1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Vacuum Leak

Reply Subscribe

Search this Thread

Old

Jan 20, 2014 | 08:54 PM

#1

tatonka

Thread Starter

|

Junior User

Joined: Aug 2001

Posts: 53

Likes: 0

Vacuum Leak

Guys, I have a 91 ford f150 5.0 engine. engine idles about
1500 rpm. I think I found a vacuum leak at the diverter valve
behind the intake. would this cause the engine to idle high?

Reply

Old

Jan 21, 2014 | 02:43 PM

#2

White Max

Laughing Gas

Joined: Dec 2007

Posts: 959

Likes: 8

From: Imperial, MO

Yes, a vacuum leak can cause a high idle.

Reply

Old

Jan 21, 2014 | 06:08 PM

#3

tatonka

Thread Starter

|

Junior User

Joined: Aug 2001

Posts: 53

Likes: 0

that looks like a major job to change. if I take the smog pump off will that
fix the vacuum leak coming from the air diverter valve?

Reply

Old

Jan 21, 2014 | 06:14 PM

#4

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,785

Likes: 1,751

From: Kentucky

Quote:

Originally Posted by tatonka

that looks like a major job to change. if I take the smog pump off will that
fix the vacuum leak coming from the air diverter valve?

No it will not.

Reply

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

A question about vacuum leaks

RV_Tech

1999 - 2003 7.3L Power Stroke Diesel

12

Nov 4, 2016 02:19 PM

surging and increased idle

75N

1973 - 1979 F-100 & Larger F-Series Trucks

12

Mar 17, 2015 11:42 PM

Vacuum Leak or Normal.

dharte

1973 - 1979 F-100 & Larger F-Series Trucks

3

Nov 1, 2014 06:28 PM

inspector1

1999 - 2003 7.3L Power Stroke Diesel

11

Feb 19, 2008 07:26 PM

Reply Share

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 03:41 AM.