98 sle ac problem

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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jnorton32
LE Member
Posts: 1
Joined: Mon Jun 27, 2011 8:09 pm
Year and Trim: 1998 pontiac bonneville sle

98 sle ac problem

Post by jnorton32 »

i have a 1998 pontiac bonneville sle.i have the digital climate control.when i turn the ac or heat on the compressor or the blower motor doesnt come on.ive checked all fuses (except relays,dont know there location)and all are good.my cooling fans also work.whats going on?
pappyl
SLE Member
SLE Member
Posts: 50
Joined: Wed May 28, 2008 12:17 pm
Year and Trim: 1995 Pontiac Bonneville SSEi

Re: 98 sle ac problem

Post by pappyl »

May want to search for similar posts - even the most recent ones on the page.
You have a low pressure switch and a high pressure switch.
Usually you are low on r134 and the system deactivates to protect the compressor.

The aftermarket kits (if you are in Canada) are Duracool and RedTek, both HC based and both work well. They come with a basic gauge, plug in the LOW pressure side (schrader valve). Anyone disagree with that statement suggest you do some research.

If you compressor wont kick on but pressure is good - start at the compressor connector, see if it is coming in at 12v with AC ON. Juice at the compressor means clutch problem. If not, could be relay or fuse. (both on the firewall/engine side)

Does your cruise control work?
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