- #4414 of 4469
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Using AC and Power Loss and rough running when wet
by tcc21
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Jul 15, 2006 (10:29 pm)
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Been a while since posting here. I'm always afraid to see what the latest problem is with this unit! I still have my squeeky steering wheel issue and learning to accept that it's just normal.
2 things.
Anyone had a period of rough running and CHECK ENG. light come on after driving in severe rainstorms? This has happened to me 3 times now. Heavy rains and all of a sudden it starts to shudder and run rough; chk. eng. light comes on. After a day of drying out all is normal again!
Has anyone noticed the sizable loss of power when using the AC on their MPV? I certainly do! Feels like it has no guts at all; need to thrust the gas just to get up to cruising speeds of 65 MPH. When I shut the AC off it seems just fine. Mine has 65K on it now. Almost reminds me of the days of having an old 4 cyl with air and how it would drag the power down. I thought those days were gone with this V6 engine!
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- #4415 of 4469
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2001 mpv trans shutter in rev.
by mazda01
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Jul 16, 2006 (7:03 am)
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have a 2001 mpv lx when i shift into rev the trans shacks and shutters till i put i in forward anybody have the same problem and how did you fix it help 
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- #4416 of 4469
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Re: Using AC and Power Loss and rough running when wet [tcc21]
by jipster
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Jul 16, 2006 (2:15 pm)
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Replying to: tcc21 (Jul 15, 2006 10:29 pm)
Have you had your check engine light checked for codes on the shudder and run rough problem?
I have no power loss when using AC on my 2004 MPV.
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- #4417 of 4469
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Re: Using AC and Power Loss and rough running when wet [tcc21]
by nls
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Jul 17, 2006 (12:08 pm)
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Replying to: tcc21 (Jul 15, 2006 10:29 pm)
I seem to remember a similar post on another MPV forum about problems after a rainstorm, and believe that it had something to do with a faulty seal around the coil packs (if it is 2002+ model), causing a water seepage. It had photographs etc., which showed the corrosion. Sorry, but Edmunds rules will not allow me to provide a link.
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- #4418 of 4469
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Re: Using AC and Power Loss and rough running when wet [jipster]
by tcc21
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Jul 17, 2006 (9:56 pm)
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Replying to: jipster (Jul 16, 2006 2:15 pm)
No I have not because the light goes off after a day and I'm not close to a dealer to do the code check....darn!
I would need to be driving in the rainstorm and pull into the dealer. I think it has something to do with the coil issue...is there a service bulletin on this??
Thanks, TCC
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- #4419 of 4469
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Re: Using AC and Power Loss and rough running when wet [tcc21]
by user777
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Jul 18, 2006 (8:18 am)
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Replying to: tcc21 (Jul 17, 2006 9:56 pm)
isn't one of the tests using a spray bottle willed with water while the engine is idling? 
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- #4420 of 4469
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Re: Using AC and Power Loss and rough running when wet [user777]
by tcc21
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Jul 18, 2006 (8:56 pm)
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Replying to: user777 (Jul 18, 2006 8:18 am)
That's an obvious and interesting activity to see when it happens. I will give that a try this coming weekend. Thing is, I'd rather not have a coughing car for a day or so when I really need it...but it's the only way I'll find out what the problem is. I could also just call my local friendly dealer and see what 'normal' reply I get from them this time!!
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- #4421 of 4469
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Re: Using AC and Power Loss and rough running when wet [tcc21]
by jipster
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Jul 19, 2006 (4:53 am)
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Replying to: tcc21 (Jul 17, 2006 9:56 pm)
TCC, I'm not sure, but I believe it is not necessary for the check/service engine light to actually be on for the dealership to check it. If the light comes on, then the code for the malfunction is stored in the vans computer. So, even if the light goes off before getting to the dealership...the stored codes can still be read.
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- #4422 of 4469
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Re: Using AC and Power Loss and rough running when wet [tcc21]
by dtownfb
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Jul 19, 2006 (12:32 pm)
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Replying to: tcc21 (Jul 17, 2006 9:56 pm)
The codes should still be stored. You can go to most auto parts stores and they can read the codes for free. Some even give you a print out of the code.
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- #4423 of 4469
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Re: Using AC and Power Loss and rough running when wet [jipster]
by tcc21
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Jul 20, 2006 (8:57 pm)
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Replying to: jipster (Jul 19, 2006 4:53 am)
That sounds like a better plan. Would Checker Auto or Auto Zone be ones that could do this for a person? Somehow, I don't see these people able to go under the hood and work on this issue? They're more behind the counter types....??
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