Battery light flickers
Thread Starter
|
New User
Joined: Jan 2016
Posts: 5
Likes: 0
Battery light flickers
I went to start truck and battery light was flickering when the glow plugs and injectors were buzzing. Once all the racket is done the light stays on. Truck starts but then idles rough and stalls within a few minutes.
I took batteries and alternator in to get tested; all tested fine. I get ficm sync, ficm voltage is 48.5, IPR and ICP both read what they should. The alternator is a reman for a 97 f250. Could it be the alternator giving up. I did get high voltage code on #8 injector once . Any ideas? It's a 2005.
I took batteries and alternator in to get tested; all tested fine. I get ficm sync, ficm voltage is 48.5, IPR and ICP both read what they should. The alternator is a reman for a 97 f250. Could it be the alternator giving up. I did get high voltage code on #8 injector once . Any ideas? It's a 2005.
Last edited by tampaviking; Mar 25, 2018 at 08:52 PM. Reason: left year out
Hotshot
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
Looks like a bad alt to me
Just keep in mind a bench test usually spins the alternator Faster then it does at Idle in the truck so it Not the best test to do cause it looks good output on bench but fails in-vehicle
Does a 97 F-250 alternator put out enough amp to properly run a 6.0L It just sounds sketchy to me But it could be Fine I don't know enough about that to say other then sounds sketchy without the research to back it up
The last Alternator I had Bench tested Passed on the bench But failed Ford Pinpoint test below
Charge system diagnostic and test PDF
https://www.ford-trucks.com/forums/a...4&d=1482286527
Just keep in mind a bench test usually spins the alternator Faster then it does at Idle in the truck so it Not the best test to do cause it looks good output on bench but fails in-vehicle
Does a 97 F-250 alternator put out enough amp to properly run a 6.0L It just sounds sketchy to me But it could be Fine I don't know enough about that to say other then sounds sketchy without the research to back it up
The last Alternator I had Bench tested Passed on the bench But failed Ford Pinpoint test below
Charge system diagnostic and test PDF
https://www.ford-trucks.com/forums/a...4&d=1482286527
Postmaster
Joined: Sep 2010
Posts: 3,472
Likes: 2
From: Southern Cal
On a 3 wire alternator, the one terminal detects proper alternator voltage. It's not a "battery" light, it's an alternator charging light. If it's still on with another alternator, it's either bad or not connected properly.
Trending Topics
Hotshot
Joined: Dec 2014
Posts: 17,824
Likes: 3,103
From: Jersey Shore
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
New User
Joined: Jan 2016
Posts: 5
Likes: 0
I cleaned up the engine block and frame grounds and checked the rest. No luck. I am stumped on why it starts and then stalls within a minute. Maybe it has nothing to do with the battery light flickering but they both started at the same time. I did find that the oil pressure sending unit wire was bare and frayed at the terminal on the oil cooler. I don't know if that could cause any issues.
Last edited by tampaviking; Mar 26, 2018 at 07:18 PM. Reason: added stuff
Thread Starter
|
New User
Joined: Jan 2016
Posts: 5
Likes: 0
Cam and crank/ FICM sync is 1. FVP 11.5, FMP 49, FLP 12, IPR 14.7, ICPV .2, after starting FMP 48.5, HPOP 1209, IPR 33. So after it shuts down now the fuel pump sounds real rachety not the smooth pump sound. I have a cap coming in with the valve to check fuel pressure. Could it be the lift pump, the HFCM has fuel/dirt on it.
Thread
Thread Starter
Forum
Replies
Last Post
651_F350_KR
6.0L Power Stroke Diesel
38
Apr 26, 2016 09:01 AM
flybyu26
1999 - 2016 Super Duty
15
Jan 6, 2014 07:44 PM
gofast51004
1999 - 2003 7.3L Power Stroke Diesel
3
Feb 21, 2009 03:51 AM