to sell it to someone who has the expertise to fix it and enjoy it for the fantastic Jeep it is!
Looking forward to chatting with you all.

NewKindOfClown

Welcome to CF! We have people all around the state. Mind letting us know where you are?

my89xj

Well your locked in the front right? Jack up the front and spin the side you think is broken.

ggriffin

I'm in New Market (15 mins away from Frederick).

kuzican

Oh yeah. Didn't think about that. I've been doing dumb things lately.

my89xj

Right down the street from me.

kuzican

ordered a new O2 sensor. so hopefully this weekend my CEL will be gone, and not just the bulb burnt out. May swap my front axle this weekend as well. which would include putting the track bar and LCAs on as well.


Just ordered the rest of the parts needed for my 8.8 swap. besides brakes anyway. Still want to get new rotors and pads, and remanned calipers.

dukie564

Welcome Gretchen!

Post the exact diagnostic code (Pxxxx) you are experiencing. Any unexplained loss in coolant? Does the misfire noticeably affect the engine operation or is the check engine light flashing?

Your year uses coil packs instead of a ignition coil / distributor system. It's possible one of the coil packs went bad.

sycoglitch

Yup, it was that kind of day

dukie564

Kujo is pretty good

ggriffin

Thanks for responding! I called the mechanic to get the code and I am waiting for a call back. When I bring the Jeep in for an oil change they always top off the coolant, but it isn't something that I need to add to often.
The problem started when I was sitting at an idle and all of a sudden I heard a change in the idle noise and a slight knocking sound started. The engine light started flashing. At low gear, there is a loss in engine power. It takes a bit more to get the Jeep up to speed. Since I only drove it a few miles after the problem started, I can't say for sure that there is not issue once it starts picking up speed and shifting into higher gears. Thoughts?

dukie564

The engine light flashing means it's going into limp mode. It cuts power to try and save the engine from serious damage, but allows you to get it home or to a shop at low speed. You were right to stop driving it.

I'd look into a coil pack going bad and needing to be replaced. I'd also change the plugs. The code should say what cylinder(s) the misfire is occurring on. There are 3 coils, one for every 2 cylinders, so if the misfire is on adjacent cylinders with the same coil pack, the pack is almost certainly bad.

I'd also look into your grounds. The coils use the ground point on the block by the oil dipstick. Make sure the ground wires are intact (both from the ground block to the coils and the battery (-), and shiny clean at the attachment points.

dukie564

anyone have input on this POS?

https://www.cherokeeforum.com/f53/sl...2000-a-203814/

sycoglitch

I just posted. It's a shame it's such low mileage but might be easier trying to source a new vehicle. Maybe fix the serpentine belt and drive it until it goes.

dukie564

Anyone have a 3.07 geared XJ dana 30 in stock form lying around? suitable to run under my jeep temporarily without modification (ie. gears, carrier/pinion bearings, and ball joints in good shape). Doesn't need to have shafts, hubs, or brakes. Cheaper the better