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Post by 73Nova73 on Feb 17, 2004 11:13:24 GMT -5
I thought I got my parents jeep running fine yesterday but I guess not, here are the problems: It doesnt like to stay running, when I start it, the idle is way low and it just shuts off. The idle is normally 500 but its been going as low as 300. There is no loss of power what so ever, it will gladly rev to 5000 and bounce off the rev limiter but as soon as you let off the gas it goes back down to 300 and after second, it shuts off. I've replaced the water pump (dont ask) and it ran fine for awhile and then it started to fuck up again. Then, I changed the spark plugs about a week ago and it ran GREAT, more power than it ever had before and it would rev up alot faster than it used to, but now the problem is back. I've about run out of ideas, its not drivable when its like this, everytime you come to a red light and stop, it stalls and you cant put it in gear at idle or it will stall, you have to rev it up to 1500 to put it in gear. The check engine light has never come on and a friend of mine has put a diagnostic machine to it and it doesnt send any codes. What worries me is that it doesnt do this all the time, it seems like every time we fix something, it runs great and then the problem comes back like a week later.  Here are the specs: '97 Jeep grand cherokee laredo 4x4 5.2l (318) 220HP. PLEASE HELP!!! |
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Post by 73Nova73 on Feb 17, 2004 12:26:09 GMT -5
**update**
I went out and held it at 2000 rpm until the water temp hit 150 and then left off and waddayaknow, the idle is back up and its running great, WTF!!!!!!. I took it out for a ride and floored it about 5 times to varius speeds and about 20 minutes later I pulled into the driveway and some steam started to come from under the hood. I opened the hood and its leaking coolant from somewere but I cant tell where, its all over the front of the engine. I took the radiator cap off and it puked some antifreeze. Why would cooling issues affect the idle speed and cause it to stall?
I replaced the water pump about a month ago and have been check it once and while for leeks and havent found any.
(confused and hoping it's not a cracked block)
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Post by furydriver on Feb 17, 2004 12:27:01 GMT -5
no idea man that seems really weird, maybe it has somthing to do with a low battery? or somthing not sure
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Post by 73Nova73 on Feb 17, 2004 12:31:59 GMT -5
I don't think so, it doesnt have any trouble starting, it just has a problem with runing, and the voltometer is steady at 14.
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Post by furydriver on Feb 17, 2004 12:34:30 GMT -5
dude your update reminds me, check your temp guage, my buddy's ford taurus did that for a while it wouldn't cool off and would randomaly stall for no apparent reason, he said he had to replace the temp guage or fix it and now it works just fine
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Post by 73Nova73 on Feb 17, 2004 13:48:22 GMT -5
Why would the guage have anything to do with it? There may be a sensor that tells the engine to shut off if it doesnt warm up in a certain amount of time, but why would it just shut off at idle and not any other time? And if the senor was telling the engine to stop, wouldnt it run like shit all the time? because it doesnt, when you rev it up in park the whole damn jeep lifts.
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Post by §ùp€®ÑÓV∆ on Feb 17, 2004 14:37:46 GMT -5
Have you checked the timing on it? Maybe its gotten off and letting it drop down to low in rpm's causing it to choke out. Far as it leaking water, I dont know man that doesnt sound good. A cooling problem shouldnt make it bog down at idle tho.
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Post by furydriver on Feb 17, 2004 18:09:11 GMT -5
I don't know, just what my friend said was wrong with his car and it sounds pretty much the same as you problem
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Post by 73Nova73 on Feb 17, 2004 18:13:45 GMT -5
I dont think its the timing, it hasnt lost ANY power and it doesnt "knock" under load. I'm going to replace the air temp sensor in the intake and replace the water temp sensor that tells the computer what the idle speed should be. As for the coolant leak, my dad brought home a thing that puts presure in the system and it held 15 psi, so there shouldnt be a problem.(still a concern though, coolant doesnt leak out for no reason)
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Post by §ùp€®ÑÓV∆ on Feb 18, 2004 1:12:14 GMT -5
Yea you got that right, doesnt leak out just for any reason lol. Computers can be a pain in the ass when it comes to all the sensors.
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Post by 73Nova73 on Feb 19, 2004 12:49:57 GMT -5
I think I found out whats wrong, I'm pretty sure its the water temp sensor that tells the computer what the idle speed should be, It starts running fine after the thermostat opens at 210.
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Post by §ùp€®ÑÓV∆ on Feb 19, 2004 15:56:55 GMT -5
Bad part about newer cars...all those sensors. Dont you love computers? lol
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Post by 73Nova73 on Feb 19, 2004 16:46:41 GMT -5
HA, No. I dont, I've gotten into many fights with computers but the computer always wins  |
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Post by furydriver on Feb 20, 2004 0:34:16 GMT -5
lol that's how it used to be <with my pc> lol but I ended up taking a baseball bat and smashed the hell out of it, then rebuilt a custom computer ;D so I claim victory!!
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Post by 86کТΛηG† on Mar 23, 2004 13:46:02 GMT -5
uhh yyyeeeaaahhh... update. is it still runnin? or is it still havin probs. if so tha distributor is off or dieing gota crack in a hose and/or tha computers goin bad. |
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