low temp
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low temp
okay my truck runs a really low temp. Usally it doesn't get to where it stays(which is the lower part of the M in Norm) Though it is winter here and its been 40 degress or lower out side that might casue it. Though i have a 180 thermo on it and i feel like it hasn't opened in about a month. i checked it and it works fine. i just think it hasn't opened becasue it hasn't been warm enough. Now correct me if i am wrong when the antifreze and water go into to cool the engine it also cleans out carbon deposits and helps agenst wear. I noticed that when its cold my ticking gets louder but after driving long distances like a 2 and a half hour trip the ticking stops. should i switch to a lower thermo and if so how low. i tried running the temp up in high rpms in 3rd and 4th but i can't get it high enough without speeding. any ideals
Hotshot
Joined: May 2004
Posts: 12,170
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From: The hills of No. Calif.
You should be running a 195º thermostat in there. The EFI needs hotter temps than a carbed engine to properly combust the fuel.
The coolant does provide lubrication for the water pump, but as for cleaning out carbon, you don't get carbon build-up in the cooling system...if you do, then something is seriously wrong!
Lower combustion temps can actually promote the build-up of carbon in the combustion chambers, so a hotter burning engine burns cleaner as well.
I wish my ticking would stop on longer trips. It just gets worse the longer/faster I drive it. I need to stop driving the thing for a week or 2 so I can start my engine transplant, but I keep needing my truck for work!
The coolant does provide lubrication for the water pump, but as for cleaning out carbon, you don't get carbon build-up in the cooling system...if you do, then something is seriously wrong!
Lower combustion temps can actually promote the build-up of carbon in the combustion chambers, so a hotter burning engine burns cleaner as well.
I wish my ticking would stop on longer trips. It just gets worse the longer/faster I drive it. I need to stop driving the thing for a week or 2 so I can start my engine transplant, but I keep needing my truck for work!
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okay so a 195 thermo? not any higher? Like everyday it gets cooler outside the temp drops more and morei am having troble getting it above M on NORM. i have head that if i run the engine high (upper part of N) i can clean out all or most of those deposits with heat. though i have heard of something call vacume pump that cleansout the entire engine of carbon deposits, but i can't figure out who here does it. any website on it?
Hotshot
Joined: May 2004
Posts: 12,170
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From: The hills of No. Calif.
195º should be just fine. I haven't heard about using a vacuum pump to remove carbon, maybe you should Google it. The old method I recall was to use a mister to spray water down the the intake with the engine running at about 1500 RPM. Lightly mist though, too much water suddenly can cause catastrophic hydraulic locking of the engine.
Nowadays there all sorts of carbon removal products on the market, from fuel additives to intake sprays. A trip to the auto parts store should turn up something.
Nowadays there all sorts of carbon removal products on the market, from fuel additives to intake sprays. A trip to the auto parts store should turn up something.
Post Fiend
Joined: Apr 2005
Posts: 5,720
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From: Washington state
Ford temp gauges are notoriously inaccurate, take a thermometer reading in coolant tank after engine is hot, leave cap off and run engine to temp, dangerous removing radiator cap on hot engine.
Ford computer controlled FI engines are designed to run with 195d F thermostats, any cooler and causes a fuel mixture and shifting problems for computer.
Ford computer controlled FI engines are designed to run with 195d F thermostats, any cooler and causes a fuel mixture and shifting problems for computer.
Last edited by 96_4wdr; Nov 22, 2005 at 09:52 AM.
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really then thats odd becasue when my truck was originaly purchased fromt he dealership the OEM part was a 170 thermo i beleave. thoughi haven't had much problem with the accuraccy of the temp reading of the thermo and i do beleave its right on this case but i will give it a lil test se what pops up
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okay so i finnially got time to install the 195 thermo and right off the bat the engine warmed up quicker and ran warmer. this weekend when i go to see my Gf(about hour away interstate) i am going to try a carbon burn off. How hot should you let the engine get when its to much using the in car engine temp?
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Hotshot
Joined: May 2004
Posts: 12,170
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From: The hills of No. Calif.
You just want it to stay in the Normal range, but in cold weather I wouldn't expect to see it get above the halfway mark if even that high. If it's getting hotter than that it's not a problem with the wrong temp thermostat, it's more like a coolant circulation problem. Partially plugged radiator (either internally or externally) is probably the most common cause, but it can be as simple as old hoses which partially collapse when they get hot restricting coolant flow, or a water pump going bad. I've seen a water pump which appeared good, that is to say that the bearings were good and it didn't leak, but when I pulled it off anyway I found the impeller corroded so that it was barely pumping.
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