AC blows ice while moving but mild at idle

[e30davie]

Like all good things the "nasty" stuff works best. and the replacement less nasty stuff often underperforms in direct comparison.

You could ague that if it was that cold it was overperforming - the bean counters approach.

[TobyB]

this thread is useless without high side and low side pressures.

The compressor on the ti is failing- below 1500 rpm, there's hardly any pressure differential at all,
but by 2000, it'll build to almost normal* and cool reasonably well.

t
*corrected for temperature and humidity.

[nadodude111]

this thread is useless without high side and low side pressures.

The compressor on the ti is failing- below 1500 rpm, there's hardly any pressure differential at all,
but by 2000, it'll build to almost normal* and cool reasonably well.

t
*corrected for temperature and humidity.

this thread is useless because people would rather share political opinions about Freon type rather than answer my questions. People don’t take the time to read either or you’d see I posted the pressures.

Idling: Low: 50 and high: 115. 6pm 85F ambient temp.

[uturn]

Here's your temp and pressure chart.
For 86 degrees ambient you should be about 32 degree on the evaporator, 30psi on the low side and about 175psi on the high.
yeah... you have a tired compressor.

[nadodude111]

Here's your temp and pressure chart.
For 86 degrees ambient you should be about 32 degree on the evaporator, 30psi on the low side and about 175psi on the high.
yeah... you have a tired compressor.

thank you. First worthy answer. After some research, looks like I can still have the R-12 compressor rebuilt. May source another r-12 compressor at a junk yard to send off for rebuilding. Then switch them out so I don’t go weeks without AC.

[TobyB]

this thread is useless because people would rather share political opinions about Freon type rather than answer my questions. People don’t take the time to read either or you’d see I posted the pressures.

Idling: Low: 50 and high: 115. 6pm 85F ambient temp.

We'll get you a refund right away.

t

[nadodude111]

We'll get you a refund right away.

t

Goodwill would never.

[cory58]

Just found this thread. Assuming you are in the USA. Original E30 compressors can definitely be rebuilt. My Touring had a similar "basic" R134a conversion. The front seal in the Seiko compressor failed and I had it rebuilt by Discount Auto AC in Daytona Beach, FL. Great customer service and price. Replaced the condenser and drier at the same time (nothing under the dash) and been ICY ever since. Your situation is a little bit different - my compressor was still working fine when the seal failed, but it may still be worth your time to contact Discount Auto AC. Best of luck.

[nadodude111]

hello! Sending an update. I installed a new (used) and free remanufactured Bosch compressor and reloaded with R12. Blows 40 f while idling and 40 while on the highway. Doesn’t cycle just consistently blows cold. We’re ready for Texas summer 😎🥶

[nadodude111]

hello! Sending an update. I installed a new (used) and free remanufactured Bosch compressor and reloaded with R12. Blows 40 f while idling and 40 while on the highway. Doesn’t cycle just consistently blows cold. We’re ready for Texas summer :)