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05 dodge caravan ac/ blower issue


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bearded
Novice

Sep 29, 2016, 2:55 AM

Post #1 of 10 (432 views)
05 dodge caravan ac/ blower issue Sign In

Hi every one,
2005 dodge caravan sxt
3.3 gas only
118000
Ok here it is 05 dodge caravan sxt ac has good charge, compressor works, no leaks found. also blower has slowed, also seems I may have a blend door issue. here are the problems when the ac is on it blows cool but not cold and not very strong even with recirculation on, ac will blow out dash vents only, defrost is the only working vent when not in ac selection. I noticed after a while the evaporator freezes up, (see water under p/s after car sits for a while) is this all blend door problems ? not enough air flow for ac to efficiently evaporate? or is it multiple problems blower motor and blend door actuator or am I way of base?
thanks, bearded


Discretesignals
Ultimate Carjunky / Moderator
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Sep 29, 2016, 4:27 AM

Post #2 of 10 (423 views)
Re: 05 dodge caravan ac/ blower issue Sign In

Condensate coming out for underneath the vehicle from the AC drain doesn't indicate a froze over evaporator. You need to find out why your mode doors are stuck blowing out the defrosters only. You might need an enhanced scan tool for this. Solve the air delivery issue first and then tackle any other issues.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Sep 29, 2016, 4:27 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 29, 2016, 4:28 AM

Post #3 of 10 (421 views)
Re: 05 dodge caravan ac/ blower issue Sign In

It's going to take some checking things. 1st - is it warm and humid enough for active condensate to be dripping under vehicle buy doesn't? Then when shut down you find the puddle or are you seeing frost. How did you conclude that evap is icing?


If so it shouldn't of course but if allowed to way too long will block air flow but don't think diverter doors. Still shouldn't but if air has too much "residence" time passing over evaporator for any reason it would be more apt to freeze up. Cabin air filter if applicable, rodent nests in the duct work or all around might see that with blower alone taken out or other evidence.


Pressures always a clue of what's going on where. Please post those and real ambient temps when taken at what RPM.


Have to begin ruling things in or out,


T



bearded
Novice

Sep 29, 2016, 4:44 AM

Post #4 of 10 (415 views)
Re: 05 dodge caravan ac/ blower issue Sign In

Thanks for the reply. The reason I'm suspect of freezing is no matter the outdoor ambient tempiture there is an abundance of water but not till the van has been turned off and some time passes, just an assumption though


bearded
Novice

Sep 29, 2016, 4:58 AM

Post #5 of 10 (414 views)
Re: 05 dodge caravan ac/ blower issue Sign In

I work on heavy equipment so my automotive knowledge is limited specially because I strictly do steering suspension/ drivetrain , any way I know condensation can and is normal My concern with it is it, when the van is turnt off and a half hour or so passes then the water starts dripping down and it is very cold.
Thanks for the quick response!


Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 29, 2016, 5:06 AM

Post #6 of 10 (413 views)
Re: 05 dodge caravan ac/ blower issue Sign In

NO. It can be too cold or too dry for condensate. It's a dew point thing right on the money. Temp of evaporator and dew point temp. The actuators are another thing or if somehow iced enough just might make doors not work properly?


Need some info as both observations are not necessarily related or are they?


T



Hammer Time
Ultimate Carjunky / Moderator
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Sep 29, 2016, 5:18 AM

Post #7 of 10 (409 views)
Re: 05 dodge caravan ac/ blower issue Sign In


Quote
Ok here it is 05 dodge caravan sxt ac has good charge,


What does that statement mean? How did you determine that?



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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.



bearded
Novice

Sep 29, 2016, 5:37 AM

Post #8 of 10 (407 views)
Re: 05 dodge caravan ac/ blower issue Sign In

I think there is a two separate issues, but I'm no expert I have a pretty nice scanner that is compatible with automotive, can that help me get the right diagnosis?


bearded
Novice

Sep 29, 2016, 5:53 AM

Post #9 of 10 (405 views)
Re: 05 dodge caravan ac/ blower issue Sign In

Referring to the refidgerant charge? If so a tech from my work vac down, recharged checked system for leaks with die and a sniffer


Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 29, 2016, 6:11 AM

Post #10 of 10 (401 views)
Re: 05 dodge caravan ac/ blower issue Sign In

OK on charge and should have blown cold if ambient temps allowed for a while. A leak could already be unseen but we aren't there yet.


Temperature outputs of working A/C can fail for many reasons not just charge. Have to narrow this down some more,


T







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