• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Rough Idling and dies


mrdpman

New Member
Joined
Dec 14, 2009
Messages
6
Reaction score
0
Points
0
Vehicle Year
1993
Make / Model
Ford
Transmission
Automatic
4.0 6cyl dies or idles rough, very sluggish when accelerating, but runs mostly fine when up to speed. Let off pedal and dies. Not sure where to start.
 


mrdpman

New Member
Joined
Dec 14, 2009
Messages
6
Reaction score
0
Points
0
Vehicle Year
1993
Make / Model
Ford
Transmission
Automatic
Found info in library

Will try cleaning the MAF and see what happens. I am new to the site and did not see the library until after posting this question. Thanks in advance for your help.
 

mrdpman

New Member
Joined
Dec 14, 2009
Messages
6
Reaction score
0
Points
0
Vehicle Year
1993
Make / Model
Ford
Transmission
Automatic
Still need help. Have cleaned the MAF and IAC, still cuts out and idles rough. Unpluged the MAF and it seemed to idle ok. So, I checked the MAF wires again and all looks fine, any advice?
 

vertlmt94

New Member
Joined
Aug 17, 2009
Messages
13
Reaction score
0
Points
0
Location
Shenandoah,Va
Vehicle Year
1994
Make / Model
Ford
Engine Size
5.0
Transmission
Manual
My 5.0 did that when it had a vacuum leak. My pcv valve came unhooked and truck wouldn't idle for nothin.
 

Nhaz

New Member
Joined
Jan 29, 2009
Messages
896
Reaction score
4
Points
0
Location
The Great White North, Ottawa, Canada
Vehicle Year
1998 and a few
Make / Model
Ranger+Ranger+E
Engine Size
4.0 3.0
Transmission
Automatic
The easiest place to start is checking for vacuum leaks. Get a propane torch DON'T light it. and wave it around the engine compartment. the released gas will be sucked into the engine if there is a vacuum leak and the engine will rev up as it burns the propane.
 

88rangerxltkc

New Member
Joined
Dec 18, 2009
Messages
10
Reaction score
0
Points
0
Location
Tamaroa,IL
Vehicle Year
88
94
Make / Model
FORD
Transmission
Automatic
4.0 6cyl dies or idles rough, very sluggish when accelerating, but runs mostly fine when up to speed. Let off pedal and dies. Not sure where to start.
Well i had a similar problem on my 94 4.0, all it was was a vaccum plug fell/rotted off. This has happened to me several times.
 

Madracingalley

New Member
TRS Banner 2010-2011
Joined
Apr 14, 2008
Messages
284
Reaction score
0
Points
0
Age
33
Location
Gansevoort, NY
Vehicle Year
2000
Make / Model
Volvo....
Engine Size
2.4L T5
Transmission
Automatic
check that line from the vaccumm tree in the back that goes to the front of the fuel rail in front of the coil pack. I just replaced mine and it runs WAY BETTER
 

knetter

New Member
Joined
Dec 23, 2009
Messages
1
Reaction score
0
Points
0
Vehicle Year
97
Make / Model
Mazda
Transmission
Automatic
Have you figured anything out? I think i am having a similar problem with my 97 4.0 with auto tranny. When you let off the gas when driving it'll drop the RPM's and stall out, this problem did NOT happen gradually. Thanks.
 

Z3CHYD

Active Member
U.S. Military - Active
U.S. Military - Veteran
V8 Engine Swap
Joined
Dec 11, 2008
Messages
1,342
Reaction score
17
Points
38
Age
33
Location
Lancaster, PA
Vehicle Year
03
Make / Model
Ford
Engine Type
2.3 (4 Cylinder)
Transmission
Manual
2WD / 4WD
2WD
Total Drop
3 front 5 rear
Tire Size
225/60R15
I have pretty much the same problem, just a side question, I put in a cone style filter and I just unplugged the two lines that plugged into the airbox, are one of those or both vacuum lines? should I plug them and would that solve the problem?
 

Sponsored Ad


Sponsored Ad

Staff online

Today's birthdays

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Truck of The Month


Shran
April Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top