No Aircondition after Pressure-washing engine :(!
 

I have a 94 Nissan Altima (4CYL manual) which had very good AC. Until
the point when I pressure-washed some oil gunk from around the AC
compressor. It stopped working right then. Any ideas?

Symptoms:
- No blue dashboard light when I try to turn the AC on.
- No blown fuse
- No click heard (compressor cycling) when I try to turn the AC on.
- Cleaned the wire/connector going to the compressor
- When AC relay is actuated manually (on an extender cable, fed by
separate 12V) the switched circuit draws the current but no cold air.

"Jopki Jopa" > wrote in message
.. .
>I have a 94 Nissan Altima (4CYL manual) which had very good AC. Until the
>point when I pressure-washed some oil gunk from around the AC compressor.
>It stopped working right then. Any ideas?
>
> Symptoms:
> - No blue dashboard light when I try to turn the AC on.
> - No blown fuse
> - No click heard (compressor cycling) when I try to turn the AC on.
> - Cleaned the wire/connector going to the compressor
> - When AC relay is actuated manually (on an extender cable, fed by
> separate 12V) the switched circuit draws the current but no cold air.
>
Blow dry all ac connections. Should resume. Luck, s

With the relay actuated manually, check if the wire going to the
compressor has any power. If yes, then the problem is with the
compresor. If not, it is further upstream. Either way, it sounds like
it is an electrical problem, and should be easy to locate.

Jopki Jopa wrote:
>
> I have a 94 Nissan Altima (4CYL manual) which had very good AC. Until
> the point when I pressure-washed some oil gunk from around the AC
> compressor. It stopped working right then. Any ideas?
>
> Symptoms:
> - No blue dashboard light when I try to turn the AC on.
> - No blown fuse
> - No click heard (compressor cycling) when I try to turn the AC on.
> - Cleaned the wire/connector going to the compressor
> - When AC relay is actuated manually (on an extender cable, fed by
> separate 12V) the switched circuit draws the current but no cold air.

Probably electrical. But first, make sure you didn't get a bunch of that
'oil gunk' onto the belt driving the compressor.

--
Paul Hovnanian
------------------------------------------------------------------
Madness takes its toll. Please have exact change.

Jopki Jopa wrote:
> I have a 94 Nissan Altima (4CYL manual) which had very good AC. Until
> the point when I pressure-washed some oil gunk from around the AC
> compressor. It stopped working right then. Any ideas?
>
> Symptoms:
> - No blue dashboard light when I try to turn the AC on.
> - No blown fuse
> - No click heard (compressor cycling) when I try to turn the AC on.
> - Cleaned the wire/connector going to the compressor
> - When AC relay is actuated manually (on an extender cable, fed by
> separate 12V) the switched circuit draws the current but no cold air.

If your blue A/C light operated before the powerwashing event and now
it doesn't, then you blew a fuse. I would search the obvious fuseboxes
for a low amperage "A/C" or "MG clutch" or "Compressor" fuse. If you
don't find it, look in the left and right kick panel areas for a small
fuse/relay holder. Some Asian systems wire their A/C systems as if
they are an add-on, even if they come with A/C from the factory.

Toyota MDT in MO

You have an open connection to the compressor. It will most likely be
OK after it dries thoroughly.

Professor
www.telstar-electronics.com