2008 Honda Pilot Air Conditioning Problems
Our air conditioning suddenly stopped, apparently on start-up recently. The compressor doesn't kick in at all, and the ventilation fan doesn't turn on either. No heat either. Serpentine belt is fine. The control console for heat and air conditioning all seems to look and function normally. Just no air flow or compressor action.
I checked the fuses in the main fuse panel and under the driver's dash and all are fine.
I also switched around the large relays (the ones which are identical) in the main fuse panel in case one was blown, with no results.
Any ideas?
I checked the fuses in the main fuse panel and under the driver's dash and all are fine.
I also switched around the large relays (the ones which are identical) in the main fuse panel in case one was blown, with no results.
Any ideas?
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But we're all pretty fluent in chat typo around here. :shades:
Your reply is just what I was hoping for, a solution that was not obvious but works. I dropped down the glove box and I see a small black electrical relay box or something way over to the right by the side of the access opening. Could that be it? Looks like maybe a relay.
Also I see a vertical black plastic removable panel to left of center of the opening which I suspect has the cabin air filter behind it. I'll have to remove a horizontal steel bar though first to get it out. And I see another foam air filter looking at me which is visible and I guess is the recirculating air filter.
Any other tips?
Thanks again.
Q. My question has not been addressed.... The question is... I have a 2004 Honda EX Pilot. the a/c has stopped blowing. The blower works intermittently and when it blows it only blows out of the back unit. I have checked all fuses and they are all working. When the A/C kicks in it does blow cold air.
Edited by Customer (name blocked for privacy) on June 29 2008 at 7:20pm
A. Does the air blow out the front vents on high speed or full auto?
Sounds like the power resistor for the front blower motor is bad.
There is a way to test it to see if its definately bad.
Here is how:
1. Carefully release the lock tab on the No. 3 terminal (ORN/BLK) (A) in the 5P connector, then remove the terminal and insulate it from body ground.
1. Reconnect the 5P connector to the power transistor.
2. Supply 12 volts to the No. 3 cavity with a jumper wire.
3. Turn the ignition switch ON (II), and check that the blower motor runs.
o If the blower motor does not run, replace the power transistor.
o If the blower motor runs, the power transistor is OK.
---
I did this test and apparently the transistor is blown since the motor did not run.
For others of you with the same problem, O'Reilley's Auto Parts here in Minnesota shows the part on their computer and it was special ordered for $56 plus $7 shipping. Took 4 days. The new part is from BWD Engine Management Technology of NY state, part #RU 1044 "Resistor", says the box.
O'Reilley's also has the pollen air filter for $20.
Thanks, leo41.
Cause is Open circuit in the power transistor
Looking for replacement for Power Transistor as local dealer does not stock it.
Price is @$150.00
Is there a place to buy?
http://www.hondapartsdeals.com/
I have a 2003 Honda Pilot. Although these symptoms similarly relate, I wanted to clarify. As with the other gentleman, my ac stopped blowing cold air on start up. The control panel appears to work fine and I can adjust what appears to be the back A/C only. No air is felt from the front vents regardless of the control settings selected. I was a little confused on the part that needed to be replaced as I only had three screws holding my unit in place. It sounds as if the part is the same one based on the description in these posts. Mine was visibly white on the side that can be viewed under the dash and had a integrated plug. I wanted to make sure with the symptoms I am seeing I will be replacing the correct part. I was reading the email below regarding how to test the blower to figure out if it is operational or not and that also lead to some confusion for me. Is there a way to test the transistor to find out if it is bad? Thanks, Chris
Yes my original front blower resistor was whitish or beige- gray on the visible side as installed. It is sitting at the bottom of the ductwork facing downward, very close to the firewall in the passenger side foot area. And yes, I think there were three screws, not four.
I unscrewed and popped down the resistor, used a VOM and did the test and mine failed the test. Then I bought the replacement resistor over the Internet (driving around for a few days without A/C or a glove compartment, and it worked great. But make sure to clean out the accessible ductwork of all dust and leaves and junk with a vacuum and replace the pollen filter too.
Hope this helps.
Todd
There seems to be a clip on both sides holding the white plug into the black part of the transistor, and I can't get those clips loose at the same time.
Thanks,
Kim
http://www.hondapilot.org/forums/showthread.php?s=&threadid=15366
I had the grille-insert installed to avoid such problems.
http://www.carspace.com/bigdadi118/Albums/08PilotGrille01/PX02.jpg/page/photo.ht- ml#pic
Hi every one
I think I'm having similar problem with mine too even thought it is little different.
When I turn on my Heat the front vent are blowing on air no heat while the rear vent are blowing normal heat as wanted.
I hope someone can give idea where to start.
thanks
willwaal :confuse:
have insufficient amount of Freon in the system. Have you had the dealer checked for leaks in the A/C system yet?
My 2003 Pilot (86,000 miles) is at the dealer for service now. Loud fan noise when I start the engine with a/c on and on cold air coming out on all vents. When the suv is running, the noise is substantially lessened and cold air comes out nicely.
It was diagnosed to have a failing a/c compressor that is spreading metal fragments to the entire a/c system. The service advisor told me that the entire a/c system has to be replaced and it will cost $5,100.00+tax. I was also told that if I had it fix much earlier, the damage would have been much less. I told him that I follow the maintenance schedule religiously and take it for service exclusively at their dealership. They should have noticed the problem and made the appropriate repair. But they did not. He also told me that this is a known problem on the CRV but not on the Pilot. There goes my plan for buying a CRV.
I called Honda customer service and the guy that I talked was very pleasant but could not offer any assistance. He will not even transfer me to his manager because he said that nobody can help me even if I talk to an executive. I think I have no choice but to have the repair done at a Honda dealership otherwise we cannot use the car or sell it in it's current condition.
With this experience, I don't think I'll buy another Honda ever again. I won't even recommend it to anybody. I'm very very very disappointed with Honda for using cheap parts.
Do any of you know someone or a number that I can call at Honda to try to get financial assistance like a discount on parts, etc.?
Good luck to all of us.
1. When I start the vehicle, the fans will sound working but no air from the vents. If I press the mode button to what I want, the air will come out quickly. For sure I never change the mode manually before I turn off the engine.
2. With A/C off, the fans will blow hot or cool air if I change the temperature on either the diver or passenger side. Is this normal?
Thanks in advance for your suggestions/comments.
I'm a long way from home and its hot down here in South Carolina.
The transistor assembly change-out was straightforward. Disconnect plug to transistor assembly, remove three phillips screws, drop out old and insert new one, return screws and reconnect. Heads up, its an on-your-back, under the dashboard, pretzel twisting position you'll find yourself in doing this...however, its a money saver if you elect to do it yourself.
http://www.youtube.com/watch?v=xWUy2w5_BEY
Thanks again for all of your help!
Specifically, if the passenger lowers the AC to a temp. below the driver's temp. the air comes out colder on the passenger's side but it will just trickle out - the fan will not kick up until the driver's side temp is lowered. Even if the passenger's side is lowered to Low, the coldest it can be set at, the air just barely comes out.
The dealer tested the temperature and said it is coming out colder and that this is normal. He said he tested it on two other identical Pilots and they did the same thing.
If you are on the driver's side then the fan will kick on right away when you lower the temp.
Any ideas?
Thanks you.
Symptoms/Observations:
- This has been happening off and on for the last 6 months. It has gone weeks or a month without happening at this time, then the issue reappears.
- blower Motor generally fails to come on when vehicle is started, when it fails
- motor appears to not have power at all, when it fails (it's on, or it's off)
- condensor appears to be working, as cool air continues to come out of vents if vent is open and car is moving
- Motor will come back on occasionally, and it coming back on seems to be tied to getting the vehicle up to a certain speed (50-60mph), or RPM (not sure?). Once it comes back on, it stays on.
- Sometimes, shutting the vehicle off, and restarting, will bring power back to the blower. Other times, it will not.
- Interestingly, the radio has lost power several times during this period of time of intermittent loss of power to the blower. NOT at the same time, ever. Shutting the vehicle off and back on seems to bring power back to the radio, although shutting it off and on had to be done several times on one occasion, and didn't work on another occasion (power randomly came back to the radio the next time the vehicle was driven).
- A local mechanic who is a relative of a friend heard about this issue and immediately identified the problem as a faulty NEUTRAL SAFETY SWITCH, but I have been unable to get this person to confirm this, or do the work to fix it. Based on what I've read on neutral safety switches, I see no way that this could be a root cause for the failure of power to the blower motor or radio.
- My mechanic that generally works on the vehicle was unable to recreate the problem, and doesn't have any theories on how to fix it.
Does anybody out there have any theories about what could be causing it, and have a strategy for systematically tracking down a way of fixing it?
also would like to add that for almost two years now ever so often it sounds like to me the fan motor is making a weird sound. especially if i hit a bump. its a grinding type sound. I can turn the power off & it will quit. this happens w/ heat or a/c. sometimes if i have my fan on high it will do it & the only way to keep it from happening @ that paticular moment is to keep on low. not sure if the two problems coincide. I have no prob w/ my heating & my a/c worked perfect last summer.
thanks for any help.
Anyone else having this issue??
I have a Honda RD1 with similar A/C problems except the fuses in the engine compartment are being burnt. Where can this come from? The electricians have not touched the resistor. We all need help
Hollipro