2000 F250 PSD High Altitude and Wet Quirks

[Jawbreaker5]

My 2000 F250 PSD (71,000 miles) has some strange quirks. Wondering if anyone else has had similar issues and determined a cause.

#1- In the mountains and sometimes at lower levels, when it is cold 25-40 deg range, in the mornings with light frost, truck will crank right over, but gauges in dash don't work. Includes speedometer, oil pressure, tac, just about all of them. After a while when it warms up, gauges start working again.

#2- If truck has sat for several hours during a rain or over night, when I try to start it, it won't crank over. Recently in the mountains at about 7K ft, had to drain fuel bowl before it would start. Rough idle for a minute or so before it smoothed out. It had rained over night before I went out to try and start it, and start it, and start it..........

I think it is possessed

Thanks

[Zaairman]

I think your windshield is leaky and your GEM is wet.

[Jawbreaker5]

Zaairman,
My windshield doesn't leak. But I am not familiar with a GEM. What is that and where is it located? What does it do? Thanks
Jawbreaker5

[Zaairman]

It's the electric module that controls everything... The windshields in our trucks are known to leak (even though you CANNOT see it), and moisture gets into the GEM. It is a fairly common problem with Fords. It's located underneath the dash.

[Jawbreaker5]

Zaairman
Is there anything I can do to limit the exposure of this to rain? Cover the area of the windshield wipers?

Have you experienced this problem?

Thanks
Jawbreaker5

[Zaairman]

You can get your windshield re-sealed. I haven't had it happen on my F-250, but I did have an F-150 that was showing signs of it, but I sold it before it got worse. I didn't sell it because of that issue though, I sold it to upgrade to the 250.

[Galaxie]

I am having weird issues due to gem as well. If i use my wipers sometimes the motor will shut down. I agree gem!