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91 Explorer need AC parts Pages: 12Last

runderwo on Mon March 29, 2010 12:44 PM User is offline

Year: 1991
Make: Ford
Model: Explorer
Engine Size: 4.0

Where can I find the FS10 replacement compressor with improved sump design?

How do I tell whether my EX has factory air or dealer installed air to know which compressor to order?

Is there a difference in quality between different condenser/accumulator brands and a recommended one?

Chick on Mon March 29, 2010 3:46 PM User is offlineView users profile

Here is a link to Quality replacement parts for the 91 Explorer.. You can look at tyhe pics of the compressor and you should be able to tell if you have a factory FX15 (FS 10 replacement is used on these)or the Sanden used in dealer installed.. Hope this helps..
be sure to read the FAQ page on flushing, black death, vacuum charge procedures..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

TRB on Mon March 29, 2010 6:19 PM User is offlineView users profile

We have the Sanden FS10 replacement for this but it's not listed on our site.

Item # 20-10991-AM

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Chick on Mon March 29, 2010 7:45 PM User is offlineView users profile

E-mail the guys at ackits.com andf ask about the Sanden replacement compressor, probably much better than Ford's FS10... and a better compressor for the money..


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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

runderwo on Tue March 30, 2010 9:46 AM User is offline

Thanks, it does have a FS10 in it right now, marked "use with r-12 or R-134A" and also a dryer without the blanket marked "XH-7". I guess someone did some replacing a while back.

I figured it was the shaft seal leaking but I just noticed the compressor discharge hose has a bulge and wet spot. Why are some hose sets marked "before 4/91" and others "post 4/91"? Does this relate to the compressor, i.e. since this FS10 appears to be "post 4/91" since it's marked for R-134a?

HVargas on Tue March 30, 2010 11:23 AM User is offlineView users profile

The before/post 4/91 is just in reference to the build date. We have listings for 2 different accumulators and depending on the build date depends on which one it is. The FS10 compressor is widely used from 94-08 in the 4.0L engine.

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Contact: Arizona Mobile Air

JACK ADAMS on Tue March 30, 2010 12:21 PM User is offline

We also do hose rebuild if you wish to send them in to us.

runderwo on Tue March 30, 2010 1:53 PM User is offline

So that's where I'm confused. The FS10 compressor nor the accumulator marked XH-7 clearly didn't come with a 91 model year, implying that I should use the parts marked "From 4/91", but if my truck was built before 4/91, which hose assembly would I use?

Jack, how much would it cost to rebuild the hoses? It is the type with the rusty 'muffler' on the suction line.

Edited: Tue March 30, 2010 at 1:54 PM by runderwo

HVargas on Tue March 30, 2010 2:32 PM User is offlineView users profile

You would use the hose assembly from the production date. Or just look at the pictures we have online and match them up. Pre-4/91 From-4/91

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

runderwo on Tue March 30, 2010 4:09 PM User is offline

Okay, I get it. It must be a difference in routing in the engine bay. I just need to figure out the date from my VIN number then I'll come back. Thanks.

Chick on Tue March 30, 2010 4:39 PM User is offlineView users profile

Look on the driver door, should be the build date on a tag there...hope this helps..


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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

runderwo on Tue March 30, 2010 5:56 PM User is offline

I don't have the driver's door anymore. It was wrecked. That's the problem

I called the dealer and after being bounced around, not called back, etc finally found someone who could look it up. It's 1/91 as I suspected. Also I found out that the difference between the hoses is the routing. The earlier ones are routed behind the intake and the later ones are routed in front of the intake.

I'd love to have this hose rebuilt instead of buying a new one if it's economical and reliable to do that.

HVargas on Tue March 30, 2010 6:13 PM User is offlineView users profile

The new hose runs about $75 plus shipping. Figure a solid $14.00. To fix the hose you would be looking at freight here, freight back and $40-$45 to fix the hose. So would be looking almost the same amount of money either way. It is up to you what you would like to do.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

runderwo on Tue March 30, 2010 7:04 PM User is offline

Do I need a red or blue o-tube (I'm guessing I need to look at the one that's in mine?)

How can I tell for sure if I have a high pressure cutoff switch installed or not (i.e., where would I find it)?

runderwo on Wed March 31, 2010 2:13 PM User is offline

Does the clutch cycle switch sold by ackits.com have both a low and high pressure cutoff?

HVargas on Wed March 31, 2010 2:29 PM User is offlineView users profile

Yes the easier way to tell is to take out the old one. I show your vehicle calls for a Red orifice tube. A high pressure cutoff and cycling switch are two different switches. The cycling switch will be on the accumulator. Your vehicle does not have a high pressure cutout switch. If you want to keep your current cycling switch and go with R134a you can adjust it to the proper pressure. Or we have a switch available for the R134a. 29-33102

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

runderwo on Wed March 31, 2010 2:51 PM User is offline

http://acsource.net/acforum/viewtopic.php?f=1&t=848

Here they talk about adding a high pressure switch to the 91-93 models. How would that be done? Sorry if this is considered a 'competitor' link but I don't have any other references.

Edit: I found a mention in this forums too:

http://www.autoacforum.com/textthread.cfm?catid=2&threadid=14211&FTVAR_MSGDBTABLE= (in the last post)

Edited: Wed March 31, 2010 at 3:17 PM by runderwo

HVargas on Wed March 31, 2010 4:38 PM User is offlineView users profile

If you choose to go with R134a you would need to add a high pressure switch correct. You would need to put it on the high side either in between the compressor and condenser or condenser and accumulator. Here is the switch. 29-30703-3 And here is the fitting that needs to be crimped into the line as well for the switch to thread into. SP161FS

As far as the condenser is concerned, the 95-97 Explorer, which comes with R134a has almost the exact same size condenser and uses a 6mm construction just like the 91-94 does. If you wanted to, you could even probably swap them out and make the 95-97 fit since it is less than 2" taller and 1" wider and has the same style connections as the 91-94.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air


Edited: Wed March 31, 2010 at 4:41 PM by HVargas

runderwo on Wed March 31, 2010 4:42 PM User is offline

Do I need to have an A/C shop crimp the fitting in or is this something I can do myself?

HVargas on Wed March 31, 2010 4:54 PM User is offlineView users profile

You will need somewhere that can rebuild hoses to do it. Or if you send your hose to us to get rebuilt, you can send the other and we can crimp it in.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

runderwo on Wed March 31, 2010 7:51 PM User is offline

Can I send you the hose and then you crimp in the fitting and just add on other stuff I need when you're done?

HVargas on Thu April 01, 2010 11:29 AM User is offlineView users profile

Yes.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

runderwo on Thu April 01, 2010 12:04 PM User is offline

Can you give me the address to send it, and should I include a note to the effect to refer to this forum post?

HVargas on Thu April 01, 2010 1:12 PM User is offlineView users profile

Arizona Mobile Air Inc.
3601 W Clarendon Ave
Phoenix, AZ 85019

Just write a little note about you talked to us on the forum about a 1991 Ford Explorer and leave your phone number and we will stay in contact with you.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

runderwo on Thu April 01, 2010 8:57 PM User is offline

Okay, I pulled out the hoses. The high side definitely has a big leak in it. There does not appear to be any "black death" that is obvious.

2 other things to note.

1. At the high side fitting with the condenser, someone couldn't get the hose to seal over the old (black) O-rings. So they used orange RTV. LOL!

2. I cannot for the life of me get the low side nut from the evaporator to the accumulator loose so that I can check the orifice tube (which is out of reach underneath it). I am using a 1 1/16 and a 7/8 wrench which were the correct sizes, but I am starting to round off the fittings. Is it a left-hand thread or something weird? As far as I can tell, the evap nut screws onto the fixed acc. fitting, so, to loosen it, I am turning clockwise since it screws towards me. If I am totally sure that I am doing it right right I can just try to muscle it off of there. I soaked the nut with PB blaster for now.

Edited: Thu April 01, 2010 at 8:58 PM by runderwo

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