Orrin Report post Posted August 5, 2021 I need to replace the vacuum pump on my 2002 HR Ambassador. I think I have found a replacement for Vueriks in Grand Rapids, MI. I can't find mine and looking at starting to take stuff apart. Do any of you know where it is located? The line is missing so I can't trace it. Thanks Orrin and Linda Share this post Link to post Share on other sites
wildebill308 Report post Posted August 5, 2021 40 minutes ago, Orrin said: I need to replace the vacuum pump on my 2002 HR Ambassador. What does it power? Bill Share this post Link to post Share on other sites
hermanmullins Report post Posted August 5, 2021 Most likely only the dash air vents. (I guess). Herman Share this post Link to post Share on other sites
manholt Report post Posted August 5, 2021 Orrin, I just goggled it...not cheap. A/C or Heater or both a kit is $303 to $707, whole unit is up to $2000+! Herman, your correct. Share this post Link to post Share on other sites
jleamont Report post Posted August 5, 2021 Normally they are up front near the air filter housing. They look like this (in most RV applications) https://www.amazon.com/Dorman-904-214-Electrical-Vacuum-Select/dp/B001KQF6PC/ref=asc_df_B001KQF6PC/?tag=hyprod-20&linkCode=df0&hvadid=312462950315&hvpos=&hvnetw=g&hvrand=12688683149966818756&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9007361&hvtargid=pla-493903279818&psc=1&tag=&ref=&adgrpid=70635887228&hvpone=&hvptwo=&hvadid=312462950315&hvpos=&hvnetw=g&hvrand=12688683149966818756&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9007361&hvtargid=pla-493903279818 Share this post Link to post Share on other sites
Orrin Report post Posted August 5, 2021 Thanks everyone. Yes it does power the blend air doors in the chassis a/c unit. I am trying to find out where it is located in MC before I start taking things apart. Share this post Link to post Share on other sites
jleamont Report post Posted August 5, 2021 56 minutes ago, Orrin said: Thanks everyone. Yes it does power the blend air doors in the chassis a/c unit. I am trying to find out where it is located in MC before I start taking things apart. Very common point of failure. If it turns on take a line off of it and see if you can stick your finger to the port (suction). I’ve heard them run but not pull vacuum before, don’t get fooled. Share this post Link to post Share on other sites
Orrin Report post Posted August 6, 2021 My mechanic is great. He informed me that my vacuum pump is a venturi operated of the air system and triggered by a solenoid whose fuse was blown. Took him an hour to find it but just a fuse. That I was not expecting. Share this post Link to post Share on other sites
wildebill308 Report post Posted August 6, 2021 Well that's good news. Bill Share this post Link to post Share on other sites
dons2346 Report post Posted August 6, 2021 Better buy that mechanic a beer! Share this post Link to post Share on other sites
manholt Report post Posted August 6, 2021 I deal by the case! 🤣 Don, congrats (I think) on your re appointment/election! Share this post Link to post Share on other sites
Orrin Report post Posted August 17, 2021 I bought him a bottle of good Scotch. He will be finishing up the installation of the a/c condenser this week. We could not find the original condenser so ordered something similar and he is fabricating new mountings for it. Good tech, since he does not particularly like working on motor homes, I am not going to share his name and address at his request. Share this post Link to post Share on other sites
