Help - Won't Start!!!
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Senior User
Joined: Feb 2000
Posts: 369
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Help - Won't Start!!!
1995 F150 4x4 XLT, 4.9L 5 speed, dual tanks
I worked on my truck yesterday and now it won't start. I changed the serpenine belt, and tried to fix a broken dash mount. It ran after I changed the belt, but after I loosened up the dash then put it back in, it cranked slow. I charged up the battery overnight, however, it cranks but no start. I don't think that these are related but it does seem like a coincidence.
Nevertheless, I pulled a spark plug and didn't see a spark. I then attached a tester and I checked the spark at the coil and at the plug, which looked OK. The spark at the plug as a little weak (maybe???). I checked the coil primary and secondary voltage, and it looked OK which where ~.6 ohms and 8500 ohms, respectively.
I don't hear the fuel pumps kicking in when I turn the key to the Run posiition, but I don't get a single fire after I sprayed throttle body cleaner or when I poured a little alchohol down the throttle body. The Haynes manual says that if I don't hear the fuel pumps then I should check the EEC-IV PCM for voltage. However, the checks they refer to are cryptic and nonsensical.
How can I simplify this check?
I worked on my truck yesterday and now it won't start. I changed the serpenine belt, and tried to fix a broken dash mount. It ran after I changed the belt, but after I loosened up the dash then put it back in, it cranked slow. I charged up the battery overnight, however, it cranks but no start. I don't think that these are related but it does seem like a coincidence.
Nevertheless, I pulled a spark plug and didn't see a spark. I then attached a tester and I checked the spark at the coil and at the plug, which looked OK. The spark at the plug as a little weak (maybe???). I checked the coil primary and secondary voltage, and it looked OK which where ~.6 ohms and 8500 ohms, respectively.
I don't hear the fuel pumps kicking in when I turn the key to the Run posiition, but I don't get a single fire after I sprayed throttle body cleaner or when I poured a little alchohol down the throttle body. The Haynes manual says that if I don't hear the fuel pumps then I should check the EEC-IV PCM for voltage. However, the checks they refer to are cryptic and nonsensical.
How can I simplify this check?
Last edited by ajstephan; Nov 21, 2005 at 03:49 PM.
Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
the fuel shut off is in that area did you trip it?
maybe you pinched a wire.
describe exactly what you did in the dash area and we may be able to haelp you.
the computer is also in that area.
maybe you pinched a wire.
describe exactly what you did in the dash area and we may be able to haelp you.
the computer is also in that area.
Thread Starter
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Senior User
Joined: Feb 2000
Posts: 369
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Yep, it was the inertia switch. I didn't see how those were related, but I finally decided to check it since it could be related. The Haynes manual said it was on the driver's firewall, the opposite from where I worked. However, I couldn't find it. I then checked the owner's manual, and it's under the right kick panel -exactly where I was working! Set the switch and bingo!
Whew!
Whew!
