Alternator going bad? Or something else?
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Joined: Oct 2009
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Alternator going bad? Or something else?
Hey all.
Yup, I'm back to ask more questions. Lowdown: '85 F-150, 2 WD, automatic, V8.
I pulled in to check the mail the other day, and the truck just up and died. Sudden lunge forward and stopped. So I took it home, replaced the starter solenoid, and that didn't help much. Improved the sound, but I still needed a jump. Ran great for 2 days, then it started idling so low that it almost stalls, and on my last trip home, I had to press on the gas while cranking the engine to get it to take. If I press on the brake, the engine stalls out.
What do you guys think this is? Could it be the alternator? Or something else? I just had the battery tested back in October, and they said it was great, so I am thinking it's safe to rule that out. I just don't know what else to look at.
Yup, I'm back to ask more questions. Lowdown: '85 F-150, 2 WD, automatic, V8.
I pulled in to check the mail the other day, and the truck just up and died. Sudden lunge forward and stopped. So I took it home, replaced the starter solenoid, and that didn't help much. Improved the sound, but I still needed a jump. Ran great for 2 days, then it started idling so low that it almost stalls, and on my last trip home, I had to press on the gas while cranking the engine to get it to take. If I press on the brake, the engine stalls out.
What do you guys think this is? Could it be the alternator? Or something else? I just had the battery tested back in October, and they said it was great, so I am thinking it's safe to rule that out. I just don't know what else to look at.
Fleet Mechanic
Joined: Apr 2007
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From: patricia ab canada
Is your truck fuel injected or carbed.it sounds ignition related to me,but if fuel injected could be something different. Battery's can fail at any time,they can last 40 years or 40 minutes,if you suspect you ault then take it in and have it tested and your battery.
Senior User
Joined: May 2003
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From: Hermiston
Carbureted would have a metal or chrome air cleaner on the top of the engine. Fuel-injected has a large aluminum ram type intake on top and a plastic air box to one side of the engine. If yours is an 85 it's most likely carbureted. 86 was the first year ford used fuel-injection on any of their engines.
