Ford F-150 - 1997-2003 :: 1998 - A/C Work Intermittently?
Jul 2, 2015
1998 F150 XLT 4x4 4.6L Auto.
Bought this truck two months ago, the lot had the engine rebuilt due to bad bearings, so fresh motor. They forgot to recharge the AC, so I had them charge it when I purchased it. It blew icy cold every things until a few weeks ago. It wouldn't work, then randomly it would, then it would quit, etc. Today it's 97 and I had it on with my kids in the truck, hot air.
I tried turning it off and on, still hot.
I tried seeing if the temperature was stuck and moved it to hot, it got sweltering hot, back to cold, just warm air. There is no difference between vent and max AC.
I went to the store, picked up a refrigerant filler with gauge and a can of R-134. I hooked it to the low end of the system and was surprised that my pressure was about 60PSI. Great, they over filled it at the dealership. I released the pressure down to 40psi and checked, sill hot. I figured maybe something was weird and they might have mixed good refrigerant with bad and that's why it was intermittent.
I released all the pressure down to 0 PSI. I then put on the can of R-134 and filled it to spec. Sill hot air. I removed the harness from the pressure switch and jumped it, getting sparks when I connect the wire, so it's connecting, but still hot air, probably not the switch.
What's going on here? Could they have over filled it and killed the system or something? What is likely broken here? My heater works like a champ, my AC just blows environment temperature air.
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I have an 2003 f150 4x4, 5.4 king ranch.The brakes dont work very well, they dont go to the floor, but just dont do a whole lot when you step on them. 3 different mechanics have tried to fix it without luck. the last one said it need a anti lock part that costs 1200.oo for the part, i just took it home.
148,000 miles on it and i have put brakes on it and had the rotors turned.
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My brother has this truck. Bought it new. Its crowding 200,0000 miles, hes retired and doesn't want a new truck. Problem is this. I have been thru all i know about this subject..........which is not my arena. When you open the door, the dome lights won't come on. Neither door [three door truck] front doors. It has no switch in the jamb............that I can find, that shuts these lights off and on. Least that's the way they were shut off and on; for many years. I looked at the fuse panel schematics in his owners manual. Doesn't show any fuse for these lights, one relay, is there but that's on a different schematic. I am lost everything else ,on that circuit. Push buttons...... on the light...... its self, works. It just doesn't turn those darn interior lights on.
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I have a 98 chevy astro thats been acting up alot these days! just a few eeks ago while checking tranny fluid it kinda smelt burnt. but topped it up anyway. mind you alot else is going on too. in the last year the horn has stopped working, the wipers work when they want to. the stereo stopped working. there was this wierd clicking noise that drained my battery, it was coming from this little black square looking thing under the dash on the drivers side, I removed it and it never happened agian. still haven't replaced it yet seeming as it ran fine without it. it wouldn't start when it was raining so considering the other electrical problems I was having I had a wire kit done on it and it didn't work. it turned out to be a cracked coil, which was replaced. just this last week the heater stopped working and now it started doing this this morning.
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Pulled inside fuses one at a time and it seems to be #15 I hear a clicking sound coming from drivers door and have the fuse pulled for the battery saver relay when hearing it . My test light is dim then pulses when I close the driver's door?
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Several months ago, my truck begins having starting issues. Intermittently, the truck will not start, even though it cranks fine. I have done the following:
- checked inertia fuel switch. Okay.
- checked connections under hood for corrosion. Okay.
- checked fuses & start relay. Also swapped relays with no luck fixing the problem.
- sprayed water at various locations under the hood and bed, since the problem occurs more often when raining. No luck stressing the problem.
- changed fuel filter a couple weeks ago. No luck fixing the problem.
- changed battery over the winter (due to my 8 year old battery was becoming weak). No luck fixing the intermittent starting problem.
- changed the starter a month ago (since the truck stopped cranking). No luck fixing the intermittent starting problem.
- Installed a fuel pressure gauge on the fuel rail.
- Tried banging on the fuel tank with a rubber mallet. No luck fixing the intermittent starting issue.
When the truck refuses to start, the fuel pressure reads 0. Sometimes I can wait 5-10 minutes, and it will start. The truck runs fine after starting.
Sometimes waiting 5-10 minutes will not solve the problem (fuel pressure remains 0). Then, I hook my battery charger to the battery, and the voltage climbs from ~12.5V to 14.7V. The fuel pressure climbs to 30, and the truck starts.
I'm apprehensive to change the fuel pump, since it seems like more an electrical problem than a pump problem. Any diagnostic test that will tell the true problem source?
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200 F150 5.4L Triton, 164K rounds. My odometer has been going on and off intermittently since I bought the truck 4 months ago, no big deal. This morning, though, I started the truck to go to work and my oil pressure gauge was at zero. There wasn't any noise coming from the motor aside from the very slight bottom end knock it had when I bought it, so I figured it's the sending unit. I shut the truck off and started it back up a few times to be sure, and the oil pressure sending unit started working. But THEN my 4X4 engaged. The dial on the dash was in the 2WD position, but the 4X4 was definitely engaged. It wouldn't engage when I first bought the truck without swapping the vacuum hoses under the hood, and now it's doing it on its' own.
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Own a 1997 F-150, 4.6 L, 4 x 4. I know it's old but it's in very good body shape, has been undercoated for years. I've only had it for a year. This summer it began to not start (intermittently). The dash lights all come on but the starter will not engage. Brought to my local garage, he changed the starter and the ground cable from the battery.
Was ok for a few months and now it's beginning to do the same thing. Brought it back to him, can't find anything. He did say that the battery is a bit weak, the terminals are spotless (I keep them spotless, coat them with white grease). I measured the voltage with the engine stopped and with it running. Stopped, the voltage is 11.94, running it is 14.87. This clearly shows that the battery is weak.
My question is would this cause the starter to not engage after 4 or 5 turns of the key and then on the 6th try, the starter turns over? I don't want to spend more money ($ 450) the last time and have the same result. If it's possible it's the battery, I'll replace it no problem.
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I have a 2003 Ford F150 XLT 5.4 V8 with about 131,000 on it. The 4wd does not work at all. You move the electronic switch no light in the dash no click at the actuator motor no nothing. I took the switch on the dash off and from the dark blue wire I am getting 11.5 volts from there constant.
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The brake pedal intermittently goes to the floor on my nephew's 2003 F150 without grabbing at all. Pumping the brakes restores them, then they act normally for a while. I've replaced the master cylinder with a new Motorcraft unit, no change. No ABS codes. All rubber lines are in good shape. I'm stumped, although I suspect the ABS system somehow. I'm going to have him pull the ABS fuse and see if the problem goes away.
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My dads f150 shuts off intermittently while driving it. He has to pull over and wait about 5 minutes until it restarts again. We have tried replacing the fuel filter, still shuts off! Some one pointed out the coil!? I am thinking that it might be the switch. It might be bad, shorting out and shutting down the truck?
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My 03 with a 5.4 has been hesitating a when you accelerate and cutting out as well as idling rough and die when you slow down. It does all this intermittently. Not every stop or every time you accelerate. I first got a code for the MAF and both banks running rich (PO102, PO172, PO175) so I cleaned the throttle body and MAF. The running rich code came back (PO172, PO175) so I then changed the MAF and air filter . It seemed to work for a day or so then my light came on and I figured the same code was back but to my surprise it was now both banks running lean(PO171, PO174) so I took my MAF back and got another one. It hasn't set a code yet but it is still running poorly. I have changed all the COP's and plugs as well ....
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So on a cold start I keep hearing this ticking noise. Not every time, but more often than not.
I have two thoughts:
1) Low oil pressure causing timing chain tensioners to allow slack in the timing chain. Oil pressure builds up after about 1 minute of driving.
2) Oil Restricter in the valve cover starving one side of the valve cover?
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I have a 2001 F150 XL, 2WD, 4.2L, Auto at work. It will intermittently crank but not start, also, my scan tool will sometimes not connect to the truck. The only code I ever get is 1 about not being able to connect to self diagnostics. I have narrowed it down to the PCM relay in the underhood power distribution module not turning on because it SOMETIMES only sees a 2 volt turn on signal instead of 12 volts. I have replaced the ignition switch on the steering column- initially I thought that took care of it.
But as I was about to put the meter away it did it again. If I remove and reinstall the diode that is in the PDM, sometimes more than once, I can get it to turn on. Are these diodes available from any one besides Ford? The wiring diagram in my Haynes manual is very generic and does not show the circuit from the ignition switch to the fuse box. Where can I find a GOOD and complete wiring diagram for free on the net so I can print it out and take it with me to work?
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My '99 F150 has an issue. The green digital display had one portion of a station number and one indicator section on the volume display that will intermittently cut out and reappear for no apparent reason. What is happening?
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I have a 2001 ford f150 4.2 five speed with a little over 250,000 miles. The wipers will not do anything. I have gotten a new motor and plugged it in before I installed it and checked it and still nothing. I have changed the switch on the column and they still did not work. I have tried checking with a multimeter and a probe light. I do not know what is wrong with them or where else to go. What to do or what to check next?
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My 2000 f150's 4x4 won't work, it has esotf, I have replaced everything I can think of, when I turn it to 4hi and 4 low i get nothing, no clicks no dash lights. I have replaced the gem, the switch, the relays, checked the fuses, i bench tested the motor it works, if i put 12v to the shift motor while on the t/c it engages to 4x4 (though I haven't driven it like that because I am not sure if its in 4hi 4 lo or in between the two) so that being said...
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I am having a problem with my 1998 F150 4x4. The 4WD is not engaging. It is a manual shift. I have checked the transfer case by turning the drive shaft in 2WD it is free. When I shift into 4WD it is does not spin freely. So I believe that is OK. I have checked the vaccum diaphram. It will move the piston when I attach a hose and pull vacuum on the inboard hose barb. So I believe the diaphram it self is OK. I am not sure if the hoses and selenoids are OK. They look fine. However there is a constant vacuum on the inboard hose line (red/pink color) wether I am in 4WD or not. Is this OK? How can I check the selenoids. If all this is OK, the next thing I believ it could be is the shift fork in the differential. Is that a difficult job? Do you need to pull the whole axle out to replace it?
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Just bough a '98 F150, 4.6L; drove it home and it ran great, lots of impressive power etc... Parked it my shop and getting it ready for safety check so I can register it. All I did was change the oil, oil filter and air filter.
Couple weeks have gone by, I went to start it and it does start & idles beautiful but it will not rev. I give it gas and it's like it's choking / wants to die. The signal lights are flashing super fast which I don't recall doing before. Battery wasn't holding charge so I installed a new one tonight; no difference. Alternator is good.
I have not checked the plugs yet because I don't think that would be the cause of an overnight change from running excellent to what it is now but I will check them.
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I have a 98 f150 4wd with manual shift on floor (msof) and the 4wd will not engage. I've done research and I've learned quite a bit but still have an issue. In All the research I've done I have learned about
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I have a 98 f-150 4x4 the abs light is on and I can't link with scanner or seem to find anything wrong I don't have front abs just rear. I hate lights and I've checked everything I can think of.
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