2nd Gen Non-Engine/Transmission cruise control

[ramman-mn]

yes i have 2002 ram and last week i turned the cruise control on at 65 and it started to go down to 60 and then come back real sow and it stoped a 64 and if i go 70 it would do the same thing but it would stop at 69 then please help what could be doing this any thing or ill have to take d. c. and be for this started it was working fine and now this

 

[bnbrown]

You might want to take a quick peek and make sure there arent any obvious vaccum leaks, if that were the problem I would imagine the HVAC would operate slow when changing air control modes. sometimes the vac lines crack or damaged.

 

[ramman-mn]

thanks that was it

 

[DirtyDodge]

Where was the leak? My cruise has not worked correct in about 3 years. Dealer guessed and quoted me 1k to fix. Decided to pass on their offer. I thought I found a leak under the drivers side battery, but that didn't fix it.

 

[ramman-mn]

hi

found the leak and replaced the vac line that goes across front of truck by the firer wall and in 2 years from know im going to replace all vac lines

 

[bnbrown]

Does the air control work normal? the selector for panel/defrost/floor & recirc is vac operated... if it is operating slow or not at all I would suspect vac problem... could also be the vac. pump itself, in which case it isnt too bad to rebuild yourself, just kind of a pain to R&R.
the lines get really brittle after not that long, had problems with them cracking when pushed out of the way.