Engine Dies!!

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  #1  
Old 12-06-02, 04:54 AM
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Unhappy Engine Dies!!

Yesterday my wife left the lights on running down the battery in her '92 Escort. I jumped her off with no problem and she continued upon her merry way. A little later she reported that the engine would not stay running whenever she lifted her foot from the accelerator. I went out and cranked it up and drove it around for a few minutes and verified her observation. It cranks fine, drives with no problem except when the foot is off the gas. then it dies every time. Anyone have any suggestions? I forget what size the engine is, but it is the larger of the 4 cylinder versions offered that year, with manual trans, fuel inj. A/C. Help please...
 
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Old 12-06-02, 05:23 AM
Joe_F
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1.9L engine.

Check the alternator output as noted in my "Basics" posts and the links and posts in my signature file.
 
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Old 12-06-02, 05:33 AM
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Joe, I am not at home where I can check it till this evening, but I wonder why you suggest the my engine dying problem may be related to an alternator problem?
 
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Old 12-06-02, 05:48 AM
otter_
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flat battery means no go. Sounds like the alternator is running your electical system when the rpm's are up. As soon as you lift off the gas, rpms and alternator output drop, not enough juice to run EFI, computer etc. Loose wire, bad voltage regulator, fried battery would be a good place to start.
 
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Old 12-06-02, 05:53 AM
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Otter, my battery is good, she just drained it by leaving the lights on for a few hours. After I jumped it off she drove it a few minutes and the battery was charged enough to start the engine several times with no problem so I would assume the alternator is performing adequately.
 
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Old 12-06-02, 06:00 AM
otter_
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ok, I'm out of ideas.
 
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Old 12-06-02, 09:07 AM
Joe_F
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You cannot assume the alternator is putting out an adequate amount without a digital meter, so you won't know much.

Might want to have it towed home rather than gamble getting stuck again. Then you can work on it at home at your leisure.
 
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Old 12-06-02, 02:14 PM
davidf
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Did you boost the battery the correct way.Do it the wrong way and you can dammage the computer or alternator.Sometimes the battery being boosted and the booster battery are different voltages .One may be 12 volts and the other 6 volts and dammage can result or you may have had the car doing the boosting with the engine running which is a no-no.The ground connection should be from the booster battery NEG. post to the boostee metal bumper or frame.
 
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Old 12-06-02, 05:11 PM
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Make sure you didn't knock one of the small wires loose on the negative cable.I don't remember the years,but some had small ground wires that attached to the negative cable end.If loose or just partially broke they could also cause the concern.
 
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Old 12-06-02, 05:43 PM
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you may also just need to clean the throttle plates if the battery was completly dead the computer lost its idle stategy and is unable to relearn it with all the build up around the throttle plate blocking airflow for your minimum idle speed.
 
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Old 12-06-02, 06:08 PM
davidf
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The computer may be reseted which is what happens when the battery cables are disconnected for a period of time until all power discharges from the computer in which case your engine will run bad until the computer has re-sensed and your driving enviroment.The problem might go away after driving the car for a day or so as the computer self adjusts.
 
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Old 12-09-02, 04:04 AM
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Just a follow-up report on the Escort idle problem. The next day it ran just fine with no subsequent problems. I guess the computer just took a little longer to "remember" it's settings. Thanks for all the suggestions...
 
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