intermittent AC, is it an electrical problem

40

Asked by Jun 24, 2014 at 12:48 PM about the 2004 Chevrolet Venture LT AWD Extended

Question type: Maintenance & Repair

I have a 2004 chevy venture. the A/c has been intermitently working for a while. at first I
thought the refrigerent was low, I added some but it didn't help. I took it to a mechanic
friend. he told me that I had it over charged. He bleed some off and it started working. A
few days later we went on a trip and the alternator died. after that was fixed the A/c
wouldn't work again. we were out of town so I bought a A/c charge kit that had a hose
with the low side gauge. the pressure said about 100psi. I thought that was high(not
realizing that it was because the compressor was off) so i bled some off but stopped
when it didn't help. when we got back in town my mechanic found it was from the
computer getting hung up when the alternator died. we unhooked the battery positive and
grounded it for a minute and the AC started working again. He said the pressure was a
little low and that I should add some. I did, but then the A/C started working intermittently
again. I may have added too much so I bled some back off and checked it was the low
and high side gauges but it didn't help. basically I think the pressures good, and I don't
think it has a major leak. it has been working less and less, now it isn't working at all.
with the AC on i just checked for 12v to the compressor and it was 0v. what electrical
items should I most likly look at?

5 Answers

68,935

Check the Ac relay in fuse box under hood.

2 of 2 people found this helpful.
102,165

You could also have a pressure switch starting to fail, most likely the low pressure switch as they are usually the first one to go bye bye.

2 of 2 people found this helpful.
40

I did swap the relay with another one of the same type in the fuse box. it didn't make a difference, so I don't think that's it.

68,935

If all fuse,s have been checked, relay checked,and no fire at compressor,check the ac switch itself,or wire,s running from it to compressor.

Best Answer Mark helpful
40

FYI for others that may see this post, it ended up being a wire that needed to be replaced.

4 of 4 people found this helpful.

Your Answer

Venture

Looking for a Used Venture in your area?

CarGurus has 367 nationwide Venture listings starting at $2,190.

ZIP:

Chevrolet Venture Experts

  • #1
    Tom Demyan
    Reputation
    590
  • #2
    John Carson
    Reputation
    390
  • #3
    Reelin68
    Reputation
    360
View All

Related Models For Sale

Used Chevrolet Uplander
3 Great Deals out of 864 listings starting at $1,950
Used Pontiac Montana
266 listings starting at $1,295
Used Dodge Grand Caravan
280 Great Deals out of 26,085 listings starting at $2,500
Used Toyota Sienna
357 Great Deals out of 26,800 listings starting at $1,950
Used Honda Odyssey
406 Great Deals out of 27,575 listings starting at $1,899
Used Chevrolet Suburban
367 Great Deals out of 22,967 listings starting at $1,999
Used Chevrolet Astro
228 listings starting at $1,995
Used Chrysler Town & Country
282 Great Deals out of 14,073 listings starting at $1,999
Used Chevrolet Tahoe
742 Great Deals out of 41,785 listings starting at $1,995
Used Chevrolet Equinox
987 Great Deals out of 61,297 listings starting at $1,500
Used Dodge Caravan
575 listings starting at $3,995
Used Chevrolet Malibu
976 Great Deals out of 66,081 listings starting at $1,000
Used Chevrolet S-10
16 Great Deals out of 1,257 listings starting at $1,600

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.