Turning Off the car aircon, does it help in saving on fuel?

[spyghost]

nagtataka lang ako kasi kakaiba ang dagdag na load ng a/c ko sa makina in such a way na parang dadapa ang makina twing engage ang compressor although bago lahat ng engine supports. e.g. when i am running in 1st gear and the a/c engages, parang dadapa ang makina ko.

i've tried change oil, oil/fuel/air filter, tune up, change all belts. medyo nakakairita rin kasi lalo na pag hindi kabilisan ang takbo. ramdam na ramdam ito 0 - 40 kph

given this case, pwede ko masabi na me effect ang a/c sa gas consumption; however, i know for a fact that there is something wrong because of how it runs. what could be the problem?

[mbeige]

nagtataka lang ako kasi kakaiba ang dagdag na load ng a/c ko sa makina in such a way na parang dadapa ang makina twing engage ang compressor although bago lahat ng engine supports. e.g. when i am running in 1st gear and the a/c engages, parang dadapa ang makina ko.

i've tried change oil, oil/fuel/air filter, tune up, change all belts. medyo nakakairita rin kasi lalo na pag hindi kabilisan ang takbo. ramdam na ramdam ito 0 - 40 kph

given this case, pwede ko masabi na me effect ang a/c sa gas consumption; however, i know for a fact that there is something wrong because of how it runs. what could be the problem?

Three things.

May oil ba yung compressor sa loob? Has it been maintained properly?

Original R12 ba siya na converted to run R134a? If so compressor will need to run harder to provide the same cooling effect as R12. At tama ba pagkaka charge (not overfill/underfill)?

If older type of compressor then chances are yes malakas ang kain niya ng HP at tataas fuel consumption. Newer compressors mas efficient though still consumes more fuel, of course, when in use.

[spyghost]

yes, oil is enough. it is original 134 (not converted). 8 years narin ang aircon system (yr 2000). makukuha kaya ito sa linis? sa linis ba required na palitan ang dryer saka expansion valve?