vacuum pump?
Thread Starter
|
Elder User
Joined: Mar 2012
Posts: 609
Likes: 0
vacuum pump?
Does a 2001 7.3 SD have a vacuum pump? If so, what is its' duty cycle?
I have a weird noise when I turn the key to the run no start position (sounds like a pump) which ends a few seconds later with a rattle. The unit this noise is coming from is on the passenger side fender under the hood, just in front of the blower motor. It doesn't sound healthy.
I have a weird noise when I turn the key to the run no start position (sounds like a pump) which ends a few seconds later with a rattle. The unit this noise is coming from is on the passenger side fender under the hood, just in front of the blower motor. It doesn't sound healthy.
Junior User
Joined: Jan 2010
Posts: 62
Likes: 0
How extensive would it be to replace all the vacuum lines on a sd?? I've got one hanging that used to operate my hubs, my blower is slow to react and sometimes I'll get straight hot air out oft ac then cold conditioned air... Kinda makes me think there is a leak or broken line... Any ideas???? I don't want to just throw a part at it when the one there is working its just not hooked up completely
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Trending Topics
Junior User
Joined: Jan 2010
Posts: 62
Likes: 0
Thanks, anyone got a diagram for where it all goes and how it's routed? If not, I'll do my best to trace it
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
HVAC Vacum Diagram "Manual Operation":
As far as hot and cold running A/C you may need to adjust the A/C cluch air gap. Springerpop's A/C Clutch Air Gap Adjustment
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
My leaks:
- PVHS (or ESOF module) leaked - new one for about $75 at the stealership.
- Cracked vac lines on the connector behind the wheel (turn the wheel to get at it without removing or jacking anything). I cut about 1 1/2 inches off the end of the vac tubing to the hub. Re-install freshly-trimmed end and have a celebratory beverage.