Ford A/C :: 1988 E150 - Clutch Cycling Pressure Switch?
May 27, 2005
How would I test (if Possible) the A/C Clutch Cycling Pressure Switch on my 88 E-150 4.9L? I had to replace the evaporator, it was leaking along a seam. I have a feeling the Cycling Switch is bad too.
I was hoping for a simple test w/o Gauges. The Switch is in a real tough spot to remove it. I also heard they could be adjusted. There are no leaks in the system and no blockages, that we detected when we evacuated and recharged the system.
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I just finished replacing the entire AC system on my 88 E150 ... All was well at first but shortly after finishing the r12 charge, the clutch began to click very loudly when engaging or disengaging. You can clearly hear it inside the cab. The air gap was set to .028 which is within spec according to the manual. I checked the air gap today and it was about .030
Am thinking,, could the snap ring have come loose that holds the pulley on allowing the pulley to be pulled forward when it engages? Once engaged the tension from the belt pulls the pulley back in in alignment? It sounds like two pieces of metal smacking together, even when it disengages. Kinda of like if you had the pulley in one hand and the clutch in the other and smack them together.
I did have a little trouble getting the snap ring to seat in the groove on the bottom side of the snap ring. I know it locked in the groove very good where the gap in the ring is and on both sides. The thicker bottom of the ring, I was not absolutely positive it was in all the way. i lightly tried tapping on it and it wouldn't go in any farther. There was no visible gap, I just couldn't tell if that thicker part was in all the way.
I used the proper removal and install tool when setting the air gap. The install tool threaded onto the compressor shaft and pressed the clutch plate on as you tightened the outer nut, so I didn't use a hammer...
I have two different new clutch plates. I used the one on the right as the one on the left fit a little tight on the shaft. The compressor is a FS6 xbolt and all the parts are motorcraft. What to check?
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I have an 88 ranger 2.9 manual trans. The clutch safety switch wires melted (red with light blue) 2 come off the ignition, I traced the one to the clutch switch and replaced. My problem is my book says the other goes to " electronic shift control module", I can't find this module and I can't seem to chase wire as it gets lost in wire loom.
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1988 Ford E-Series Van ford van starting problems I have a 1988 ford van e150 302 that wont start. when it did start, it ran rough, then progress to needing start fluid to start. Now it cranks but wont start at all. it sat for almost a year with additves in gas but it does smell now unlike normal gas. it has sta-bil and gas line anti freeze as additives. A rail mount high pressure pump was put on two years ago. Could the hi-pres pump been installed backwards? Now it will not start even with starting fluid, just cranks and tries(pops and backfires a little sometimes). I towed in to a mechanic to get diagnosed.
In regards to the 1988 ford van start problems, the mechanics said that fuel is bad and needs drained, that in tank pumps seem to have pressure(low pressure pumps). the rail (high press pump) they say tests 15-20 psi only. the want to drain tanks, replace pump and "go from there". They also said a multitude of problems can happen from "bad gas" ranging from injectors needs cleaning to bent push rods, lifters and crank shaft can be damaged. All may need cleaned, fixed or replacing. does this seem a little fishy ? Could it need the timing set? Or injectors bad?
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Have an E150 van with 302 engine. Where is the low pressure charging port on this beast.? The high press. is immediately visible but can not find low....
The van still has the old r-12 and I have 2 cans left...want to charge the system one more time before we get our new 6.0L VAN late this winter!
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I need to replace the fan clutch on my 1993 Ford E150 Club Wagon 4.9L Chateau. The original part, YB466 has been replaced. The new ones are all too long and the fan will hit the radiator. The original is 2-3/8" long front to back, including the nut. The replacement ones available are 2-5/8" or longer. I have talked to our local machinist, and he says the new parts cannot be made shorter. The water pump shaft is not long enough to allow shortening. He says look for a shorter water pump.
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I have a 2002 F250 on which the AC compressor clutch is not cycling: I have checked and added coolant so low pressure is correct (don't have high pressure gauge). I checked the clutch air gap and it is at 0.030 " as specified in another post. I replaced the low pressure AC cycling switch (on the evaporator/dryer). With the AC on, I disconnected the AC cutoff switch and the clutch disengages. This circuit has the correct (>10V) going to it. I am thinking it could have something to do with the AC relay.
When you switch the ATC to a setting other than AC or Max AC, the clutch disengages fine. I noticed this problem because the AC shuts off when it is really hot, after I have been driving for a long while, about 1 hour or more. If you shut off AC, wait a few minutes, then turn on it works fine.
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He has a 96 explorer and his ac compressor clutch was cycling on and off. So he went and bought 2 20 ounce cans of 134a and proceeded to add it to the evaporator service port. Of course a lot of it sprayed out side of it as it did not fit well (duh). So he has no Idea how much he actually got in there out of the 30 or so ounces he dispensed. He is laughing at himself with me on this. He says hi ahead of time
I have access to good gauges and a reclaimer and vacuum as I work sometimes for a residential ac guru. So what to do? I was thinking the evaporator should be changed out but I want a second opinion. Then vacuum and add new 134.
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I Just replaced the ac condenser filled it with new freon and now the clutch cycles on and off every few seconds but doesn't blow cold air. Does it need to settle for a while or run on high max AC for a while before it works properly? I filled it to the proper level. I'm pretty confident its full. Do I need to adjust anything? It hasn't worked in a few years I bet. I just got the truck. 2001 Ford F-350 7.3 diesel ....
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At the first of summer I had typical A/C Clutch cycling not much cold air. Checked the Low Press side said it was low PSI took a Gamble that the pump was good and just filled it worked great. Lost All A/C the other day checked it out thought it may have small leak somewhere but clutch didn't cycle hardly at all Had a gut feeling it wasn't simple leak.
Well I just found a Hole in the condenser at the bottom Tube that runs across. So looking for new condenser. I also don't know what to do with recharging it and the ac oil in the system how much? maybe its safe to say most the oil was pumped out. Would standard procedure be to repair it then FLush cooling system to get to a baseline and then refill prescribed amount of oil and Freon
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Today, my 1995 E150 suddenly started acting like it was running out of fuel Lucky for me, this happened close to both a parts store and my usual mechanic's shop. Unluckily for me, it happened on Saturday, and my shop can't get to it until Thursday. So here I am, hoping to do a fix in the meantime.
At first, it seemed that it must have been the fuel pump, because I couldn't hear it come on when I turned on the ignition. Then, a guy who said he was a mechanic told me he could hear the pump cycling, and that my problem was the fuel pressure regulator. So he managed to start the vehicle after a few tries, then it crapped out again. He did this twice. Then he went away.
I called every parts store in town, and none of them had a fuel pressure regulator for my vehicle, and the earliest any of them could get one was Monday. But I knew I was due for a fuel filter, and I'd changed filters on this vehicle before, so I got one of those and put it in. To my delight, the van started right up and idled beautifully. In fact, it ran beautifully for about 15 minutes, until I came to a slight rise, then it crapped out again. It still started up and idled smoothly, and even revved up smoothly, until it reached a high idle speed, at which point it crapped out. I did manage to limp into the parking lot of my shop - which, again, can't get to it until Thursday.
So my question is: does this sound like a fuel pressure regulator to you? If so, is that a job which somebody with a reasonable mechanical aptitude (i.e., at least good enough to change the fuel filter) should be able to feel safe doing? If the answer to those two is "yes" (or even if it's "no")....
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I am on my 3rd engine in this car (known issues unfortunately) and for the past few weeks have had problems with the engine feeling like it is quickly cycling through normal and 'losing pressure' at MPH over 40 when gas is going into the system. Mechanic replaced oil pressure sensor but problem recurred on next drive and AC cooling went out at the same time.
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My Grandpa has an 88 Ranger 2wd with the 2.9l V6 and a 5 speed, I believe, M5od. I was driving down the highway when I heard a noise. I tried throwing the tranny in neutral but when I pressed the clutch pedal in, I had no pedal whatsoever. Engine took awhile to restart. It'd turn over a little almost as if a rod was bent or something of the sorts. Eventually the engine started and would stay running as long as the clutch was pressed in (disengaged).
The engine dies no matter what range the transmission is in,neutral included unless the clutch pedal is depressed. It Will die when the clutch is released in any gear with no forward movement that is noticeable. I can spin the tail shaft with the driveshaft installed and all gears in neutral but the input does not spin at all. Input shaft wont spin at all, period. I originally thought the slave cylinder was KIA but now I am very confused on what the problem could be? Is there a bearing the input shaft rides on that may of seized?
I pulled the tranny last night and took the top cover off. Yes, I made sure it was in neutral when I removed the cover. I can manually shift the collar to all gears by hand, 5th and reverse included. I'm stuck between a rock and a hard place here and where to go from here. I have bought a new clutch assembly and slave cylinder. This truck was bought by my Grandpa brand new in 1988. It has 98,000 miles and everything is original. I did forget to mention that there was very little oil in the trans when I drained it and it appeared to be gear oil vs ATF.
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I have a 88 ranger supercab 2.9l 4x4 with the fm146 trans and recently I have had a problem with my clutch master cylinder rod falling off my clutch pedal. I bought the new bushing and put it on and it was fine until yesterday. It wants to keep coming off. Is there a clip of some sort to hold it on or no. I looked at a few at the salvage yard and they did not have a clip just the bushing. So what do I do?
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I've got an oddball '88 SWB with the M5OD transmission. Since I've had it (about a year now), its always required a lot of gas to get it rolling without it stalling after sitting overnight or during the day at work, especially putting it in reverse for the first time. The shifts have always been a little choppy/jerky/grabby/whatever you want to call it, too. Mostly going into first from a stop, but you can feel it other gears too, especially if you're not flooring it.
Anyway, it seems to have gotten worse and I'm getting to the point where I'm looking at a cause. One thought I had was oil contamination on the clutch discs, I know this will make a clutch feel "grabby". There is some sludge accumulation between the trans and engine, and it appears I may have a very slow leak there.
I have to change the trans fluid this weekend and am wondering if there's anything I should inspect while I'm at it -- I don't know a whole lot about the clutch system on this van and there's next to no information on it. Frankly, I don't even know if its hydraulic or cable.
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My 88 VW Cabriolet convertible has been having car problems since I got it, 1st the Clutch went out. Then we had the hoses in the engine fixed and a new Alternator. After that 5th and 3rd gear would pop out of it's gear, and that was fine because I could hold it in gear, but now the car can't move, you can turn on the car but you can't get it to move in any direction, the gears make sounds, as if they are moving but the car doesn't move.
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So I have an 88 k1500 with the 350 that the previous owner removed and rebuilt... Didn't hook a lot of stuff back up etc... It's like a puzzle. It runs good for the most part but the oil pressure gauge in the cab pegs out when it's running. I've heard 1989 and older 350 engines have 2 oil pressure switches/sending units. I know about the one up by the distributor. But can't seem to locate the other one. Also what does the one by the distributor control? And what does the other one control?
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On my 2001 Excursion the ac clutch went south over the weekend. I replaced the clutch with a factory clutch kit. Now the problems are baffling me.
I set the air gap at .020. The problem being when I turn the ignition switch on and turn on the ac switch the clutch does not engage. I still get cold air. When I start the truck and it runs the clutch is engaged without any problems, I turn it off and the clutch disengages.
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Working on a 88 Ranger 2.9L 5-speed ext cab. The fuel pressure drops off fairly fast when turned off and I'm pretty sure that the check valve is bad. My question is, which pump has the check valve? It is a single mid tank set-up and has a pump in the tank and on the frame.
Pressure is fine while running. about 30psi @ idle and 40psi with no vacuum on the regulator. The pressure drops off within a couple of minutes which causes it to have to crank over for a bit to rebuild pressure and start.
It looks like the frame pump is readily available while the in take pump is special order. I just need to know which one has a check valve. I'm thinking the in tank pump, but I hate to waste money for the wrong pump.
Pressure drop rate
30 psi @ shut off
25 psi @ 1:05 min
20PSI @ 2:30 min
15psi @ 4:45 min
still dropping
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I have a 1988 Ford F-250 Lariat, 7.5L 460, four-wheel drive. I have two fuel tanks on it, and I've been having a really annoying, obnoxious problem with it lately. After running it for a while, I noticed that I keep losing fuel pressure, and the truck stalls. When I try to start it, it does nothing but roll over. It just won't start. I've changed the fuel filter, I know both fuel pumps are working (I turn over the key, I can hear front, back, and high pressure pump attached to the left side frame rail kick in.) It's Fuel Injected, not EFI, hence that third pump. The problem happens a lot, and it's random. I could drive for 100 miles, stop to get something to eat, come out, and it won't start.
I thought maybe it was the fuel pressure regulator, but I don't think that's the case because it still runs. I would assume that if the regulator was bad, it wouldn't run at all. I also thought that maybe it was the relay, but according to some mechanics I spoke too, if I can hear the pumps kick in when I turn the key over, then the relay is fine. The only thing I could think of is that it might be the fuel selector switch. Maybe it's going bad, shorting out or something. When I flip the switch though, it switches between fuel tanks, and the gauge reads how much fuel is in it from the sending unit.
There's a schrader-type valve up by the fuel injectors. When I push it in, it barely squirts any fuel out, if at all, so I know the pressure is low. When I push it in on a good day, it sprays out like a water fountain. Just tried starting it again - no good. Pushed on the valve, it spurted out some fuel pretty well, but still won't start. Occasionally tries to, but ultimately won't. I know the spark is good, checked the plugs/distributor cap. Can't get the sucker to start.
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How do I jump the low pressure freon switch on a 2003 ford escape? I'm putting freon in my 2003 escape, but the compressor won't keep running, so what do I do to keep the compressor running?
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