2001 F350 problem
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Mountain Pass
Joined: May 2013
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From: Reno NV
2001 F350 problem
While driving my 2001 F350 7.3 today running errands it started to have a real concerning issue. Once I slowed down back into my neighborhood it would make a thud, then feel like someone was pushing the brakes (even when i gave it gas). Then it would thud again and drive normal. I'm worried its the transmission getting ready to go 
Any input?
Any input?
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Mountain Pass
Joined: May 2013
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From: Reno NV
It almost feels like a really rough engine breaking action. It does it for a short period, I let off the throttle and get back on it and it drives normal for a short time then starts doing it again...I have no idea what is causing this.
Tuned
Joined: Apr 2011
Posts: 334
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From: Michigan
If its the A/C compressor that baby is about to lock up. You should be able to unplug the compressor to rule that out.
It would make me wonder about a torque converter that going haywire some how.
Best of luck
It would make me wonder about a torque converter that going haywire some how.
Best of luck
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Mountain Pass
Joined: May 2013
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From: Reno NV
Thanks for the thoughts guys. I would be ecstatic if its just the ac compressor. I will check it out. I really hope its something simple. I know with the miles my truck has its only a matter of time for the transmission...but pleeaaaase not now! We are currently having to replace the trans in my wifes Subaru.
fbh31118 I was wondering about the torque converter also. When it does this I really cant accelerate at all until it stops. It's got me baffled. It doesn't feel as though the trans is slipping...and it shifts fine in between this happening. Whats got me worried is that whatever is doing this is actively slowing the trucks momentum....acting just like an engine brake.
fbh31118 I was wondering about the torque converter also. When it does this I really cant accelerate at all until it stops. It's got me baffled. It doesn't feel as though the trans is slipping...and it shifts fine in between this happening. Whats got me worried is that whatever is doing this is actively slowing the trucks momentum....acting just like an engine brake.
Logistics Pro
Joined: Feb 2004
Posts: 4,460
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From: The Land Of Time
When it happens just turn the mode switch to off. If that fixes it then you know its the A/C compressor. My guess would be that the torque converter is not unlocking, or maybe the trans isnt shifting out of gear.
Any chance the OD light is flashing on the gear selector?
Can you get someone to see if it has any fault codes in it?
Sarge
Any chance the OD light is flashing on the gear selector?
Can you get someone to see if it has any fault codes in it?
Sarge
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Mountain Pass
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From: Reno NV
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Mountain Pass
Joined: May 2013
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From: Reno NV
Well I took it for a drive again to mess around with it and try to narrow down when/why it happens...It was seemingly doing it mostly when shifting to 3rd. It would coast and idle fine if I quickly shifted into neutral when it started...which leads me to believe it is in fact the trans 
I checked the fluid and it seems a bit burnt. I think I know what happens from here I have no clue what I'm going to do. My wife's Subaru is in the shop right now with a bad trans. When it rains it pours I guess. I may be riding a bicycle for a while because there is NO way I can afford to do two transmission replacements so close together.
I checked the fluid and it seems a bit burnt. I think I know what happens from here I have no clue what I'm going to do. My wife's Subaru is in the shop right now with a bad trans. When it rains it pours I guess. I may be riding a bicycle for a while because there is NO way I can afford to do two transmission replacements so close together.
Elder User
Joined: Nov 2010
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From: Needville, TX
I'm 99.9% sure you are right ...the compressor will NOT cycle when the switch is off...
Hotshot
Joined: Oct 2003
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From: Here in No. Calif
Well I took it for a drive again to mess around with it and try to narrow down when/why it happens...It was seemingly doing it mostly when shifting to 3rd. It would coast and idle fine if I quickly shifted into neutral when it started...which leads me to believe it is in fact the trans I checked the fluid and it seems a bit burnt. I think I know what happens from here I have no clue what I'm going to do. My wife's Subaru is in the shop right now with a bad trans. When it rains it pours I guess. I may be riding a bicycle for a while because there is NO way I can afford to do two transmission replacements so close together.
I checked the fluid and it seems a bit burnt. I think I know what happens from here I have no clue what I'm going to do. My wife's Subaru is in the shop right now with a bad trans. When it rains it pours I guess. I may be riding a bicycle for a while because there is NO way I can afford to do two transmission replacements so close together.Best of luck and post up results.
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