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A couple different codes..B0100 and P0128
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Hammer Time
Ultimate Carjunky
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Aug 12, 2013, 12:06 PM
Post #26 of 41
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Re: A couple different codes..B0100 and P0128
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No, thermostats don't adjust. You may have burped some air out though.
The IAT and CTS are both temp sensors. One is intake air and one is coolant. If the truck has been sitting all night, they should both read the same temp.
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MarineGrunt
Enthusiast
Aug 12, 2013, 1:03 PM
Post #27 of 41
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Re: A couple different codes..B0100 and P0128
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Thanks HT.
Hopefully it did just have some air in the system. I guess time will tell. If that's what it was I wonder if I had the same issue with the Envoy thermostat and the fix had nothing to do with the OEM thermostat I installed. Oh well, as of now everything is good to go on both. The only other fix I need to work on before winter is the Envoy won't go into 4 high. The automatic awd works though. The wife drives some north to south country roads in the winter and they can get pretty hairy with snow and wind so would like to get it fixed before November. I'm thinking it's the encoder motor but haven't even looked at or tested anything. That's for another thread though.
Thanks for all your help on the two codes. I'd say the issues pertaining to them are solved for now. Now it's time to figure out my central air unit. The compressor would click but not kick on and now the condenser fan won't come on either. I'm hoping it's just the start capacitor. My mom was in town and picked one up for me so I should know shortly. Like they say, if it's not one thing it's another. It's a little warm today but luckily we're having some great August temps in the mid 70's all this week.
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Hammer Time
Ultimate Carjunky
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Aug 12, 2013, 2:40 PM
Post #28 of 41
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Re: A couple different codes..B0100 and P0128
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Yep, I'm no expert on home AC but my guess is you are right about the capacitor.
Make sure it didn't burn out one of the dual 110 fuses for the outside unit too.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Aug 12, 2013, 2:41 PM)
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MarineGrunt
Enthusiast
Aug 12, 2013, 4:01 PM
Post #29 of 41
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Re: A couple different codes..B0100 and P0128
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Man you're good HT....I actually just checked power from outside box to unit. Power good at box. Checked inside a/c and no dice. Pulled the fuse and checked it and it's no good. Came on here and here you are telling me what's wrong without even being here. I need to move to south and be your neighbor. My wife would be a cookie making fool in order to pay back all of the work I'd have you doing!
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Hammer Time
Ultimate Carjunky
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Aug 12, 2013, 6:23 PM
Post #32 of 41
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Re: A couple different codes..B0100 and P0128
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I believe this is going to be an outside switch and fuse box. Mine has 2 of those tube fuses for the 220.
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MarineGrunt
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Aug 13, 2013, 12:40 AM
Post #33 of 41
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Re: A couple different codes..B0100 and P0128
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Yeah, it was the fuse in the a/c service disconnect box. The main breaker for the a/c didn't trip.
I installed the new capacitor and fuse and still no dice. The condenser fan is running now though but I think the only thing wrong was the blown fuse and believe the old capacitor was still good. The a/c unit has a hard start kit installed. When I turn the a/c you can hear the hard start relay?(little black box) click and it makes the yellow wire (power to compressor) move so I think it's attempting to start the compressor. I have a feeling it's locked up. and isn't worth replacing due to its age. I put a whole new furnace and ac in our previous house a couple of years ago. I sure wish I would've waited on it! I'm not sure if I mentioned it and it's too late and I'm too tired to look but when I hooked the gauges up to the a/c when it quit working the low side pegged out. Will it do this if the compressor isn't running or is it a sign that the compressor is toast?
Not sure if you guys know but I've heard sealed compressors aren't serviceable. Not that I'm going to but why couldn't someone cut it open, service it, and weld it back together? Then again, I do like trying to do things they say can't be done.  I need to ohm the windings and see if I find anything. But, if it's a mechanical failure, that won't tell me a thing, right? I think another thing I need to do is check the voltage at the compressor when it attempts to kick it on.
There's really nothing else to replace. I would think that if the hard start kit was bad the compressor would at least make some kind of noise and still possibly kick on. With the hard start kit already installed that probably tells me the compressor was having some issues kicking on and it finally went. I can tell the unit is old and it definitely did its job well. I bet it's pushing 20+ years.
I need to get back to sleep. Whenever I'm trying to figure something out my mind races and I don't sleep for crap.
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Hammer Time
Ultimate Carjunky
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Aug 13, 2013, 2:55 AM
Post #34 of 41
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Re: A couple different codes..B0100 and P0128
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It's time to say good bye to it. The efficiency of the new ones will save you enough money to justify the replacement.
If that's 20 years old it probably around a 10 SEER and you you can get up to 17 SEER
I changed mine out about 8 years ago and went from a 10 SEER to a 13 SEER and dropped my electric bill by 25%. and mine wasn't really that high to start with.
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Tom Greenleaf
Ultimate Carjunky
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Aug 13, 2013, 6:29 AM
Post #35 of 41
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Re: A couple different codes..B0100 and P0128
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Have to agree. Have a 5 ton unit fairly new, 12 SEER up from who knows what and uses 1/2 the juice. It's total overkill for me personally and this year hasn't worked hard but this type (not my trade) removes moisture which pours out the side of the house like a hose running. Love that part anyway.
If you use air a lot the payback would be fast. How long will this newer junk last - all bets are they will fail earlier than older stuff as I can't believe super high efficient thin metals are going to hold up like the crap you could hit with a hammer and not hurt it?
Season coming to an end for us MG. Always (here) a good time price wise to get off season stuff,
Tom
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MarineGrunt
Enthusiast
Aug 16, 2013, 4:16 AM
Post #36 of 41
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Re: A couple different codes..B0100 and P0128
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I'm 99% sure it's the compressor. I ohmed the windings and they didn't had up. I guess the readings from common to run + common to start are suppose to = run to start. My readings don't add up. I guess it means there's an open winding. At least it made it through most of the summer. With the a/c season being almost over I have some time to shop around.
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Tom Greenleaf
Ultimate Carjunky
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Aug 16, 2013, 5:22 AM
Post #37 of 41
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Re: A couple different codes..B0100 and P0128
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No doubt we have a similar climate to deal with so timing if this had to fail is good. Knowing you MG you'll find just the parts of the thing somewhere if you choose that vs an entire new set up.
Do the math for the payback of fix vs new for your needs. I do doubt new will last as long if only a motor simply not made as well as ancient stuff for many things home or vehicles.
On my third at my own place acquired @ just 8 years old the original burnt out compressor. Decided on whole new and it was more efficient big time but it too totally failed yet again. Current is now 1/3 more powerful and again twice the efficiency but the cost would have paid my entire electric bill for everything if it failed yet again so "Clara Peller" -- "Where's the Beef?" as she said.
IDK - I don't think the outdoor parts like Winters. Some cover thing, some don't and so far haven't seen any benefit in covering them up?
Tom
(This post was edited by Tom Greenleaf on Aug 16, 2013, 5:24 AM)
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MarineGrunt
Enthusiast
Aug 23, 2013, 7:48 AM
Post #38 of 41
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Re: A couple different codes..B0100 and P0128
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CEL is back on and temp gauge is acting funky. Looks like I'll be replacing the CTS. I figured I wouldn't get lucky enough to have it be just some air in the system. It never seems to work that way for me.
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Discretesignals
Ultimate Carjunky
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Aug 23, 2013, 6:32 PM
Post #39 of 41
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Re: A couple different codes..B0100 and P0128
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Smack it with a hammer...lol
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Hammer Time
Ultimate Carjunky
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Aug 23, 2013, 6:52 PM
Post #40 of 41
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Re: A couple different codes..B0100 and P0128
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You rang?
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