DzienManche Posted May 25, 2023 Share Posted May 25, 2023 In my 2.8L ‘86 Comanche I have what appear to be two soup can looking things on the left of the engine with tubes coming out of them. I looked a few different places and can’t find anything on them. Any one help a brother out with an explanation on these?tucked under other hoses and tubing but there are two of them. Link to comment Share on other sites More sharing options...
eaglescout526 Posted May 25, 2023 Share Posted May 25, 2023 Theyre GM vacuum reservoir cans. AMC used them from 84-86 and GM used them until they were obsolete. So all theyre doing is providing vacuum to the fuel vapor system and your HVAC duct controls. Link to comment Share on other sites More sharing options...
DzienManche Posted May 25, 2023 Author Share Posted May 25, 2023 2 minutes ago, eaglescout526 said: Theyre GM vacuum reservoir cans. AMC used them from 84-86 and GM used them until they were obsolete. So all theyre doing is providing vacuum to the fuel vapor system and your HVAC duct controls. Oh sweet deal. Thanks for the info! Link to comment Share on other sites More sharing options...
eaglescout526 Posted May 25, 2023 Share Posted May 25, 2023 No problem. They also are used for cruise control, which isnt installed. Link to comment Share on other sites More sharing options...
DzienManche Posted May 25, 2023 Author Share Posted May 25, 2023 Just now, eaglescout526 said: No problem. They also are used for cruise control, which isnt installed. I have cruise control on my rig. Link to comment Share on other sites More sharing options...
eaglescout526 Posted May 25, 2023 Share Posted May 25, 2023 Really? I don't see the servo. Link to comment Share on other sites More sharing options...
DzienManche Posted May 25, 2023 Author Share Posted May 25, 2023 1 minute ago, eaglescout526 said: Really? I don't see the servo. Not sure where that would be, but the original sticker included it under the XLS options that came with it. I was the computer and switches on my indicator lever too Link to comment Share on other sites More sharing options...
DzienManche Posted May 25, 2023 Author Share Posted May 25, 2023 2 minutes ago, DzienManche said: Not sure where that would be, but the original sticker included it under the XLS options that came with it. I was the computer and switches on my indicator lever too I’ll take a look again tomorrow, this is an older picture before I cleaned up the engine bay. Will be easier to see now Link to comment Share on other sites More sharing options...
eaglescout526 Posted May 25, 2023 Share Posted May 25, 2023 It would be on the passenger side of the engine bay. Link to comment Share on other sites More sharing options...
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