New member with a question - Ranger-Forums - The Ultimate Ford Ranger Resource


Member Introductions New to Ranger-Forums.com? Please take a moment and introduce yourself.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 05-21-2011
Member
Thread Starter
 
Join Date: May 2011
Location: Denton, Texas
Posts: 10
New member with a question

I spent some time reading posts and searching for an answer to a question (see below). I liked what I read and decided to join. By way of introdution: I am the son of a retired mechanic and grew up with wrenches as play toys. Dad is now 90, a WWII veteran, married for 70 years (celebrated this week the 70th) and is still my main advisor on mechanical issues. His data base is lacking when it comes to anything computer related. I am a Vietnam veteran and after the service went to graduate school in chemistry. I'm in my 37th year as a univerity Professor of Chemistry.

The question that brought me to the forum is: On the drive (450 miles)back from visiting my parents, I noticed that my AC was cutting out. My Ranger is a 1997 XLT, 4 cylinder, 5 speed manual. I played with the controls and found the cutting out happened everytime I was driving up a long grade. Blower on high would cut off. Once a reached the peak of the grade and started down, blower would come back on. I switched the AC and in the vent position, I observed the same symptoms. Is this normal? If so, I assume there must be a vacuum activated cut out switch. This would make sense in the AC mode but why also in the vent mode.
Or, Is this a symptom of a problem?

I bought the truck new in 1998 and it has about 105k miles. I normally don't drive it on long trips but I don't recall seeing this behavior previously.
Reply With Quote
  #2  
Old 05-21-2011
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
At WOT (wide open throttle) the PCM will disengage the A/C compressor .
You may need to check the throttle position sensor.
Reply With Quote
  #3  
Old 05-21-2011
Member
Thread Starter
 
Join Date: May 2011
Location: Denton, Texas
Posts: 10
Thanks for the reply and I suspected there was a link to WOT and the compressor. I wasn't at WOT - highway speed was 60-70 mph and it seemed to only effect the blower as cool air was coming out. But the blower also cut off in the upper vent mode where I assume the compressor was off anyway.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
New member here. Question about my truck and a noise. Raezil General Ford Ranger Discussion 1 03-25-2015 11:22 AM
New Member but it's a Mazda......... Cruise Control question NorthGeorgia General Ford Ranger Discussion 4 10-24-2014 12:51 PM
New Member with a Question BClark Member Introductions 0 01-12-2014 05:08 PM
question from new member hipjak SOHC - 2.3L & 2.5L Lima Engines 11 03-08-2010 07:30 AM
new member question ranrail General Ford Ranger Discussion 2 12-30-2007 04:35 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 04:13 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.