Reocurring Glow Plug Trouble on 09 JSW

[pecosrunner]

hello all.Just trying to get some input from all the vets on here. I have an 09 JSW that i bought last September.On the very first cold morning of the year as i went to start my car in the morning the 'check engine' came on and stayed on.Ran code scan test and it said No. 4 glow plug fault.Took the car to the dealer and they diagnostic with same result....cylinder 4 glow plug circuit sporadic.They replaced glow plug and trouble went away.This past week we had our coldest day of the year (about 39) and on my first cold start of the morning....check engine light came on.I ran scan code test and same thing....No4 glow plug. I would really hate for this to happen every year.i made an appointment with the dealership again. Ok guys....any advise or pointers to look for???

 

[mo_focus]

What did they replace last time? Just the glow plug or wire? Maybe there is a short somewhere and the cold and moisture makes it worse?

 

[pecosrunner]

i havent taken it yet to the dealership im scheduled for this friday.i will post the outcome.The sevice manager did state it could be in the harness wiring.He is goin to look closer at that.