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How do you jump out compressor relay on 001 impala

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Compressor will not engage on 2001 Impala? Where is low pressure switch located on 2001 Impala


It is located by the accumulator or dryer , a long canister shaped part, that will

have a pressure switch attached to it, and a two wire molex, if there is freon pressure

in the cannistor, the switch will close and send voltage to engage the clutch on

the compressor, if there is no voltage there the clutch will not work and you may

have a blown fuse or bad switch on your dashboard. i would check for voltage

at the pressure switch 1st, if its there, pull the molex off , jump it out and see if

the clutch engages. if you have power and you jump out the molex and the

clutch does not engage, you could have a bad clutch or bad compressor.

if it does engage, just replace the pressure switch, if you do replace it, make

sure to lube the seal with pag oil. good luck!

Jun 28, 2011 | 2001 Chevrolet Impala

1 Answer

If I strap terminal 3 to 5 on the compressor relay the compressor comes on. What controls the compressor relay?


THE LOW PRESSURE SWITCH
SYSTEM IS PROBABLY LOW IN FREON
TO CONFIRM LOCATE LOW PRESSURE SWITCH AND JUMP
THE TWO PINS IF COMMPRESOR ENGAGES THR SYSTEM IS LOW
DONT LEAVE IT JUMP YOU WILL BLOW UP COMPRESSOR
NEEDS FREON TO CARRY COMRESSOR OIL TRUE OUT SYSTEM

May 07, 2011 | Chevrolet Lumina Cars & Trucks

2 Answers

A/c compressor clutch will not engage


In this case, I would suggest that the low freon pressure switch has activated and prevents the compressor from running and damaging your system in your 15 year old vehicle. To prove this, find the switch and short the switch out and see if the compressor kicks on.

How do you fix this? Get the system recharged. Also have the mechanic check for leaks. The freon escapes somehow ...

Thanks for your question today.

Mar 03, 2011 | 1996 Cadillac DeVille

1 Answer

I have a 2006 impala that is blowing the 10 amp fuse to the ac/compressor/a new will last 15 min to an hour or blow right away. can you give me a place to start looking. i dont think the fuse feeds...


CHECK THE PSI IN THE SYSTEM IF ITS READING MORE THAN 40 PSI OF 134A SOMEONE OVER CHARGED SYSTEM,(CAN BLOW COMPRESSOR) IF THE PSI IS WITHIN PARAMETERS PUT A NEW RELAY IN IF ITS A STANDERT 5 PROG 12V RELAY THE OEE# IS MOST LIKELY ER13 ONCE THE PSI AND RELAY HAVE BEEN CHECKED IF THE FUSE STILL POPS....ITS A SHORT WHICH IS A NIGHTMARE FOR ANY CLASS A MECHANIC....FIND A ELECTRICAL SKIMATIC AND CALL AN AMRATURE PRO....

Sep 12, 2010 | 2006 Chevrolet Impala

2 Answers

AC Compressor not engaging on 2000 Chevy Impala. Fuses and AC relay okay. No power at compressor. Need wiring diagram. Also need to know if compressor requires 12v for operation. If not what should voltage...


When your R-134a runs too low it will NOT engage the compressor. You need to refill your a/c system before the clutch will engage, I also suggest finding the leak.

Apr 20, 2010 | 2000 Chevrolet Impala

1 Answer

I have a 2004 Chevy Impala it has poer at the fuel pump fuse and fuse looks good but no power at fuel pump. is there a fuel pump relay switch or what could it be?


First make a set of jumper wires and jump the pump from the battery and see if it works. If it runs its the relay or the ECU,or the ignition switch.
Remove the relay and test it for B+. Then jump the terminals and see if the pump runs. If pump runs and you got B+ up to this point its the relay.
However,if no B+ at the relay means ECU not giving relay the turn on signal..
While wearing a ground wrist strap check out ECU Grounds and B+ wires for continuity from Ignition switch and other areas of interest (use shop manual)
either the switch is not telling ecu to send message to relay to turn on the pump or someone in this circuit has gone bad.

Mar 24, 2010 | 2004 Chevrolet Impala

1 Answer

Secondary fan on impala SS 1996 not operating. fan motor works, new sending unit, new relay installed What else could keep it from coming on?


The PCM controls these fans via certain sensor inputs, ( CTS ) and switches ( A/C compressor for instance ). When relays are removed, both relays sockets should show 12v constant ( battery voltage on "switch side" ). When the key is rolled on, there should be 12v appear in two more places, ("Coil side" ) the relays are then operated by a ground signal from the PCM. ( Powertrain Control Module ) You need a scan-tool to check for fan request, by the PCM. A/C compressor request, etc. If you have any DTC's then repairing them may well fix your problem, otherwise, you may have a faulty PCM.

Oct 22, 2009 | 1996 Chevrolet Impala SS

2 Answers

1996 lincoln towncar. No a/c compressor engagement unless jumped


the control unit is no good.i had a similar situation with a 98 tracker,and installed a switch to give it a ground for the compressor relay that comes from the a/c computer module.
it works good and goes on and off with the a/c switch.

Jul 18, 2009 | Lincoln Town Car Cars & Trucks

1 Answer

No voltage to AC compressor after jump start 93 G20 van


the main fuse box under the hood is where those relays can be found.

Jul 06, 2009 | 1993 Chevrolet G20

1 Answer

Ac new and ran for 4 months then stoped.


Try checking the spacing of the clutch of the compressor to your A/C...chances are the gap is too large and will not pull down to engage the compressor. That should eliminate the jump wire and keep your car snowing. No clutch to engage the compressor, no A/C.

Apr 19, 2009 | 1999 Chevrolet Lumina

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