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It won't start in the cold. If I use a hair dryer and warm…

Customer Question
It won't start in...

It won't start in the cold. If I use a hair dryer and warm up the ECM and fuse area it will start

Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded?

Nope they are good

Mechanic's Assistant: What is the model/year of your Nissan?

2009 nissan pathfinder se

Mechanic's Assistant: Are you fixing your Pathfinder yourself? What have you tried so far?

Yes- we have had the ECM "baked" but that didn't work

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not that i can think of

Submitted: 6 months ago.Category: Nissan
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Answered in 7 minutes by:
12/26/2017
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 6 months ago
Clifton B.
Clifton B., ASE Master Auto Tech
Category: Nissan
Satisfied Customers: 4,833
Experience: ASE Master Certified Tech, Nissan Master Certified Tech, 12 yrs. experience in auto repair.
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hi my name is ***** ***** I will be helping you today

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Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 6 months ago

is there any problems after the car gets hot and is the service engine light on

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Customer reply replied 6 months ago
There service engine light is not on, and not once the car is hot its fine ....until it gets cold again
And by cold i'm talking below 25 degrees
Customer reply replied 6 months ago
it was explained to me at one time...that when it gets cold the unit shrinks and the solder points pull away, this is why warming it up causes it to expand, the solder points touch and the car starts no problem.
Nissan Mechanic: Clifton B., ASE Master Auto Tech replied 6 months ago

ok you will need to replace the ipdm unit behind the battery to fix this problem this is a common problem on this car replacing the unit should fix it

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