I have a 90 Mustang and I recently converted my a/c to R134. I bought all new parts compressor, condensor, lines, etc. In the morning and evenings the a/c blows very cold. During the day in 90 degree days at idle it only blows cool air and on the highway the a/c is cold, but I think it should be colder. The biggest problem is at idle. The cool air just isn't enough to cool the car on these hot days. I just bought a new fan and clutch and my car never runs hotter than 200 degrees but somehow it doesn't seem to be enough to keep the a/c blowing cold air. I thought about replacing the stock fan with a taurus fan or running a fan in front of the condensor. Anybody have any other suggestions?
Need A/C help
- Thread starter twinsnakes23
- Start date
-
Sponsors (?)
R12 & R134 have different cooling characteristics. They do not act the same when used in the same system. R134 needs a larger condenser (A/C coil in front of the radiator) to properly condense the gas into a hot liquid. As a result, R12 systems converted to R134 don't cool as efficiently as a system designed for R134. If it becomes a serious problem, you might want to consider adapting a condenser from a 94 or later Mustang. This will involve some flaring of the lines for new fittings, fabricating some connections and mount brackets. You will need to do a vacuum down and recharge once the fabrication work is finished..
LiquidGT
Member
Actually when I went to a Taurus fan my a/c benefited as a side effect, my a/c performance used to be like what you described in your first post with a stock fan and a Black Magic fan. With the Taurus fan it still doesn't get "too cold" like a newer car, but I don't sweat like I used to with the A/C on either on a 90* day either. I'm sure a Sn95 condenser would help the old Fox systems too.
A small fan (like the deals they sell at Autozone) in front of your condenser should help out and would be simpler than a Taurus fan if you're not confident with wiring. I would still upgrade to a 3G alternator if you haven't done so.
Unfortunately I cant figure out why my car sometimes stalls when I release the clutch when coming to a stop with the A/C on??? So I'm leary on when and where I use it.
A small fan (like the deals they sell at Autozone) in front of your condenser should help out and would be simpler than a Taurus fan if you're not confident with wiring. I would still upgrade to a 3G alternator if you haven't done so.
Unfortunately I cant figure out why my car sometimes stalls when I release the clutch when coming to a stop with the A/C on??? So I'm leary on when and where I use it.
LiquidGT
Member
I thought about the VSS and its the only thing I havent tried messing with. Last summer I ran through the checklist, swapped a new IAC for a while, ran the codes, the freon isn't low... nothing. I grabbed one of those IAC adjuster plates and it seemed to help last year... but not this year.
Some days it works well and some days it wants to act up, more so when I come from a more aggressive stop or down a hill at max vacuum.
Similar threads
