Dies on highway
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Dies on highway
Over the last few days my '93 F150 2WD IL6 stalled at around 70 mph. Twice I pulled over, came to a full stop, turned the key off and then restarted it. Then I continued like nothing ever happened. Let's say the stalling happened right in the middle of a 40 mile trip. Last night I replaced the fuel filter and fuel pump relay. Today it stalled on me again on the way to work but instead of continueing on the highway I took the back roads home.
The wires and plugs are about 7 months old with maybe 15k miles so I'll look at the plugs and ohm out the wires just in case but I'm thinking fuel pump. I would have to get a fuel pressure tester. I could really use some help diagnosing this problem.
BTW when I changed the fuel filter there was quite a lot of pressure which I thought was unusual as I had not seen that the other times I changed the filter. Maybe it was because this time I disconnected the filter immediately after turning off the engine.
I thought about a gas vent problem but the tank actually has a leak about 3/4 full so that's not it and it is the only tank as the rear was removed about 2 years ago.
TIA,
Alex
The wires and plugs are about 7 months old with maybe 15k miles so I'll look at the plugs and ohm out the wires just in case but I'm thinking fuel pump. I would have to get a fuel pressure tester. I could really use some help diagnosing this problem.
BTW when I changed the fuel filter there was quite a lot of pressure which I thought was unusual as I had not seen that the other times I changed the filter. Maybe it was because this time I disconnected the filter immediately after turning off the engine.
I thought about a gas vent problem but the tank actually has a leak about 3/4 full so that's not it and it is the only tank as the rear was removed about 2 years ago.
TIA,
Alex
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Did this start hapening within 20 miles or so of filling up with gas? I had a similar problem once and traced it back to the gas station. I filled up while a tanker truck was dumping fuel in the station's tank. I got a whole tank of contaminated gas which kept plugging up the bronze fuel filter in the carb. I installed a large aftermarket clear plastic fuel filter in line before the stock filter so I could change it when it trapped a lot of material. After a couple of tanks of fuel the contaminates got filtered out and the problem went away. You might check with the station where you buy gas to see if any other customers are having problems. Hope this helps. Bob
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I will check with the station. I buy gas pretty much every day due to a leak in the tank at around 3/4 full and it stalled with a new fuel filter. I was changing the plugs and noticed that they seemed kind of loose. I do this stuff my self so that's kind of embarrassing but there it is. Rain stopped me 1/2 way through the tune up. The old plugs were gapped at 42 and somewhere in here I read to gap them at 46 with stronger coils so I'm trying that too. The 3 plugs I pulled out so far look identical in that there is a light grey color to them. I never could read plugs. I just know they're not fouled.
Alex
Alex
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Gas station and some other customers say the gas is fine. My parts man says if the oil pressure is low on Fords that the fuel pump will turn off. Any truth to that? I had an oil pump put in not long ago but the guage has always read low. Especially the last week or so. Disconnecting the wire at the sending unit briefly doesn't kill the motor but re-attaching it does make the rpm's go up a little for a few seconds. Any thoughts?
Thanks
Alex
Thanks
Alex
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Originally Posted by chexmix
Your ignition control module may be failing also, pull it and make sure it has grease on the back so to distribute heat.
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I had the same problem. It's still sorta giving me headaches but I can get you in the right direction.
EGR valve
EGR sensor
Need new ones
Bad
I can almost guarantee that is what is causing your problem. Give it a shot and tell me how it goes.
EGR valve
EGR sensor
Need new ones
Bad
I can almost guarantee that is what is causing your problem. Give it a shot and tell me how it goes.
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Originally Posted by F-150battlemaster
I had the same problem. It's still sorta giving me headaches but I can get you in the right direction.
EGR valve
EGR sensor
Need new ones
Bad
I can almost guarantee that is what is causing your problem. Give it a shot and tell me how it goes.
EGR valve
EGR sensor
Need new ones
Bad
I can almost guarantee that is what is causing your problem. Give it a shot and tell me how it goes.
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Recently I had code 332. EGR opening not detected. I changed the thing that controls the vacuum (green line). Pressure transducer? That took care of that. It's a junk yard one that's on there now. I would like to know how to test it. As far as the ignition control module is concerned I thought that those worked or they didn't. I would also be interested in knowing how to test that. As it stands I'm not throwing codes at all. Just for good measure I'll check again. I'm a little hesitant to just start replacing the fuel pressure regulator $80 and the fuel pump $180. An EGR is $100 and the position sensor is $50 ish if I'm not mistaken. I need to learn how to test all this stuff. I've got a little time to stew on this and wait for the solution to come. Maybe from here.
Alex
Alex
Last edited by Alex2507; Jul 20, 2007 at 04:45 PM.
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From: San Jose , ca
quitting engine
Originally Posted by Alex2507
Over the last few days my '93 F150 2WD IL6 stalled at around 70 mph. Twice I pulled over, came to a full stop, turned the key off and then restarted it. Then I continued like nothing ever happened. Let's say the stalling happened right in the middle of a 40 mile trip. Last night I replaced the fuel filter and fuel pump relay. Today it stalled on me again on the way to work but instead of continueing on the highway I took the back roads home.
The wires and plugs are about 7 months old with maybe 15k miles so I'll look at the plugs and ohm out the wires just in case but I'm thinking fuel pump. I would have to get a fuel pressure tester. I could really use some help diagnosing this problem.
BTW when I changed the fuel filter there was quite a lot of pressure which I thought was unusual as I had not seen that the other times I changed the filter. Maybe it was because this time I disconnected the filter immediately after turning off the engine.
I thought about a gas vent problem but the tank actually has a leak about 3/4 full so that's not it and it is the only tank as the rear was removed about 2 years ago.
TIA,
Alex
The wires and plugs are about 7 months old with maybe 15k miles so I'll look at the plugs and ohm out the wires just in case but I'm thinking fuel pump. I would have to get a fuel pressure tester. I could really use some help diagnosing this problem.
BTW when I changed the fuel filter there was quite a lot of pressure which I thought was unusual as I had not seen that the other times I changed the filter. Maybe it was because this time I disconnected the filter immediately after turning off the engine.
I thought about a gas vent problem but the tank actually has a leak about 3/4 full so that's not it and it is the only tank as the rear was removed about 2 years ago.
TIA,
Alex
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Originally Posted by marioland
It could be a partially blocked exhaust. Due to a melted cat. It will be fine under normal loads, but when you get on the highway the back pressure buildup causes the engine to stall.
Thanks
Alex
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Spent all day Sunday checking connections and the like under the hood. I found what was a potential vacuum leak in the line going to the booster and regreased the ignition control module as it looked kind of dried out.
Yesterday the truck went 25 miles each way to work and back. Today it went 45 miles each way. I don't know what exactly the problem was nor do I know it's fixed. I'm sort of interested in those MDS? ignition control modules. My voodoo trouble shooting technique has me thinking that that might be my problem, like it might be on the way out. Is the MDS? worth it or is it just hype?
Alex
Yesterday the truck went 25 miles each way to work and back. Today it went 45 miles each way. I don't know what exactly the problem was nor do I know it's fixed. I'm sort of interested in those MDS? ignition control modules. My voodoo trouble shooting technique has me thinking that that might be my problem, like it might be on the way out. Is the MDS? worth it or is it just hype?
Alex