Re: [DML] A/C Help Needed...
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Re: [DML] A/C Help Needed...



I have never experienced this problem in a DeLorean, are you sure you are interpreting the correct values and is your equipment hooked up properly.

Is the compressor cycling every 7 to 10 seconds? What is the temperature of the air blowing from the vents after 1 minute?

Concerning your cooling fans cutting out before the compressor, you probably have a defective cooling fan circuit breaker. If it is the factory installed 35 amp you will need to replace it with a 40 amp unit. You will also need to correct your backwards running cooling fans. If uncorrected the engine will overheat while driving the car.

"We're here to help you"

DMC Help / De Lorean Services / <dmchelp@xxxx>
Web Site: <www.deloreanservices.com>

----- Original Message ----- 
From: Nathan E. Green 
To: dmcnews@xxxxxxxxxxx 
Sent: Sunday, July 30, 2000 4:54 PM
Subject: [DML] A/C Help Needed...


Hi all--
After an exhausting Saturday working on the "D" I have come across a
semingly unique a/c problem. (Marty/Micah pipe in where needed...) I hope
maybe someone can help me troubleshoot.
When I bought the car, it was missing the A/C belt, presumably snapped
because of seized bearings in the idling pulleys. So, I put on a new belt,
turn on the A/C. Compressor works good, pressure builds to required level,
then compressor cuts out. Normal. This goes on for a couple minutes and all
is good, then compressor keeps going despite dangerous High Pressure values.
We reached nearly 350psi before turning the A/C off for fear of busting a
pipe. Turn back on the sytem...works good for a couple minutes then the same
thing. So what's the problem?
I am thinking we may have a bad high pressure switch that doesn't shut the
compressor off properly?(But why would it initially work, then suddenly
climb out of control??)
A second more realistic solution is a clogg in the evac? hose. So air
intially escapes, but then clogg works towards screen and gets caught in the
hose...thus air can no longer "escape" and pressures then build.
Compressor apears to work great...system works good for a couple minutes
then goes crazy. Two smaller problems(I think are unrelated...but I will
mention). Previous owner installed a clockwise fan, so I have air flow to
the outside!!. Also, front fans will quit even though the compressor runs.
The fans turn on with A/C but quits a few moments later, despite
sytem/compressor still working.(Relay problem??)
Can anyone out there help? Where are you A/C specialist type people...
Thanks.

Nate


Nathan E. Green
gzen21@xxxx

"If my calculations are correct, when this baby hits 88mph you're gonna' see
some serious s--t"
-Doc Brown: "Back to the Future"





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