Ford F-150 - 1997-2003 :: 1998 4.6L - Temp Gauge Inoperative - P0125 Code
Sep 17, 2013
My son bought his first truck, 1998 Ford F150 Supercab 4.6L Auto. (Proud of Him)
Salvage Flood Title, looks like engine been replaced. (Not so proud of him).
Anyway, vehicle seems to run and drive fine, however, failed emissions test.
P0125 Code pops up, Temp Gauge is not working, pegs all the way hot after truck is running, changed out Both ECT's in front of engine, one is right beside the other, I guess one goes to PCM and other to Gauge.
Now Gauge is reading all the way cold, let run for over 30 minutes and still shows nothing on Gauge...
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Problem: The exterior temp. gauge is blank.
It used to fade in and out and I discovered if I pushed the button that switches from degrees F. to degrees C. it wold come on for a bit, but no more. It's just blank.
I think I've seen a thread on here about similar issues but I was unable to find it. I'm also not sure how to take the overhead console off yet. The console consists of ext. temp gauge, sun glasses compartment, and compartment for a garage door opener.
Some truck specs:
Year: 2001
Model: F150 Super-crew
Motor: 4.6L
Mileage: 250,000
Color: Silver
Original motor, second transmission.
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I have a 2002 supercrew 5.4 triton. My coolant temp gauge is acting up. When it starts up its obviously in the cold range but when the truck begins to get up to temp, the gauge only goes up 1/4 full. What it can be?
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I just bought a 97 f-150 from my dad, there are some electrical issue's but the main one seems to be battery drain.
I have noticed with the truck off key in my pocket, the a/c doors keep trying to move and the a/c head has power to it.
I know the engine has been replaced, with about 20k on it.
The temp gauge pegs w/o getting hot, and it even turned over once while we were getting in the truck. Again key in pocket.
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97 f250 4.6l engine pegs the temp gauge after start-up. the oil pressure light comes on then after a few miles down the road anti-freeze blows out the pressure cap (15LB) then the temp goes down ,the oil light goes off and everything is normal. no its not the thermostat, i changed that and it still does it. whats up with that?
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My '97 F250 5.4L is pumping coolant on to the top of the motor which is burning off causing it to smoke like it's overheated but the temp gauge is operating in normal range. I'm losing coolant but can't see where. It's not going to the ground. It just pools up on the top of the motor. I've already replaced the water pump in the last 2 weeks because of the same issue. It stopped for a few days but now it's back again. Bad water pump from O'Reily's or is there some other issue here? I've checked while the motor's running and can't see where the coolant is coming from and there's no coolant coming out of the bleed hole in the top of the new water pump. I need this truck up and running.
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I am looking at a 1997 F150 with a 5.4 in it, guy who owns it says if you drive it down the street the temp gauge climbs and then the truck goes into limp mode but if you check the engine temp under hood it is nowhere near overheating. Where I should start to look for a problem here? If this is too complicated I will pass on the truck, its not worth it to me to get this truck if it is going to be a nightmare. I have a 2000 with a 4.6 that runs great so this would just be a spare for me, but would like to have it because its in such nice shape.
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1998 f150 4.6 4x4 auto 180k .... Runs 100% other than a strange and inconsistent overheating issue.
On cold startup truck will warm up. Then the temp gauge drops to practically 0. After 15-20 seconds gauge shoots up to max and then falls back to normal after 15-20 seconds. Then it'll go back to driving normally. At some point it pukes.
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I own a 1997 ford f150 V6 engine and I have problems with the electrics. I turn the key on and the engine starts up runs great but I then look at the gauges and not one moves at all the. No fuel when i have just filled up,no tep,no oil,no battery all read nil. I went a drive and the speedo reads 0 it does not move but the truck drives great. Could it be a fuse, does a fuse control the gauges, which one it could be. I have lifted the hood and under the hood on the drivers side there is a box with small and larger fuses.There is one that is very small and the colour is white that's blown. Would you no what that fuse is for.
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Finish a job yesterday and go to start my 98 F-150...4.6 and get the dreaded click. All has been fine. Firewall relay clicking, so crawl underneath in the slop and snow and the main battery wire corroded off the starter solenoid. Go back up top and turn the key to run position, crawl back underneath and short that wire to the other main terminal that feeds the 12 volts into the starter. Truck starts right up. That gets me home, I found a 4 gauge lug in my electrical stuff, clean up the wire and crimp it on ( actually a smoosh with a vice-grip cause my crimper won't get in there and trying to solder in that position wasn't gonna' work). Replacing that cable and how hard was it to pull it out of that loom that it shares with other wires? I was thinking just run a separate cable in a new loom and zip tie it to the other loom? I was guessing it is 2 gauge? Looks like about 4' would be enough to go from the battery to the starter.
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Was driving my truck I have a 97 f150 4x4 4.6L, btw. The heater started blowing cold air and I looked at the temp gauge but it was showing lower than it normally does and then, after a couple of miles or so I looked at the temp gauge again. By this time I was in my driveway. And it was overheating it might have been that way before I looked at the temp gauge again. But any way I opened the hood didn't see any leaks, all my hoses were hot except the top heater hose. Also checked the oil it was full and coolant was too, what this could be? Sounds like a t-stat to me? But could be worse. Also forgot to mention that the oil had no signs of water in there nor the expansion tank cap !
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I just bought a 98 F150 V6 Manual transmission 2wd truck. Its a clean truck and I'm liking it so far but its got a couple minor issues. Whats the point of buying a truck if you don't get to work on it??
The High Beams don't work at all. Low beams are fine. I've put new bulbs in, and fuse 16 in the passenger compartment has continuity. I'm suspecting the multiple function switch, because when I pull out to engage the high beams, nothing happens. The indicator on the dash doesn't come on, and the low beams don't turn off either.
The second issue is the coolant gauge doesn't read. When I turn the key to the on position, the needle on the gauge moves up just a bit, but it never moves after that. Anything to check?
There are a couple other minor things like the e-brake light on the dash doesn't always turn on, but I can deal with that.
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1998 F150, XL, 4.6, auto 138k miles. Idles perfect, give it gas 1 time, fine. Second time it sputters. Third time it sounds awful but will Idle perfect. Put in drive, bucks, sputters, jumps, and damn near dies. Threw code P1747 EPC solenoid. Next day truck runs perfect check engine light goes out. Two weeks go by starts to sputter again and check engine light comes back on. Bad ECM?
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I've got a '98 F150.throwing codd 402, excessive flow EGR, also the oil pressure drops to absolute zero only when gear shifts but comes right back up. No knocking or other distress sounds in engine. I know I'm in need of an oil change. I already searched a bit and decided to swap out the DPFE sensor which I did purchase from the dealership. No code as of yet but what could that pressure drop be? Could a simple il change and filter fix that?
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I have a 98 F150 4.2L with code P0301 Cylinder 1 Misfire.
This is what I have done so far. New plugs, coil pack, plug wires, TPS, EGR, EGR Vacuum control regualier, DMCP, canister, all of these parts are new and was bought from the ford place. Have taken the egr value, and egr value bracket off to see if carbon blockage was present, but it was clean. It was clean in the motor also. Have blown air through the metal tube that connects to the egr value and it come out the tail pipe very good, so no blockage their. Have cleaned throtle body and injectors. Have tested fuel injector with tester and it works correctly. Motor holder pressure. Have correct fuel pressure.
Do not have any vacuum leaks, it holds vacuum correctly. Crankshaft sensor is fine. Went throw 4 cans of break parts cleaner, spraying on intake while motor was running, motor did not idle up or change. I have done all this and it still shows code P0301, and it still skips. Here's the catch, if you unplug the vaccum off the egr the misfire goes away, or unplug the EGR vacuum control regulator it goes away, or if you unplug the DMCP sensor it goes away, it does not matter witch one you unplug, the misfire goes away.
I have had several different test done the the truck, but all the test only show that one code P0301, they do not show any other codes, or problem's with my truck.
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P0306 (ok #6 missfire) with P0171 & P0174 --- Do I chase electrical or fuel or both. Afraid to assume anything but probably would normally address the misfire electrical first.... Don't want to go down that 'primrose path' if others have been there first!
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For reasons I can't figure, the Temp gauge on the wife's Explorer is shooting from normal to high in just seconds. Then, it drops back to normal. When I looked at it this afternoon, I noted 2 things.
1) There was no sign of a coolant leak or overheating.
2) There wasn't ANY coolant in the tank!!!!!!!
The truck has evidently been running fine while this is going on.
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I have received a code twice during really cold weather and I think it is P0125. This says that the cylinder head temp. sensor is recording too low of operating temperature. The question is two fold. What happens if you do not change it? Second I have read that you have to remove the whole intake manifold to replace it. Any easier way to replace it than removing the whole intake manifold? I have looked for the darn thing and can not even see where it is located.
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My 4.2L died all of a sudden, it cranks but won't start. Checked the harness side to coil packs, pos. signal but no neg. Tried a code reader keeps coming back link error. Does this mean PCM is fried?
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I just Put an 98 1.8 T engine into a 2000 2.8 passat , Everything is working fine , But The Tachometer , The Rpm And The temperature Gauges in the cluster are not working ... The Fuel Gauge also Beep and indicate low fuel when i'm turning ... Actually , the car has the V6 Cluster , i switch those and it make no difference ....
All the wires are hooked up in the ecm compartement , each wire with good color ...
Is someone has both wiring diagram of ecm compartment plug ?? 2000 v6 and 98 1.8T
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