Van Idling High Intermittently
Thread Starter
|
Junior User
Joined: Nov 2005
Posts: 84
Likes: 0
Van Idling High Intermittently
1994 Ford 350. When you start the engine it idles high then comes down and seems okay. Then after driving awhile the idle goes up. The codes pulled are 311 Thermactor, 332 EGR insufficient flow, 411 and 412 both rpm related. So where do I start?
A side note the air bag light blinks 5 times then 1 time and stops. So it must be trying to
A side note the air bag light blinks 5 times then 1 time and stops. So it must be trying to
Fleet Mechanic
Joined: May 2011
Posts: 1,414
Likes: 10
From: Thornhill , Ontario
My guess would be egr valve or connections to it....I have a Diesel and 460 Carbed, so slap me now....But my last Van was a 4.9 six with Propane (Big Time POS) and when it flipped out on me like that , it was rusted ERG line....but I had to replace the assembly because it was too gone....
Thread Starter
|
Junior User
Joined: Nov 2005
Posts: 84
Likes: 0
The engine is 5.7liter. Today I tried to operate the engine as if i had an egg under my foot. Trying to avoid the egr from being actuated. The van operated fine all day including runs up to 45 mph. Does the egr get actuated by simple vacumn? Is there any feedback from the egr telling the computer how far it is opened? Or is the TPS what tells the computer something about how the egr is operating?
Cargo Master
Joined: Sep 2012
Posts: 2,112
Likes: 286
From: Eastern TN
Typo intending 5.8 or GM 350 conversion? 
IIRC the EGR valve has both vacuum and electrical connections.
Sixto
'93 E150 Chateau 5.8 185K miles
IIRC the EGR valve has both vacuum and electrical connections.
Sixto
'93 E150 Chateau 5.8 185K miles
Trending Topics
Thread Starter
|
Junior User
Joined: Nov 2005
Posts: 84
Likes: 0
When the van is idling high I can turn the engine off and restart it and idle is fine. I can rev the engine and idle stays fine.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Thread Starter
|
Junior User
Joined: Nov 2005
Posts: 84
Likes: 0
Got around to putting an IAC in the van and it fixed the problem. Actually it was easy to get to from the front and the hump didn't have to be removed. I drove it a coupld days before declaring it fixed. No more high idling. The one I replaced was full of deposits.
Thread
Thread Starter
Forum
Replies
Last Post
Hit Man X
1987 - 1996 F150 & Larger F-Series Trucks
4
Nov 9, 2002 09:13 PM