Question about 2002 GMC Envoy

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Where is the power steering pressure switch on a 2002 envoy

The power steering pump works great when the engine runs above 2000 rpm. There has never been any evidence of cavitation or sounds coming from the pump. the resevoir is full and I have changed the hydraulic fluid in the system. Also the engine will stall at times and will run like its under a heavy load that will make the low oil pressure warnings appear. Any help or guidance

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 4 Answers

SOURCE: L Reg Vitara engine knock

if anything id say it was the bearing

Posted on Jul 06, 2008

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  • 22 Answers

SOURCE: Low power steering fluid

if the fluid is low it will cause the noise if it is low there is a leak and could have got air in system and cause noise and possibley cause damage to pump and gear box

Posted on Dec 11, 2008

roedmondson
  • 68 Answers

SOURCE: Where is the oil pressure sending unit on 2004 Dodge stratus

Most likely the oil pressure switch may be damaged. This is a simple procedure. Change and observe the results

Posted on Jan 23, 2009

honeymokey
  • 3113 Answers

SOURCE: 2002 Jetta 1.8T random oil pressure warnings

Replace oil pump and use the bigger filter that Vw tells you to. These 1.8's have some oiling problems due to the amount of oil they hold and they want you to use synthetic oil in them.

Posted on Apr 25, 2009

  • 82 Answers

SOURCE: 1995 gmc jimmy... heavy clunking and low kpa oil pressure

It sounds like you have fried your main bearings and possibly your valves .... (you've totalled your engine) You should NEVER EVER RUN YOUR ENGINE WITH LOW OIL PRESSURE .... UNfortunately, this engine is also prone to clogged oil return journals As I found out accelerating up a mile long grade ... with plenty of fresh oil and the radio was up fairly loud until I noticed the knocking and the guage as low as it could go ... Oil was al stuck up under the valve covers and returned into the oil pan and the dip stick .... after the truck was shut off for a few minutes ... but with a knocking motor!

Posted on May 01, 2009

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The whining noise you hear coming from the power steering pump is one of three things. The first is more of a loud "hush" than a whine; this is the sound of fluid rushing through the bypass valve when you turn the wheel all the way to one side or the other. Sometimes the bypass valve malfunctions or doesn't open all the way, causing pressure to back up in the pump and cause your engine rpm to drop. The second and third causes result from cavitation -- vacuum pockets created behind the rotor's vane blades as a result of extremely high pump action -- or air in the lines.

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1 Answer

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