v10 start issue - no codes
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5th Wheeling
Joined: Mar 2009
Posts: 28
Likes: 3
v10 start issue - no codes
Hi all. Its a nice 111 degrees here in Phoenix today.
My f250 which i use once or twice a month had a pain getting started on some errands today. After 10 to 15 start attempts it would start but showed no signs of running on other crank attempts. When it started it seemed to run fine.
No codes.
I put a fuel pressure gauge on and it's always fine start or not (new fuel pump less than a year ago).
I disconnected plug #1 coil and put a timing light there. When it wont start the cylinder is flashing same as when it is a running and I get a healthy start.
I replaced the idle air control (IAC) valve about 2 years ago (or literally about 300 miles ago) and that seemed to back then give me similar no code hard starts. When i replaced it I recall it appeared oem on 185k miles and had much black carbon in the passage way. The new one is still bright and shiny from the outside but i havenet touched it yet.
What would you check or do next? Do i shotgun and blame the IAC again?
My f250 which i use once or twice a month had a pain getting started on some errands today. After 10 to 15 start attempts it would start but showed no signs of running on other crank attempts. When it started it seemed to run fine.
No codes.
I put a fuel pressure gauge on and it's always fine start or not (new fuel pump less than a year ago).
I disconnected plug #1 coil and put a timing light there. When it wont start the cylinder is flashing same as when it is a running and I get a healthy start.
I replaced the idle air control (IAC) valve about 2 years ago (or literally about 300 miles ago) and that seemed to back then give me similar no code hard starts. When i replaced it I recall it appeared oem on 185k miles and had much black carbon in the passage way. The new one is still bright and shiny from the outside but i havenet touched it yet.
What would you check or do next? Do i shotgun and blame the IAC again?
Cargo Master
Joined: Nov 2005
Posts: 2,051
Likes: 10
From: TEXAS
If I understand correct, you are saying it is just not starting. But it is cranking...correct?
I had a like problem on another vehicle here in Texas during one of those extreem summers. I ended up replacing the battery and everything worked just as designed. Extreem heat can do some weird things with the battery.
Good Luck,
I had a like problem on another vehicle here in Texas during one of those extreem summers. I ended up replacing the battery and everything worked just as designed. Extreem heat can do some weird things with the battery.
Good Luck,
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domokdow
1968-Present E-Series Van/Cutaway/Chassis
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Aug 24, 2012 02:14 AM
