Who likes a challenge?
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 2
Who likes a challenge?
2003 F-150 SuperCrew
New Fuel pump, filter, crankshaft sensor
After much trouble starting (spray in throttle body repeatedly) Truck will idle normally and throttle to 4000 rpm normally, seemingly no fuel or timing issues.
reversed up slight incline 20-25 mph. Shift to neutral,idles rough, then into drive starts to stall then dies. Back to square one, wont start.
What gives? Who can solve this tricky one
New Fuel pump, filter, crankshaft sensor
After much trouble starting (spray in throttle body repeatedly) Truck will idle normally and throttle to 4000 rpm normally, seemingly no fuel or timing issues.
reversed up slight incline 20-25 mph. Shift to neutral,idles rough, then into drive starts to stall then dies. Back to square one, wont start.
What gives? Who can solve this tricky one
Senior Member
Joined: Jan 2011
Posts: 1,433
From: Arlington, WA
Check all your vacuum lines and the EGR tube. This can be done easily with carb and choke spray. While the vehicle is running, spray the lines and connections. If the idle increases when you spray, then you have a vacuum leak.
Former Sponsor
Joined: Nov 2012
Posts: 3
From: Pickering / Downsview
No engine light, correct?
Can you pull at least one plug, and post a photo of the electrodes, threads, and core?
Also check the vitals:
-Fuel pressure at prime, idle
-Fuel pressure under load while driving
- Are you getting spark?
Can you pull at least one plug, and post a photo of the electrodes, threads, and core?
Also check the vitals:
-Fuel pressure at prime, idle
-Fuel pressure under load while driving
- Are you getting spark?
