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Starts But Then Dies!


Broosedamoose

Active Member
Joined
Mar 10, 2012
Messages
218
Reaction score
31
Points
28
Location
South East Massachusettes
Vehicle Year
2007
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0L SOHC
Transmission
Automatic
2WD / 4WD
4WD
Tire Size
31 x 10.5
My credo
Coming in second just makes you the first loser!
So the truck (2007 4.0 SOHC 4WD) was running fine yesterday but this morning I went to go out and it starts but then the RPM's drop and it dies. I have plenty of fuel pressure at the rail. Every time I start it it does the same thing. Could it be a bad TPS?
 


Rock Auto 5% Discount Code: 81874766E40C6A 5th, 2022
Joined
Sep 13, 2020
Messages
120
Reaction score
17
Points
18
Location
Lagos, Nigeria
Vehicle Year
1998
Make / Model
Ford Ranger
Transmission
Automatic
1. Bad TPS
2. Crank sensor might be bad too
Have you retrieved any codes yet?
 

Dirtman

Former Middleweight Moss Fighting Champion
Supporting Member
Joined
May 28, 2018
Messages
19,339
Reaction score
13,292
Points
113
Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
How soon after start does it die? Common cause of that issue is the ECT sensor as it gets stuck cold and it will be in "choke mode" and as the engine warms up it floods and dies. This takes 30 seconds to a few minutes depending on outside temp.
 

Broosedamoose

Active Member
Joined
Mar 10, 2012
Messages
218
Reaction score
31
Points
28
Location
South East Massachusettes
Vehicle Year
2007
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0L SOHC
Transmission
Automatic
2WD / 4WD
4WD
Tire Size
31 x 10.5
My credo
Coming in second just makes you the first loser!
It starts and the RPM's immediately drop and she dies. Surprisingly there are no codes! If I give it some throttle it will stay running but as soon as I let it return to idle it just dies>
 

Dirtman

Former Middleweight Moss Fighting Champion
Supporting Member
Joined
May 28, 2018
Messages
19,339
Reaction score
13,292
Points
113
Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
With engine cold, remove the IAC valve with it still plugged in. Have a friend turn the key to run, IAC valve should open. If not it's stuck. Try cleaning it, if not replace.
 

Broosedamoose

Active Member
Joined
Mar 10, 2012
Messages
218
Reaction score
31
Points
28
Location
South East Massachusettes
Vehicle Year
2007
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0L SOHC
Transmission
Automatic
2WD / 4WD
4WD
Tire Size
31 x 10.5
My credo
Coming in second just makes you the first loser!
Turned out to be the TPS. I went to Advanced Auto and picked up a new TPS and IAC valve. I replaced the TPS fist and it solved the problem.
 


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