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97 Jeep cherokee

934 views 6 replies 3 participants last post by  1stockjeep 
#1 ·
So my 97 cherokee sport has a kind of jerking or chugging motion when I decelerate while going highway speeds. It also is not burning gas efficiently (a full tank is getting me about 180~km) and black smoke shoots out the back if I accelerate quickly. Any ideas as to what the problem(s) is/are?

thanks
 
#3 ·
Miles/KM per tank means nothing, what are the calculated Miles/KM per Gallon/Liter ?

Is the Check Engine Light ON ? Are all the tune-up parts fresh ? Have you tested the O2 sensors ?
 
#5 ·
... the check engine light is on
If the CEL light is ON, your Jeep is trying to tell you what is wrong. Download the trouble codes with a code reader, and post the exact code numbers here.
 
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