Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Hi Im david, it wouls seem to me that maybe the lowpressure switch is intermittently operating. it could be a numbe of things, but i would concentrate on that first
no its not 40.00 a question...lol, give me a few and i will let you know where it is
you can put a jumper wire in the connector to see if the vehicles ac stays on/cold. or the proper way to do it is to hook up ac manifold gauges and with the ac on, see what psi the ac cycles at on the low side... should be around 30-40....high pressure side should cycle around 280-300
Have you tried anything that I suggested?
feel better......keep me posted
you didnt still have the jumper in the low pressure connector did you?
ok.well we gots a problem....gimme a few
what do the gauges read with the car shut off and the valves closed?
that low side is crazy. now if it were to stop at 120 being the outside temp is 100 then id say thats ok. there is actually supposed to be some kind of retard built into that gauge to keep it from passing 120
open up the valves on the pressure ports
sorry ...car shutoff with the valves at the ports open.
I have 38 ratings. ive been a mechanic for 32 years. but ive only been on here for 2 weeks
if thats with the car not running and the valves at the service ports open. then you have a low charge and need refrigerant.
those gauges should be reading very close to the outside air temp. both of them
i will send you the process. give me a sec
depending on the outside air temp you want to charge the system to when the low side shuts off at half the outside air temp. for example if the temp is 80 then the low side would cylcle off around 40. and the high side would kick off about double the outside temp around 160... then you know you have a good charge. before you do all that see what they arte cycling at now. dont forget to have the car running and ac on max for all of the above steps
everything looks good...is it cooling good?
wow. that aint right...let me look into that
ok. the next time you start the car. turn the ac on. if it doesnt start cooling right away, open the hood and see if the compressor clutch is turning. if not then smack it with a wrench or something and see it if starts to turn. it may be a sticking clutch or the air gap might be just a tad far.