Ford 7.3L Power Stroke (1999-2003) :: A/C Slowly Starts Blowing Warmer Air When Sitting In Stopped Traffic


Jul 3, 2017

Sitting in stopped traffic for about 45 minutes and AC slowly starts blowing warmer air. Temp about 95 and very humid. Felt like AC just freezing up, but no frost on anything when I looked under hood. Hoping freon problem. About to start looking at it this morning.

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Ford 7.3L Power Stroke (1999-2003) :: Radiator Cap Slowly Blowing Off Pressure?

I had to replace injector cups due to diesel in the coolant. Then I had to replace the degas bottle because it was swollen and looked like the michelen man. Then I had to replace the radiator cap (again) because I suspect that the diesel in the coolant had dissolved the seal in the radiator cap and it wouldn't hold pressure. Now I've got a bunch of new parts in there.

I parked yesterday, popped the hood -- and heard the radiator cap slowly blowing off pressure. It was the type of sound that you hear when a tire has a slow leak. I tightened the cap and the sound didn't stop. I REALLLY tightened the cap to the point where I felt as if any more tightening would cause the threads on the degas bottle to strip, and the noise lessened.

Unless I'm mistaken, a radiator cap is supposed to hold pressure to 16psi and then release all at one time, not slowly bleed off pressure with a hissing noise.

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Ford 7.3L Power Stroke (1999-2003) :: AC Stopped Blowing Cold

My 02 F350 7.3 new to me trucks ac stopped blowing cold. Not air gap issue (shims have been removed prior to my ownership-I pulled hub and checked), the charge is good (according to the shop I went to for evac and refill), and the compressor's cycling quickly. I'm no HVAC guy by any stretch. I have a cheapie gauge from days long ago that I connected to my low side port (which I know isn't definitive) and it reads from 25 to about 40/45 depending on the cycle.

Additional info that may not be anything:

1) Where the line goes from accumulator to evaporator the foam seal is slightly messed up and I feel ice cold air coming out of the housing.

2) The line is warm before the orifice and cold after it.

3) The lines going to the accumulator are both hot (after taking it to shop, before were lukewarm).

4) The condenser doesn't seem to have excessive plugging and I have rinsed it with garden hose sprayer with no difference.

5) The air from the vents blows good, just warm.

6) I've replaced the actuator for the blend door already.

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Ford 7.3L Power Stroke (1999-2003) :: Heater Fan Stopped Blowing

The heater fan stopped blowing the other day. The fuses check out ok. What would be the most likely culprit after that? relay? Switch? Blower motor?

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Ford Super Duty (1999-2016) :: 2001 V10 - Sudden Power Loss After Sitting In Long Traffic Jam

My excursion suddenly lost power after sitting in a long traffic jam. I have a scan gauge II set up and didn't see any signs of over heating however when I went to accelerate back up to highway speed my motor revved up to 3000 rpm and just lost power I ended creeping on the side of the road at about 15 mph and barely maintaining that. The motor was not willing to revv up. I reached a spot to pull over and shut it down for about 15 minutes and started back up and drove off with no noticable issues. I have 211,000 miles on this motor and I am going to change my coil packs, I think they have been there since the truck was sold new....I changed four of them to address a miss and have six left, I will also be changing my fuel filter. We are about to pull our camper across country....about 1400 miles..

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Ford 7.3L Power Stroke (1999-2003) :: Tranny Slowly Go In Drive

Tranny rebuilt, truck in sig, and beefed up 2 1/2 years and 30K miles ago. Recently started going into D after 10 to 20 seconds after putting it in gear, cold or hot. Very frustrating, especially when trying to maneuver a trailer.

Transmission builder has been running his shop for 20+ years, all makes and models, not Ford specific. I choose him because he runs a local business, has a good reputation, and happens to live less then 1/4 mile from me.

I have searched the forums, and read where Mark says this is loose valve body bolts, or forward drum going out. Builder can't grasp where it would be drum seal if it doesn't do it all the time, which it doesn't. He said it sounds more like something electrical, but there are no codes stored on pcm.

Builder also said he would pull tranny to check drum. Does this sound like I'm moving in the right direction? Or can it be something else?

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Ford 7.3L Power Stroke (1999-2003) :: Truck Started Losing Power Then Slowly Die / Fuel Pump Bad?

I was driving my truck then all sudden truck started losing power then slowly died. I restarted it, it was a lil shacky then died again. Iunscrewed the fuel filter and looked in the housing and there was lil fuel in bowl i turned the key to on position and bowl did not fill with fuel looked as if it were shooting some bubbles up(air) could it be outta of fuel???

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Ford 7.3L Power Stroke (1999-2003) :: F350 Cut Off After Sitting For 6 Years?

I bought this truck from a family member 03 7.3, it's been a park not garaged sense 09 when my cousin the original owner died. Was strong running when park. I started it yesterday after changing solenoid, hot battery, and I put some fuel stabilizer and 5 gallons of diesel in it. But I cut it off maybe two minutes after because I didn't want to break anything before I found out what's a few tips of things to do before I put her onda road because this is my first go round buying a diesel truck

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Ford 7.3L Power Stroke (1999-2003) :: Long Start After Sitting For 8 Days?

After setting up about 8 days, my truck has long start now. It starts but takes longer.

I plan to start with charging the batteries over night and see what happens. How old they are since I bought it last year. The batteries did drag just a tad when it started but seem to be back up after driving.

New ICP few months back. I have a couple scan tools.... Forscan and Dash Command. What to look for?

Last note: it starts fine, just takes longer now. Is plan to start tonight.

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Ford 7.3L Power Stroke (1999-2003) :: Studder When Cold After Sitting For Long Period

I think I'm going to buy a late 99 CCLB six speed manual truck that's probably been sitting all of a year, maybe longer. Prior to being parked the truck ran flawless. 6 months after parking it he decided to sell it and when driving it, it has a miss when its cold and blows a little white smoke when accelerating. Appears to clear off and run normal after its warm. So he decided to investigate it and re-o-ringed the injectors and checked other things out.

He's determined he thinks it has a weak hpop. Not sure I'm sold on this. Fast forward six months and now I'm pretty sure I'm going to buy it. Drove it yesterday and same thing, first 4 or 5 miles kinda studders or misses but after that runs smooth and has no issue. No longer blows white smoke at all or anything. Obviously the fuel is old as hell, other than that what is everyone's thoughts?

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Ford 7.3L Power Stroke (1999-2003) :: No Start After Sitting For 2 Months During Rainy Period?

I recently parked my f-350 dually on a 15degree slope during a rainy period about 2 months ago. I went in recently to start it and it would'nt start. I replaced the two batteries in my attempt. I turn on the key in the on position, wait for the "Wait for Start" light to turn off, then it cranks really fast , then slows down and it won't start. Tried to take off the fuel filter but is there a special tool to take the cover off. It started real fine prior to this. Also I put in 5 gallons of diesel .

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Ford 7.3L Power Stroke (1999-2003) :: 2001 - While Sitting RPMs Drop Briefly?

the wife's '01 Excursion has developed a new idling quirk. While sitting, it will briefly drop rpm's. You can hear it, and see it on the tach gauge. No other noises or problems, except for the brief drop in rpm's.

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Ford 6.0L Power Stroke Diesel :: Long Crank Time And Starts After Sitting And Cold

The past couple of cold starts (not real cold mornings though) I have experienced long crank time to start. Once started she starts normally. No time to read but I'm getting a little worried that I'll get stuck somewhere. I'll check back with my phone when I get into an area with cel service.

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Ford 7.3L Power Stroke (1999-2003) :: Truck Will Hit About 22 Psi Then Drop Off Slowly When Pulling A Hill Hard

I just got my new up pipes put on as well as a 38R and pulling a hill hard my truck will hit about 22 psi then drop off slowly I have an electronic boost fooler wich has been on the truck since new pretty much but I don't get a CEL at all is this what I should be getting and I was on the 80hp tune? I ordered new boots and plenum inserts they just haven't got here yet. I know I had a leak before on my old up pipes because they rattled every now and then and I could see exhaust coming out of them when it was cold out but I could hit about the same 22 boost with my old setup. So pretty much nothing changed boost wise except it gets up to boost faster now. I would say it's defueling but I was always told the CEL would come on if that was the case.

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Ford 7.3L Power Stroke (1999-2003) :: Starting To Leak Just Sitting In The Driveway - Water Pump Replacement

So the water pump on my early 99 (158k miles) is starting to leak just sitting in the driveway, did a little research last night and read a few write ups. Just wondering if any tips or tricks I could use to make this go easier. Also any list of parts I should replace and/or might need. I read on one write up about replacing it with an Airtex water pump and was wondering about what people thought of those, I would rather fix it right then just go with the cheapest parts. Possibly there are better brand water pumps out there?

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Ford 6.0L Power Stroke Diesel :: When Sitting At Idle In Park And Truck Starts Knocking / Horrific Sound

So was sitting at an idle in park and truck starts knocking, horrific sound. So shut checked oil, good, went to work came out 8 hours later, started up still knocked. Pulled into drive hit the pedal, knock went away, stopped at red light, knock came back...... Truck has been parked for 3 days, still knocks at an idle but soon as tap the pedal and give fuel it goes away... Tried unplugging injectors one at a time to eliminate, still had knock.

2003 auto, 4wd, studded,deleted, coolant filter, sct with innovative tunes 108,000 miles.

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Ford 7.3L Power Stroke (1999-2003) :: 2002 - Transmission Work Slowly - Hesitates To Engage Drive After Reverse?

I have a 2002 7.3 e350 quigley 4x4 Sportsmobile with 312k miles. 2nd owner. Bought it with 295k miles 2 years ago. From what I gathered the tranny is original.

After reversing at a downhill angle, stopping, and shifting the lever to Drive, the tranny doesn't seem to put Drive in gear and depending on the angle of the slope, the van will roll back or barely creeps forward even with throttle. Put it in 1st gear, and the tranny engages that in gear and drives forward no issues, then I can shift to 2nd, then Drive and the tranny shifts fine after that.

No weird tranny noises or clunking. Noticed this issue about a month ago or about a couple thousand miles ago. Did tranny service (drain, filter, fill) at the ford dealership at 305k months ago.

I can only replicate this issue when Reversing on a down slope. On a flat surface van Reverses and engages Drive like normal.

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Ford 7.3L Power Stroke (1999-2003) :: 2000 - Battery Drain And Slow Crank If Sitting For Couple Of Days?

If I leave my truck sit for a couple of days, the batteries are noticeably weaker. It's fine overnight, but two nights and it's slow to crank. Three and it won't start without charging the batteries. I checked for a drain last night and found that it was drawing 1.2 amps.

That seems like a lot, no?

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Passat (B6) :: AC Slowly Starts Blowing Warm Air

If my car get really hot, it initially blows cold air (the way it should be) for 5-10 minutes, but then it slowly starts blowing warm air until I get the full heater going for about a minute, and then it goes back to cold air, sometimes after 45 minutes the cycle repeats. This does not happen every time, this year I had it happen about 5 times.

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Ford 7.3L Power Stroke (1999-2003) :: DLC Fuse 3 Keeps Blowing

I have a 2001 F-450 SD with 7.3. What the problems would for the blowing of fuse #3. The DLC fuse. I mean I know it goes to the cigarette lighter as well. but when not in use it still blows.

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Ford Super Duty (1999-2016) :: 2003 F250 Starting Rough Starts After Sitting For Few Days

I have a 2003, F250 SD, 5.0 with a weird problem no one can figure out. Now it doesn't matter what time of the year it is but after the truck sits a few days when I go to start it up it run roughs. Sometimes for a few seconds sometimes a few minutes then it "straightens" itself out. Recently it took almost a day to fix itself. No engine codes, no other symptoms.

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