Question about 1998 Chevrolet Cavalier

1 Answer

I have a 1998 GMC Jimmy & there's no power going to my low pressure switch which is located on the accumulator. I ran a hot wire from the battery to the ac compressor, filled the system with 1.8lbs of freon & the low side pressure is exceeding over 60 psi. the system is not cooling & I can't get the system to cycle.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 335 Answers

Running a hot wire bypasses any compressor cycling. Low side should pull down to 20 psi or less when compressor is hot wired. If not pulling down you may have weak compressor or way to much freon in system.

Posted on Jul 14, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

No power to key ignition 1998 GMC Jimmy

Look for the inline fuse link in the red wire from the battery . It looks like something was spliced into the wire. It's the fuselink.

Jun 25, 2014 | 1998 GMC Jimmy

1 Answer

Wont turn over. Has power, everything comes on but when you turn ignition to start, it does nothing!

Check the fuses in the main fuse box under the hood. Look for a fuse marked starter or starter relay. The easiest way to get the a/c clutch to engage is to jump the connecter that goes to the low pressure switch, which is located close to the firewall on the larger diameter a/c line.

May 24, 2014 | 2000 GMC Jimmy

1 Answer

Ac clutch not kicking on

ADD Freon. It's a R134 system and the pressure is too low. Trust me add Freon and it will work fine. With a low amount of Freon if you jump the low pressure switch at the accumulator it will be very cold but will not have enough pressure to kick on the low pressure switch.

Jul 22, 2012 | 1991 GMC K2500

2 Answers

No fuel delivery to eng., no voltage spurratic

Oil pressure switch activates the supply pump. Replace the oil pressure switch.. New & Need good rating please.

Jul 31, 2010 | 1998 GMC Jimmy

1 Answer

Low pressure knob for gmc jimmy 2001

It is on the accumulator. Passenger side near the air box. The silver can.

Apr 21, 2010 | 2000 GMC Jimmy

1 Answer


have the a/c recharged first to make sure the system is full if the compresser will not come on jump the wires on to low pressure switch located on the dryer if the a/c works after that replace rhat switch

Jul 18, 2009 | 1998 GMC Jimmy

2 Answers

I have an 1998 GMC jimmy 4.3 motor .my air conditioner quit working so I thought it needed charging .but once I hooked of the canister to refill the aircon I seen the compressor was not turning .so I...

There should be a low pressure switch located on one of the metal a/c lines. It probably has 2 wires. Sometimes it is necessary to 'jump' across this switch to complete the circuit to the compressor until it starts to accept freon and build pressure. This is a safty feature designed to prevent the compressor from locking up due to the absence of oil, which is carried by the freon. Good luck. Dave

Jul 13, 2009 | 1998 GMC Jimmy

3 Answers

Cannot locate where the a/c clutch cycle switch is... there is no power in the wires to the clutch and fuses are okay.

The a/c clutch is attached to the front of your a/c compressor. It is the part that your serpentine belt runs on. It is either engaged or not based on the demand of the a/c system. It will not run if it senses low pressure in the freon supply line so you might try having the system checked for proper fill before replacing the clutch.

May 29, 2009 | 1996 GMC Jimmy

1 Answer

Ignition fuse blows every time

Please replace the fuse with a higher rated fuse like 50 to 100 amp.

Take care.

Please rate this fixya.

Apr 10, 2009 | 1998 GMC Jimmy

Not finding what you are looking for?
1998 Chevrolet Cavalier Logo

198 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8270 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides