Hey guys, so I'm in the process of buying a 1999 Jeep Cherokee Limited, which is in amazing condition except for one thing. The guy who's selling the Jeep said that after an hour or so of driving there is a delay before the engine begins to rev up after he presses the gas. He said it was an electrical sensor, but I just want to make sure before I purchase a problem!

Any hints as to what might cause that is greatly appreciated!!

 

get it checked for codes on a test drive you could be getting into problems with wiring ecm if its just a sensor dont you think he would fix it to get more money when selling?????????????????

 

Typically with something like this I'd assume it was an O2 sensor or the like; I'd definitely read the codes [which you can typically do for free at a parts store] and see what it throws. Many of these sensors are actually pretty quick, pretty easy fixes, but some engine electrical problems are tough to track down and difficult to solve.

 

I agree that checking the computer for any stored codes is a great idea. You don't have to have a check engine light ON to have a stored codes. You would need a code reader or a scan tool. The "key-on, key-off" technique that can be used on earlier XJs won't work on a 1999.

This symptom could be caused by a whole host of things; we would truly just be guessing here until some troubleshooting is performed.

Any time you are considering buying a vehicle with a driveability symptom, you MUST factor worst case potential repair costs into your bid! It might be easily resolved, but if it is, the seller usually resolves it before putting it up for sale.

So my point is, if you really want this XJ and the seller doesn't seem like a sleazebag, use this to your advantage to lower the price. BTW, what is the asking price?

 

Hey, thank you all for the useful information!

I just recently talked to the guy and he said that he was taking the Jeep to his mechanic to try and find the faulty sensor.

He is asking $4,200 without the fix and now hes going to ask for $4,500 with the fix, I'm guessing if he spends more than $300 on the fix then he'll tack that onto the price as well. So far he hasn't BS'ed me, but still I have to be careful. Oh and the Jeep has 125K miles on it and hes going off the KKB which if $5,100 for a Jeep like his (which looks brand new), over here in CA thats what what they go for, I wished I lived somewhere else! Lol