Cold weather/ Fuel problems
Thread Starter
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Senior User
Joined: Feb 2008
Posts: 307
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Cold weather/ Fuel problems
Ok, so i go out to start my truck yesterday morning, the 89, and discover that my fuel pumps are not cycling. I've came up with two possibile problems.
1. My fuel pump froze, sicne it's only about 5 degrees, and i only have about a quater tank of gas.
Or
2. Condensation in my wiring harness plugs froze and killed the conection.
The questions: Do these sound reasonable? If so, whats the best way to go about fixing them?
1. My fuel pump froze, sicne it's only about 5 degrees, and i only have about a quater tank of gas.
Or
2. Condensation in my wiring harness plugs froze and killed the conection.
The questions: Do these sound reasonable? If so, whats the best way to go about fixing them?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
Perhaps the fuel pump relay, or it's socket, is bad?
Do you have the inertia switch that might need to be reset?
No power from the ignition switch to the above?
Subford used to have very insightful replies to fuelpump issues, have you tried 'search'?
Do you have the inertia switch that might need to be reset?
No power from the ignition switch to the above?
Subford used to have very insightful replies to fuelpump issues, have you tried 'search'?
Thread Starter
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Senior User
Joined: Feb 2008
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I haven't had a chance to do too much testing, but i did check the inertia switch. That's not a problem. I had the tank down about a month ago and i know that then plug was good, then. I will try a search right now.
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Senior User
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Well my search wasn't very poductive, so i guess i'll do some testing when i get home tonught.
Quick question, If i froze my fuel pump will i have to replace it, or will it start working if i warm it up or put more gas in it?
Quick question, If i froze my fuel pump will i have to replace it, or will it start working if i warm it up or put more gas in it?
Elder User
Joined: Nov 2005
Posts: 834
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If the truck has been driven in the past week or so I don't think you could have enough water in the tank to actually freeze the fuel pump and damage it.
I think it most likely that you are not getting power or ground to the pump. Maybe you had a marginal connection due to corrosion, and the cold temp made everything contract and you lost connection.
Please post your findings when you solve this problem.
Frank
I think it most likely that you are not getting power or ground to the pump. Maybe you had a marginal connection due to corrosion, and the cold temp made everything contract and you lost connection.
Please post your findings when you solve this problem.
Frank
Thread Starter
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Senior User
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When I got home from school yesterday i pushed it into the shop and let everythung warm up, while i pulled apart the connecters near the fire wall. After spraying them with wd-40 I dried them out with the air nozzle. After this i filled the plugs up with tune-up grease and put them bck together. I went in the cab and it started, but it ran like crap, so i changed the fuel filter and now it runs better than it has in months.
Fleet Mechanic
Joined: Nov 2003
Posts: 1,500
Likes: 2
I have the same problem and know the solution...replace your fuel pump relay with a dry one. Up here in Maine. moisture oftern gets into these buggers and on a cold night, they freeze solid. Sometimes lightly banging them on the master cylinder will free it up. I keep a couple in my nice warm draw in the house with the lugs downn to allow the m oisture to drain out and, viola, problem solved.
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Elder User
Joined: Nov 2005
Posts: 834
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I have the same problem and know the solution...replace your fuel pump relay with a dry one. Up here in Maine. moisture oftern gets into these buggers and on a cold night, they freeze solid. Sometimes lightly banging them on the master cylinder will free it up. I keep a couple in my nice warm draw in the house with the lugs downn to allow the m oisture to drain out and, viola, problem solved.
Thanks Frank
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thejon2524
I find it interesting that your first post was
"Saw the site, was interested, look foward to sharing information about trucks."
9 posts and 7 days latter it is
"Thread should be re-titled, truck doesnt run because im lazy. " '
How is that sharing information about trucks?
Sounds to me like Rostena is a young guy still in school. He might not have a lot of time, money, or knowledge. He came here for help which was smart. I don't think he is lazy.
Frank
I find it interesting that your first post was
"Saw the site, was interested, look foward to sharing information about trucks."
9 posts and 7 days latter it is
"Thread should be re-titled, truck doesnt run because im lazy. " '
How is that sharing information about trucks?
Sounds to me like Rostena is a young guy still in school. He might not have a lot of time, money, or knowledge. He came here for help which was smart. I don't think he is lazy.
Frank