I gather the reed valves are internal and non-DIY accessible--correct?
Damn, I just bought that compressor a year or two ago.
Anyone know if other model Benzes used the same Nippondenso compressor in
'87. As Zach alluded, there's an '87 260E in the local Pick-a-Part, and
it'd be great if that
Oh, and another possibility is that your gauges are not making
good connection to the system and are lying. I've had this happen,
it caused me to replace (unnecessarily) the compressor in the
Chicken Wagon.
http://userweb.windwireless.net/~jimc/cwair.html
-- Jim
I gather the reed valves are internal and non-DIY accessible--correct?
Yes.
Reed valves can be broken if the compressor sucks liquid refrigerant.
Anyone know if other model Benzes used the same Nippondenso compressor
in
'87. As Zach alluded, there's an '87 260E in the local Pick-a-Part,
Toyota, Benz, and Nissan, along with occasional US makers, used that
compressor. Nippondenso, don't have the model number handy.
Used in the W126, W124 chassis, Camry, Accord, and other. Take a look.
Check the low pressure switch for a short first, and check to make sure
the clutch is good
Tearing into compressors generally requires more dollars in special
tools than the price of a new compressor. Speaking of which, that
compressor that you bought a year or two ago, was it new or rebuilt. If
it was rebuilt, chances are , it's a bum compressor. I quit wasting my
time and
Zeitgeist wrote:
Anyone know if other model Benzes used the same Nippondenso compressor in
'87. As Zach alluded, there's an '87 260E in the local Pick-a-Part, and
it'd be great if that compressor were the same.
Mercedes inconveniently lists the AC compressor as an engine part and
not a
An Ebay seller claims the following model/years use the Nippondenso 10P15C
compressor:
1985-1993 190E
1987-1989 260E
1986-1993 300E
1988-1993 300SE, 300SEL
1988-1993 300CE ,300TE
1990-1993 300D 2.5L
1986-1987 300 TD, 300SDL
Unfortunately, other sites claim that some of those models use the
Also, the compressor is now cycling off if I raise the rpms much above
idle. I strongly suspect that my compressor is shot---gr.
Why would it? Some sensor has to command this, so find out which
it is and that'll tell you more about the problem.
Jim, how have you previously discharged
The compressor is starting to get noisy too. I can really feel the engine
bogging down when the clutch engages, so I suspect the speed sensor is
detecting a rpm differential--seizure is imminent.
On 8/5/07, Jim Cathey [EMAIL PROTECTED] wrote:
Also, the compressor is now cycling off if I raise
The compressor is starting to get noisy too. I can really feel the
engine
bogging down when the clutch engages, so I suspect the speed sensor is
detecting a rpm differential--seizure is imminent.
If that's it it will cycle off and not come back on until
the Klima is power-cycled. If it
detecting a rpm differential--seizure is imminent.
If it's seizing up the debris could foul the reed valves,
causing your pressure symptoms.
-- Jim
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So, my AC ('87 300TD) seems to be experiencing multiple failure modes. One
is the weak output of the fan. The other is the weak output of cooling. I
suspect the former is due to clogged evaporator coils, which apparently
can't be rectified short of a complete dash removal. The fan appears (by
Way low on freon -- high side at 70F and 1500 rpm with compressor
engaged should be about 250 psi. The other choice is a bad compressor,
but you should have more pressure than that in the low side if the
compressor is bad. May have a bad low pressure cutout switch (or it's
wired around) too.
Go buy the 300E at pickapart (probably $300-400 if the engine is still
there) and do some dissection of the dash and AC on that before you
fuck with the nice car...
That is my advice..
-Zach
--- Zeitgeist [EMAIL PROTECTED] wrote:
So, my AC ('87 300TD) seems to be experiencing multiple
- Low side readings = 50 psi
- High side readings = 65 psi
- Vent temps = 50 degrees @ ~70 degrees ambient
- Compressor engages, yet doesn't cycle off and on as I'd suspect if
there were a low charge level.
- sight glass is cloudy
1) Low charge
2) leaking reed valves in
Well the evaporator is easy to clean. Just pull the fan and its right
there. Takes all of 10 minutes at most to get it removed.
On the pressures, sounds like your compressor is not compressing to me.
Zeitgeist wrote:
So, my AC ('87 300TD) seems to be experiencing multiple failure modes. One
Yea, that too, could be low.
Peter Frederick wrote:
Way low on freon -- high side at 70F and 1500 rpm with compressor
engaged should be about 250 psi. The other choice is a bad compressor,
but you should have more pressure than that in the low side if the
compressor is bad. May have a
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