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  #1  
Old October 5th, 2005, 11:46 PM
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Brian OShea
1995 Defender 90 ST
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Cold Weather Starter Problems

It just got cold here recently...well cooler...it's all relative in Southern California. I noticed that the truck is taking a little while to turn over on mornings when it's chilly. I was thinking that it could be the fuel pump, but I have tried turning the ignition to the on position a few times before starting, which does not seem to help any. The alternator belt is also loose, but I don't think that would be the cause...because I have full battery power. The engine also recently cut out on me while idling at a stop light...

What do you think...starter, alternator, or fuel pump?

Thanks!
Brian
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  #2  
Old October 6th, 2005, 12:47 AM
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Stephen Whitaker
1994 D-90
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Don't rule out the stepper motor which helps regulate the idle.
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  #3  
Old October 6th, 2005, 08:40 AM
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Thomas F
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My experience with any car (not just the 90) is that once the weather gets colder sometimes it is harder for battery to start the car. The reason for this is that a current is made between pos. and neg. terminals of the battery. This chemical reaction occurs slower when the weather is colder since molecules tend to move slower when the temperature is colder. Depending on how old your batterey is you may want to try a new one. I don't think this would cause the car to stall at a stop light, however the battery is the cheapest thing to replace and a good place to start.
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  #4  
Old October 6th, 2005, 10:21 AM
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Chris Davis
94 NAS D90 6.2LS
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I am with Steven--I would take out the stepper motor and clean it. It only takes 5 minutes and that includes drinking a beer and cleaning up.
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  #5  
Old October 6th, 2005, 11:30 AM
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Ernie Novey
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The stepper motor is usually the case, however cleaning can sometimes lead to more problems. I cleaned my stepper then reinstalled it. Shortly after the truck began shutting off randomly, however much more frequently. I bought a new one, and so far so good.
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  #6  
Old October 11th, 2005, 01:50 PM
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Brian OShea
1995 Defender 90 ST
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Thanks guys...will take a look at it this weekend!
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  #7  
Old October 11th, 2005, 04:44 PM
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Bill Lewis
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Can I be a newbie and ask where that motor is?
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  #8  
Old October 11th, 2005, 05:35 PM
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Mike Hippert
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top f the engine on the back (near the windshield). It has a plug with 4 wires comming out of it.
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first then ask questions later! The loose nut behind the wheel
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  #9  
Old October 12th, 2005, 05:13 AM
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Mark Mathews
'94 Beluga Black ST
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On a '94 It is on the rear passsenger side of the air plenum (see attached photo). I just replaced mine. Last Friday I was getting a check engine light with a code 48. The FAQ for a code 48 Starts with Stepper Motor. I bought a new one, installed the part, reset the computer, and drove for a day before it threw a code 48 again. Lovely...

I should mention that I have been putting off my smog check and my regestration and they are due tommorow.

I did a cursory check of the wireing, reset the computer and the check engine light stayed off long enough for me to pass a smog test.

A quick trip to the Auto Club to get my new regestration in the morning and then I can figure out why I wasn't home from the smog check before I was getting a Check Engine/Code 48 again...
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  #10  
Old October 25th, 2005, 04:35 PM
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Thomas F
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Boshea...any updates. I am curious what it was.
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