looking for brainstorming help
Thread Starter
|
New User
Joined: May 2016
Posts: 4
Likes: 0
looking for brainstorming help
my truck is acting up and I'm at a loss on what it is. it was losing power when I would shift into second and third gear, so I replaced the icm. I got it timed back right and took it for a drive and it seemed fine until I hit about 50 then a loud clunck plus a hard jerking motion. and the higher rpm the worse it got. It then started to do so in lower rpm until I could only go in low gear, then it finally died in low gear. it might be getting too much gas but I'm not quite sure. I'm at a loss as to what it could be and so is my friend but he is a state away so over the phone its hard to tell. its a 1986 f150 with a 302 engine. any thoughts would be appreciated.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Wow...
1986 302 V8 engine... EFI or feedback carburetor? Both are computer-controlled in 1986.
When you set the ignition timing, did you first disconnect the SPOUT connector and then re-connect it when you set the base timing?
You can pull the computer's codes, here's one write-up on doing that at home:
Ford Ranger - Testing EEC-IV Equipped Engines
1986 302 V8 engine... EFI or feedback carburetor? Both are computer-controlled in 1986.
When you set the ignition timing, did you first disconnect the SPOUT connector and then re-connect it when you set the base timing?
You can pull the computer's codes, here's one write-up on doing that at home:
Ford Ranger - Testing EEC-IV Equipped Engines
Thread Starter
|
New User
Joined: May 2016
Posts: 4
Likes: 0
no I didn't. I didn't take the distrubuter off I just spun it to get to the second screw of the ignition control module. I marked it with a marker and got it put back and it idled normal and sounded normal when I drove it till it acted up. I have a friend who had to do this on his 89 pickup 300 motor though. I'm thinking ignition coil might be it. it has not started since it died in low when I was trying to get it back home.
Thread Starter
|
New User
Joined: May 2016
Posts: 4
Likes: 0
the clunking sounded like it was coming from under the hood, I was told to check compression but without a gage and being 60 miles away from anywhere to rent one or buy one kind of puts a damper in that for a little while. I discussed tranny but it shifted fine just when it started that clunking it was nasty sounding in every gear except low gear. on the slow treck home I shifted into first to see what it would do and it was that clunking with grinding. I hope its not tranny but that would not explain why it wont start is what I have been told by others I have talked to at work and my friend back home.
Thread
Thread Starter
Forum
Replies
Last Post
44nneedit
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
28
Sep 20, 2019 12:55 PM
7636074460
1973 - 1979 F-100 & Larger F-Series Trucks
3
Nov 16, 2012 09:33 PM
yankeerebel
1973 - 1979 F-100 & Larger F-Series Trucks
15
Nov 12, 2011 03:43 PM
cracker93F150
Ford Inline Six, 200, 250, 4.9L / 300
3
Nov 28, 2004 04:55 PM
Greaseball
1973 - 1979 F-100 & Larger F-Series Trucks
3
Nov 14, 1999 05:12 PM
