**please help** trouble with idle and voltage
#169
Thread Starter
Seasoned Member
Joined: Oct 2011
Posts: 348
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From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
$50 at Autozone. Its a Bosch one. Also I forgot to mention that I had a vacuum hose leak in a hose to the throttle. So she doesn't die anymore.
#171
Thread Starter
Seasoned Member
Joined: Oct 2011
Posts: 348
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From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by cheepjeep44
Thx. Which hose?
#173
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 19
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Wonder if you didn't bump the MAP sensor line changing the valve cover, then running rich fouled the O2 sensor. Anyway that's a S-load of blow-by. You might want to change your oil & filter......
Fantastic! Now if it ever snows again you can still get around. Driest Dec. here since records...had to down-size the nozzle on my hydro-electric, creek's drying up. You might want to check the vac. lines on that Honda
Fantastic! Now if it ever snows again you can still get around. Driest Dec. here since records...had to down-size the nozzle on my hydro-electric, creek's drying up. You might want to check the vac. lines on that Honda
Last edited by DFlintstone; 12-16-2011 at 02:59 PM.
#174
Thread Starter
Seasoned Member
Joined: Oct 2011
Posts: 348
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From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by DFlintstone
Wonder if you didn't bump the MAP sensor line changing the valve cover, then running rich fouled the O2 sensor. Anyway that's a S-load of blow-by. You might want to change your oil & filter......
Fantastic! Now if it ever snows again you can still get around. Driest Dec. here since records...had to down-size the nozzle on my hydro-electric, creek's drying up. You might want to check the vac. lines on that Honda
Fantastic! Now if it ever snows again you can still get around. Driest Dec. here since records...had to down-size the nozzle on my hydro-electric, creek's drying up. You might want to check the vac. lines on that Honda
#175
Thread Starter
Seasoned Member
Joined: Oct 2011
Posts: 348
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From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
So today I might be changing that o2 sensor and going for a little test drive. She is running great. No problems, even with a bad o2 sensor, but I'm gonna change it anyways to help save on gas. And I might also remove my oil pan and clean out all the crap that is surely built up in it. Can I power wash there?
#177
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Seasoned Member
Joined: Oct 2011
Posts: 348
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From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
Well ya that's what I meant lol. But what would be the best way to clean out the motor. A family friend who is a mechanic told me to use diesel.?
#178
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Marvel Mystery Oil, one quart, with 5 qts of Rotella and a new Wix or Napa Gold filter. Do it again in 1,000 miles. Same thing: MMO and Rotella with good filter.
Last edited by cruiser54; 12-20-2011 at 07:04 AM.
#179
Thread Starter
Seasoned Member
Joined: Oct 2011
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From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by cruiser54
Marvel Mystery Oil, one quart, with 5 qts of rotella and a new Wix or Napa Gold filter. Do it again in 1,000 miles. Same thing: MMO and Rotella with good filter.
#180
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 19
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
I think the "HD" you see on the oil bottle means "high detergent". I remember an old chevy I had run on Pennzoil before high detergent was the norm. The valve cover was completely casted with gunk. Just clearance to let the rockers move.
Theory was you didn't want to switch to HD because when all that gunk came loose it would foul things up. (that is, switch without cleaning it up first).
If I was worried about some sort of contamination, I'd change the oil & filter, then just plan the next change sooner. If modern High Detergent oil can't get it to come loose and lodge in my filter, it can stay where it is as far as I'm concerned. Just my Two cents......
Theory was you didn't want to switch to HD because when all that gunk came loose it would foul things up. (that is, switch without cleaning it up first).
If I was worried about some sort of contamination, I'd change the oil & filter, then just plan the next change sooner. If modern High Detergent oil can't get it to come loose and lodge in my filter, it can stay where it is as far as I'm concerned. Just my Two cents......