Weird noise, temp creep and rough idle when hot
11-02-2016, 10:03 PM
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Location: Portland OR
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Year: 96
Model: Cherokee
Engine: 4 liter
Weird noise, temp creep and rough idle when hot
Aside from the strange rattling I've been hearing on light throttle, today my 96 auto, after about 30 minutes in bad stop n go traffic temps stared to creep up over the usual 195-200 to around 220.
Just past 210 idle got rough and almost bucky.
It did this the last time I was moving slow in a traffic jam for about 30 minutes last week. Both times outside temps weren't over 65.
I have a Nice CSF radiator and ZJ fan clutch on it , but the clutch is about 6+ yrs old.
I had the belt too tight after doing a water pump and thermosat 4 months ago, so I took it off and checked things for damage.
The water pump when spun by hand made a faint groan now but no wobble or in out play so I properly tensioned the belt.
Motor mounts are good and fan clears everything.
I'm wondering:
Could my fan clutch be going out and that's the rattle/squeal I've heard faintly at light acceleration from a stop lately and possibly the temp creep? It seems not as loud as it used to be fwiw.
Also, would that tiny bit of groan mean the water pump's shot?
Still doesn't explain why my idle is crap when hot though.
THoughts?
Just past 210 idle got rough and almost bucky.
It did this the last time I was moving slow in a traffic jam for about 30 minutes last week. Both times outside temps weren't over 65.
I have a Nice CSF radiator and ZJ fan clutch on it , but the clutch is about 6+ yrs old.
I had the belt too tight after doing a water pump and thermosat 4 months ago, so I took it off and checked things for damage.
The water pump when spun by hand made a faint groan now but no wobble or in out play so I properly tensioned the belt.
Motor mounts are good and fan clears everything.
I'm wondering:
Could my fan clutch be going out and that's the rattle/squeal I've heard faintly at light acceleration from a stop lately and possibly the temp creep? It seems not as loud as it used to be fwiw.
Also, would that tiny bit of groan mean the water pump's shot?
Still doesn't explain why my idle is crap when hot though.
THoughts?
