Ford Aerostar :: 1995 4.0 No Longer Likes To Shift Out Of First Gear / Vacuum Modulator Oddity
Mar 20, 2011
My '95 Aerostar 4.0 no longer likes to shift out of first gear. It will if I accelerate to maybe 25mph and completely get off the throttle for a few seconds. (It also revs freely at full-throttle kick down, as though it was in neutral.) A fluid and filter change didn't work, so I dug into forum posts. I found the vacuum modulator, and there's no ATF in the vacuum line, but it's an adjustable one which has me baffled...
The modulator has a thumb wheel on the outside of it. It will unscrew completely - and then it comes off, with a pin attached to it. This is very different from the ones I've seen pictures of here, where the pin is moved by the diaphragm. Is this the same pin, or some kind of preload device for the actual pin farther inside?
There's enough else wrong with the Aerostar that I'm not willing to sink very much more money into it. It'll run as is, as long as I'm careful. I'm just trying to get a few more miles out of it... might a regular, non-adjustable modulator?
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95 3.0 aerostar. There was plenty of ATF in the vacuum line, hopefully this modulator replacement will fix the loss of ATF and will stop the oil from over filling, I had like 3 quarts above the dipstick line, I am assuming this was ATF going into the crankcase because of the bad modulator...
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This van has the A4LD transmission. I know nothing about transmissions, so, when it wouldn't shift from 1st to 2nd, or, 2nd to third, I researched it on here and found a lot of bad reviews. I also found out that it was likely the modulator gone bad, and how to replace it. I replaced it, and although the new one was restricted and the old one wasn't, shifting was back to normal. So, I was thinking, that was easy enough, pretty good for the original tranny which has 297,623 miles on it, and hasn't been serviced since the first 1k!
Well, that lasted about 75 miles. Now it won't go forward or backward. Everything is still in place, no leaks, fluid level is full. I didn't change the fluid or do anything other than change the modulator. (My friend can't afford to service it properly. Now it may need replacing!) I have only seen problems shifting between gears and OD, TC lockup, etc., but, nothing about not moving at all. What might be the problem? Is the tranny history?
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I just picked up Aerostar #6 and am in the process of transferring parts etc. Got this one cheap as it was badly abused and has issues. Big problem, the shifter takes a lot of wiggling etc to get out of park. Is the interlock easy to disable? If so how? Or would a good column from my 93 be an easy plug and play proposition?
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I have a 95 Aerostar that when in park it is hard to shift into reverse, drive etc. It is an automatic, 3.0 liter.
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My 95 ford Aerostar 3.0 automatic trans wont shift into overdrive, here's what happened. a small hose on the side of the transmission came off, this must have popped off when I was stepping on the gas with the brake on in drive and reverse. It took 2 months to find the hose off, during those 2 months I had to shift the van manually, you had to get high RPMS before it would shift.
About 2 weeks before I found the problem I notice the van would not kick into overdrive. When I finally found the issue and reconnected the hose the trans shifted fine but still would not kick into overdrive though. Is there another vacuum hose that goes to the main vacuum housing? or an adjustment on the linkage area? This has been like this for about 6 months now and I can go on a highway..
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I'm not real sure what just happened this morning but my '95 Areostar stopped moving. While in gear there is a loud noise from trans area and the axles are no longer connected to the transmission. I think the trouble is in the electronic AWD portion. I thought at first the driveshaft fell off it was that loud. Where do I start tearing into it?
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It's a 1988 with a 3.0 engine and an automatic transmission. It doesn't want to shift. I can make it shift manually, but if I leave it in OD, it wants to stay in 1st gear . If you fiddle with the accelerator, you can get it to shift. Then it wants to stay in 2nd, and so on.
Like I said, if I use the gear selector to manually shift, it will go to all four gears just fine.
My thoughts are a vacuum leak (a big one) or a faulty vacuum modulator at the transmission. No, the vacuum line to it doesn't have tranny fluid in it, but I replaced it, and I wonder if it's bad. Yes, I made sure to put the little metal pin/link back in it.
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Recently my 93 Ranger 4.0 has started to take longer to shift into 2nd gear and the rpms are way up there. shortened 2nd gear then 3rd will be fine and so on. This only happens after the engine goes completely cold. I took it to a transmission shop and they said tranny is fine...Other than this issue the truck is fine.
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I have a 1991 Aerostar 2wd 3.0. I recently had freeze plugs replaced and the mechanic had to drop the tranny to get to some. Now the shift cable has come off the gear selector lever. I have googled everywhere and can't locate the procedure for reattaching it. My mechanic was doing the work on the side and charged me only labor for his assistant. He is at work right now..
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I have a 1995 Ford Crown Victoria. If I start the car in Park, it will not shift. IF I start the car in neutral, I can shift gears with no problems. In conjunction, the turn signals work well, but I have no brake lights.
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My transmission up shifts fine for the first couple of gears, but as I get to the last gear (I think it is the last gear), my transmission takes a while to up-shift. I am at 3000 RPM before it up-shifts then goes down to 2000 RPM on the next gear. Is there any fix that will not require a new tranny?
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1991 aerostar 4.0 ... My van was running well til last week.it allegedly has 77000 miles on it. It started running really rough within a 50 mile period. I've quit driving it til I am sure. I am not harming it. I put a vacuum gauge on it. It wildly fluctuates between 3 and 7 pounds at idle. I've tried plugging the four vacuum lines one at a time to eliminate the accessories as the problem.the check engine light is off and my scan tool shows no codes.i unhooked the exhaust at the manifolds to make sure the cats aren't clogged.it doesn't have egr. There's no water in the oil or bubbles in the radiator.i have a compression tester but id like to avoid trying to get to the plugs unless necessary.
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My 2005 Freestar (not the Freestyle) a/c is working properly except that it is only blowing through the defrost. I've read other posts about it being a leaking vacuum system on other ford vehicles that cause this problem.
1) I'd like to confirm that this Freestar a/c works on a vacuum system to open the a/c duct doors.
2) If it is, where are the vacuum hoses located? I'd like to check them to see if they are connected or if they have a hole.
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Is there an easy way to do this...???
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Searched several times over the winter. Finally tore each hose out one at a time and went carefully over it before returning or replacing.
Turned out to be the long formed semi flexible vac. hose that runs from the gas fumes purge tank control valve group to the throttle body across the top of the engine. Ripped it out, on one of the bends was a small crack all the way thru, apparently would open up wide when stressed and cause problems. Mainly on hill pulls or hard acceleration but not every time. NO hair left after this one.
Replaced, deleted the codes. Runs like a top.
Still amazed at how much power these 4.0L V6 OHV Fords have from low speed on an uphill on ramp drag race.
stirs the old hot rodder blood.
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can you replace the upper control arm bushings (pass side) with the arm still in the truck?
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I have a '95 Aerostar where the two lights are always on. I'd like to pull the codes if i can. Does this year has the RABS or the RABS II module. Or is the diagnostic connector the same?
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I was wondering how do i replace the outer tie rod on a 95 ford aerostar awd 4.0L. I have enough for the parts but not extra tools. Need a tutorial on how to do it?
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When I hit the brakes hard like seating the brakes the Aero would stall....
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My mom's 95 shifter is slowly getting worse. Right now it's at the point where we have to hunt for gears just to put it into park or reverse or d/od. It's not stiff like the rest of ours, hers is all sloppy and loose. She says it's been doing this for a while, but i think it got worse when i pulled her cluster out to change the light bulbs. I say this because i couldn't get the needle cable un done, so i just let the cluster rest on it while i was changing the bulbs, which put a little bit of tension on it.
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