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DelSol blows cold, cool, warm.

MilesToEmpty on Mon August 08, 2011 9:17 AM User is offline

Year: 1993
Make: Honda
Model: DelSol Si
Engine Size: 1.6
Refrigerant Type: R12
Country of Origin: United States

I purchased a new to me 93 Del Sol Si. Picked it up for $200 back in December. Bugger gets twice the mpg as my STI.

Anyway, when I turn the AC on it does the normal. You hear everything kick on and what not, and after a minute its blowing ice cold.

When you switch the AC on and the engine is warm, the rpm's will increase from around 500-800.

After a few minutes or so, driving, sitting, doesnt really matter... the air will get "luke cool" and almost have a mild dampness to it.

Two or three minutes like that, and if you kick the ac off, the rpms sit where they should. Once you kick it back on, they will go up to 1000ish. I assume this is the car trying to compensate for the load teh compressor would normall be applying but isnt. Could act like this for 10 minutes or half an hour.

Now after its done this 4-5 times, or maybe 8-9; itll get cold, and stay cold. And youll feel it warm up for maybe 1-2 minutes here and there then start cooling again.

I know Honda makes a kit, 38020-SM4-A1AH, that your just supposed to hook up and use and be good for new 134.

Just trying to figure out an approach on what to do first.

mk378 on Mon August 08, 2011 11:19 AM User is offline

Is compressor engaging when it is not cooling? If not, probably clutch gap. You can adjust that and keep the R-12.

MilesToEmpty on Mon August 08, 2011 11:48 AM User is offline

Im not sure, Ive always been driving the car when it does it.

Is there somewhere I can read up on adjusting the clutch gap?

Edited: Mon August 08, 2011 at 11:49 AM by MilesToEmpty

bohica2xo on Mon August 08, 2011 1:47 PM User is offline

The clutch gap is adjusted by removing shims. The plate is held on with a nut in the center on the end of the shaft. Here is a link to a ford, it is similar:

Ford compressor clutch adjustment

If you search the site you will find many threads on clutch adjustment. Pretty easy job.


"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

JJM on Mon August 08, 2011 10:07 PM User is offline

Do keep this vehicle R-12. Most Honda owners end up regretting converting to R-134a with the poor performance, given the R-12 systems were marginal to begin with. The Honda kit won't be much better than most of the kits out there since it doesn't come with gauges, a vacuum pump, paralell flow condenser, higher capacity fan... and so forth needed for a proper retrofit.

When the air gets warm, check to see if the compressor clutch is engaged... sounds like it's disengaging.


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