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Discussion Starter #1
Any ideas? I swapped an EFR onto my car and since then I have not had any heat in my car at all. The AC also is not blowing cold, cool, but not cold. I can hear the compressor kick on, and the rpm's drop slightly when I turn the AC on but it doesn't perform like it used to. My first thought was air in the coolant lines. We refilled the coolant lines by holding the overflow tank as high as possible and unfastening the small line on top of the motor. Filled until it was a steady stream coming out w/o bubbles. Since then we have held the coolant overflow tank up and repeatedly squeezed the upper radiator hose, both while the car was off, while it was idling, and at 2,500 rmp's. Also jacked the car up on the drivers side and repeated the previous process. No luck. The car is not overheating at all. And I live in TX where it is not unusual for it to get above 100 degrees. It stays well within normal operating temperatures even after hard driving. Anyone have any suggestions?
 

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I'm assuming you have already tried recalibrating the climate controls?

Actuator Recalibration
When replacing an air temperature, mode, recirculation actuator or the HVAC control assembly, the following calibration process needs to be performed:

Important: Do not adjust any controls on the HVAC control assembly during self-calibration. If interrupted, improper HVAC performance will result.

1) Turn ON the ignition with the engine OFF.

2) Turn the Temperature dial all the way to the right.

3) Turn the blower control dial all the way to the right.

4) Turn the mode position dial all the way to the left.

5) Simultaneously press and hold the A/C and Defrost buttons until the LED's start to flash.

6) Once the LED's stop flashing, calibration is complete.
 

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I'm w/ Bob - the recal is an easy first step. Especially considering no overheating and you can hear the A/C compressor cycling when it should.
 

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What part is the EFR? It seems to be pointing to what you replaced???
 

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Something simple, like a pigtail connection on one of the wires not clicked completely into place?
(did you unhook something during the EFR swap?)

Edit: I am assuming he meant EFR turbo swap.
 

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So an EFR is a turbo swap?? AND if it was a turbo swap who did the job? if I may ask..
 

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Discussion Starter #9
My bf and I did the EFR turbo swap. At the same time I also switched the intake manifold for one with a 5th injector. I also thought of a loose connection but I have checked and rechecked and rechecked everything and cannot find anything loose or disconnected. I may have to pull the intake manifold off though and see if there is anything underneath it that I just can't see while it is on the car. Thanks for everyone's help so far.
 

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Discussion Starter #10
What really gets me is the no heat. I keep thinking it is air in the coolant lines but I can't tell you how many times I've tried the known fixes. The car has been driven about 2k since I put the EFR on, so it has been through a few cycles. And not once has it even thought about overheating. I'm just stumped. I'm sure it is something simple, I just cannot for the life of me find it.
 

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OK thanks for your reply. So you did more than one major mod at the same time. No offense, but I would of done one mod at a time, check the cars function, then proceed to the next mod. In this case, with multiple mods it will be difficult IMO to actually point to the exact problem. Perhaps going backwards, de-installing each item will help pin point the problem. Did you check for any fault codes? Also were all the parts for the mods, were they brand new?
 

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What gets me is no heat and no A/C. No heat and no overheating leads me to believe it's not air trapped in the cooling system. Could be a bubble in the heater core, but no A/C leads me to two possibilities.

Electrical.

Vacuum.

(If I understand the HVAC system to work the way I think it does.) A signal from the dash switch will determine what position the baffles/valve type thingies in your HVAC should switch to. This controls whether the source air is drawn from the heater core or A/C. If this isn't moving and is just stuck somewhere in the middle you'll just get what you get, not what you want.

I believe the mechanicals are operated off of vacuum, but it could be electrical, like a stepper motor or some shtuff like that.
 

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What gets me is no heat and no A/C. No heat and no overheating leads me to believe it's not air trapped in the cooling system. Could be a bubble in the heater core, but no A/C leads me to two possibilities.

Electrical.

Vacuum.

(If I understand the HVAC system to work the way I think it does.) A signal from the dash switch will determine what position the baffles/valve type thingies in your HVAC should switch to. This controls whether the source air is drawn from the heater core or A/C. If this isn't moving and is just stuck somewhere in the middle you'll just get what you get, not what you want.

I believe the mechanicals are operated off of vacuum, but it could be electrical, like a stepper motor or some shtuff like that.
 

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Discussion Starter #14
No they were not new, but I got them from a VERY reputable forum member. I bought everything as a kit from him so it all went on the car together. In any case neither the turbo nor the intake manifold affect the heating/AC of the car. HOWEVER it is very likely that something from that system came loose during the install. It would have been easier to pinpoint of I had done things one at a time but it would have also made the tuning process very drug out and needlessly difficult. I do understand what you are saying, and you are right. But I don't have the tunes to start pulling things off and replacing them back with stock parts. If it comes down to it I can live without heat and AC. I don't WANT to, but I certainly could, lol. I just thought I'd hop on here and see if anyone had any ideas before I paid someone to look it over and see if they can find what I'm not seeing. Again, I really do appreciate all of the replies. I'll let you know if I get it figured out :)
 

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Discussion Starter #15
What gets me is no heat and no A/C. No heat and no overheating leads me to believe it's not air trapped in the cooling system. Could be a bubble in the heater core, but no A/C leads me to two possibilities.

Electrical.

Vacuum.

(If I understand the HVAC system to work the way I think it does.) A signal from the dash switch will determine what position the baffles/valve type thingies in your HVAC should switch to. This controls whether the source air is drawn from the heater core or A/C. If this isn't moving and is just stuck somewhere in the middle you'll just get what you get, not what you want.

I believe the mechanicals are operated off of vacuum, but it could be electrical, like a stepper motor or some shtuff like that.
Thank you! That sounds pretty close to what is happening. I do get very very slight temp changes when I move the temp control from cold to hot. However if I turn the AC on while it is on the hot side, any tiny bit of heat I had goes away and is replaced by cool air.
 

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A little lunchtime checking here. The air distributor does indeed appear to be vacuum driven. I wasn't able to find a diagram of where that line is or attaches and don't have my shop manuals here at the office. I'll try to remember to look tonight.
 

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This one is strange. The symptoms as you describe them sound exactly like what can happen when the temperature control is out of calibration (IE: No heat at all, and just barely goes to cool; like the dial doesn't work)

But since you ran the recalibration twice with no success, this suggests a mechanical/electrical/vacuum failure somewhere. And since you did a major mod, I am still betting on something got disconnected that you are just not finding.
 

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This one is strange. The symptoms as you describe them sound exactly like what can happen when the temperature control is out of calibration (IE: No heat at all, and just barely goes to cool; like the dial doesn't work)

But since you ran the recalibration twice with no success, this suggests a mechanical/electrical/vacuum failure somewhere. And since you did a major mod, I am still betting on something got disconnected that you are just not finding.
:agree: I think that what ever it is, it could be possible that it is simple, you just haven't touched it yet, or a broken, pinched wire or cable somewhere..:willy:
 

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Discussion Starter #20
Yep, I'm thinking you guys are right. Unfortunately I just cannot find anything anywhere. Spent about an hour going over everything today and just can't find a thing out of place. Taking it to the dealer tomorrow to have my ESC issue fixed and asked them to take a look at the AC as well. At least the ESC is covered under warranty! :)
 
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