Up grade compressor at stop bogging down

[Jaxrwild]

Need help from the A/C experts ! Replace old up set with this new set up, cools the cab down great, but 1985 305 with new Holley Carb really bogs down at stop lights. Stock alternator, could that be the problem???

 

[Longroof79]

Does your carb still have a high idle solenoid on it, and comes on when the A/C is turned on?
Btw, where did you purchase your Sanden compressor upgrade kit?

Welcome aboard. Are you going to tell us what you're driving?

 

[Wageslave]

Need help from the A/C experts ! Replace old up set with this new set up, cools the cab down great, but 1985 305 with new Holley Carb really bogs down at stop lights. Stock alternator, could that be the problem???

If you have switched to the Holley, you may need an idle-up solenoid to give it a little more gas at idle with the A/C on. You can steal the old solenoid from the quadrajet if you still have it or you can order a new one specifically for the Holley on Summit or Jegs.

 

[ELCAM]

The original system had a fast idle solenoid, holley makes one for your carb or one could be fabricated from cheaper components.

Holley 46-74 Solenoid Fast Idle

This universal throttle solenoid can be used with Holley bracket P/Ns 20-9 for Model 4150™ Model 4160™ or bracket number 20-47 for Model 4165™ & Model 4175™ This includes Dashpot/Solenoid Bracket Mounting Nut P/N 26-57.

www.holley.com

Wire it to the green wire going to the compressor before any temperature or pressure switches.

 

[Longroof79]

When I was running a Holley, I added a high idle solenoid. I overlooked that you swapped out your Q-jet to a Holley. Chances are that's what you'll need.

 

[Jaxrwild]

When I was running a Holley, I added a high idle solenoid. I overlooked that you swapped out your Q-jet to a Holley. Chances are that's what you'll need.

If I use my foot at the light it doesn't seem to help

 

[ELCAM]

Turn the idle speed screw on the throttle linkage up about 200 - 300 RPM and drive it with the A/C on. See what happens.

If it still has problems.

Air or water in the system. Both are harder to compress and take more power from the engine. How long did you pull vacuum on the system and at what temperature and what elevation?

Too much oil in the system, again takes more power to compress it.

Over charged, too much refrigerant. What are the gauge readings for the system? Low and Hi,

Did you replace the receiver dryer? What refrigerant? How many ounces? What oil? How many ounces? Was the system flushed before you refilled it?

 

[melloelky]

that looks like the kit from original air

 

[Jaxrwild]

Turn the idle speed screw on the throttle linkage up about 200 - 300 RPM and drive it with the A/C on. See what happens.

If it still has problems.

Air or water in the system. Both are harder to compress and take more power from the engine. How long did you pull vacuum on the system and at what temperature and what elevation?

Too much oil in the system, again takes more power to compress it.

Over charged, too much refrigerant. What are the gauge readings for the system? Low and Hi,

Did you replace the receiver dryer? What refrigerant? How many ounces? What oil? How many ounces? Was the system flushed before you refilled it?

I had all done by a AC professional so I hope he knew what he was doing

 

[Jaxrwild]

that looks like the kit from original air

Yes would never recommend them, they sent wrong parts and do not return phone calls, messages or emails. I started a dispute with the Credit card company