92 4.9 wont start
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Tuned
Joined: Nov 2007
Posts: 370
Likes: 3
From: SoCal
92 4.9 wont start
I posted this in the older F150 section also.
I am normally in the 7.3 or Excursion area, but my kid got a new-to-him 92 F150 with the 4.9L inline 6. The PO(s) really did a number on this poor truck - many loose nuts/bolts from drive shaft to body mounts. Anyhow, the kids been driving the truck for the past week without any issue until today. Came home complaining about high idle. I did some searching and found that this is a common issue and proceeded to check the obvious first being vacuum lines, TPS, IAC. In doing the testing, the starter failed. Removed the starter to find that the solenoid came loose from the starter body. More loose bolts, I know. Fixed that and tried to restart - no go. More digging revealed an improvised wire wrapped around one of the fuel lines in the rear of the motor. It connects to a harness wire red/white stripe. The other end is a mystery. Could it be this wire is preventing engine from firing? Tested 5.1V with key on. Please see pic and let me know if it looks familiar to any of you. As I am currently stuck on where this wire goes and what to check next...
I am normally in the 7.3 or Excursion area, but my kid got a new-to-him 92 F150 with the 4.9L inline 6. The PO(s) really did a number on this poor truck - many loose nuts/bolts from drive shaft to body mounts. Anyhow, the kids been driving the truck for the past week without any issue until today. Came home complaining about high idle. I did some searching and found that this is a common issue and proceeded to check the obvious first being vacuum lines, TPS, IAC. In doing the testing, the starter failed. Removed the starter to find that the solenoid came loose from the starter body. More loose bolts, I know. Fixed that and tried to restart - no go. More digging revealed an improvised wire wrapped around one of the fuel lines in the rear of the motor. It connects to a harness wire red/white stripe. The other end is a mystery. Could it be this wire is preventing engine from firing? Tested 5.1V with key on. Please see pic and let me know if it looks familiar to any of you. As I am currently stuck on where this wire goes and what to check next...
Thread Starter
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Tuned
Joined: Nov 2007
Posts: 370
Likes: 3
From: SoCal
Really strange thing is the truck started this morning after it wouldn't fire yesterday. Now the CEL is on so I have something to go off of.
New User
Joined: May 2013
Posts: 4
Likes: 0
From: Knoxville, TN
The sender is hard to see, but you can feel it. It is on the top end, near the back on the left side. The intake makes it hard to see from up top. I could see it from underneath when I changed the O2 sensor, but not reach it. Once you figure it out, it isn't hard to change in the blind.
Thread Starter
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Tuned
Joined: Nov 2007
Posts: 370
Likes: 3
From: SoCal
The sender is hard to see, but you can feel it. It is on the top end, near the back on the left side. The intake makes it hard to see from up top. I could see it from underneath when I changed the O2 sensor, but not reach it. Once you figure it out, it isn't hard to change in the blind.
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