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Engine stalls going over bumps.

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Old Apr 10, 2007 | 12:27 AM
  #1  
Pablo-UA's Avatar
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Engine stalls going over bumps.

How it happens. When I go over bumps, cross rails CE light blinks and engine stalls, if she runs on neutral. No codes. It seems to me problem is somwhere in ignition switch ore wiering, but I wanna know your opinion. May be someone of you had the same problem.

The other problem, battery is low every morning. Sometimes impossible to start. So I park her on a hill to start withou starter. But I'm not sure, may be my battery is old, it is 4 years old.
 
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Old Apr 10, 2007 | 08:29 AM
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I would suspect a loose wiring connection. And your battery is probably toast. I wish I could narrow it down more. Maybe the emergency shut off switch is to blame.
 
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Old Apr 10, 2007 | 09:49 AM
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If the CEL is on, even momentarily, there should be a code stored on the computer.
 
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Old Apr 10, 2007 | 11:22 AM
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Originally Posted by Pablo-UA
How it happens. When I go over bumps, cross rails CE light blinks and engine stalls, if she runs on neutral. No codes. It seems to me problem is somwhere in ignition switch ore wiering, but I wanna know your opinion. May be someone of you had the same problem.

The other problem, battery is low every morning. Sometimes impossible to start. So I park her on a hill to start withou starter. But I'm not sure, may be my battery is old, it is 4 years old.
Pablo, you definately have a dodgy wire in the ignition circuit somewhere. Do lights go out or any other NON ignition circuits?

Regarding your battery, you could have an battery drain problem, a bad battery or a charging problem.
To test for a bad battery, put on charger overnight, check with Hydrometer in the morning. All cells should be about the same reading & S.G should be getting to a full reading (cant remember if about 1.2XX). Battery voltage should be about 12.6 volts 15-20 mins after you take it off the charger. If either is bad battery is on the way out. My original motorcraft battery lasted 7 years & was still good (that may have been luck though & it's harder where you are).

Battery voltage should be about 14v -15v with the engine running. less than 13.5v is not going to charge your battery properly. Much Higher charging voltage can boil your battery & you get a bad smell from the battery.

If car circuit is draining your battery you can test with an ammeter, maybe someone knows what that reading would be; I'm GUESSING about max 250 milliamps or lower.
 

Last edited by Aeroman59; Apr 10, 2007 at 11:27 AM.
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Old Apr 10, 2007 | 09:29 PM
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From: Washington state
for a sudden quick engine die like that, has to be something in the 3L TFI ignition system somewhere...wire connection...doesn't the TFI system set a code if there is a loss of PIP? i'm not a TFI fan or expert but have towed some out of the hills deader than a
 
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Old Apr 11, 2007 | 12:08 AM
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The problem is found. Unclipped connection on ignition switch. I can see, that connection was hot, becouse the plastic connector body was damadged. Well, connection is fixed, runs well
 
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