hiccup at idle almost sounds missfire like. 89 RENIX
#1
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Location: JERSEY ALL DAY
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Year: 1989
Model: Cherokee
Engine: 4.0L
hiccup at idle almost sounds missfire like. 89 RENIX
it hiccups at idle. Sounds like a miss but its not constant. tune up parts are fairly new (cap rotor plugs wires) is there anything else i should look for? it drives fine but i get mediocre gas mileage. It does have the infamous long crank times Renixes are known for but other than that its fine.
Where should i start?
Where should i start?
#2
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Location: Schererville, IN
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Year: 1997
Model: Cherokee
Engine: 4.0
I have a similar problem. Some people recommended spraying some carb cleaner around the intake where it meets the head.. In the meantime, I did replace, cap, rotor, plugs, wires.. I tried a new TPS, CPS, IAT.. same thing..
Then this morning I took a can of carb cleaner ans when I sprayed it around the number one cylinder intake runner, it bogged bigtime, so there it is.. I either have a cracked manifold or a bad seal, but I torqued those bolts down probably 5 times, so I am guessing a cracked manifold in my case.
In short, give the carb cleaner spray test a try, I wish I would have done that earlier before I started throwing parts at it..
Then this morning I took a can of carb cleaner ans when I sprayed it around the number one cylinder intake runner, it bogged bigtime, so there it is.. I either have a cracked manifold or a bad seal, but I torqued those bolts down probably 5 times, so I am guessing a cracked manifold in my case.
In short, give the carb cleaner spray test a try, I wish I would have done that earlier before I started throwing parts at it..
#3
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Year: 1989
Model: Cherokee
Engine: 4.0L
i just installed poly mounts...a cracked i.m. is a possibility when my old mounts went bad i have no idea how long the p.o. drove it around like that.any other possibilities?
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