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cruise control light comes on but doesnt work

00 eclipse GT
Yes ive read threw forum with not with this case
Cruise control worked fine before started working on engine for valve cover gaskets.
now doesnt really work not sure whats going on

Back story replaced valve cover gaskets and other parts as ive done 100 times before with no issue.and always worked just fine

cruise light comes on
during speed set it acts like it wants to but doesnt
it will hold and slowly decline
accelerate and resume is almost none existent
gone threw everything to be sure i didnt miss anything but this has me stumped .

Yes vacuum lines are plugged in --even replaced with new ones to be sure

bought some used parts to try track it down
replaced CC module behind radio
replaced steering switch
replaced vacuum pump .. even bench tested it ..not sure how much Vac is suppose to be drawing during operation however does work
brake lights work even replaced bulbs as well

not sure if a brake light switch can cause issues even if its working
or a TPS .


perhaps some one can assist on this issue im at dead ends
 

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This is what I'm looking to purchase.

Listed as: 00-05 Mitsubishi Eclipse OEM Vacuum Pump Solenoid G6T50371ZC Stock 3g Cruise 03
call the dealer for a part number should be able to Google it after
00 eclipse GT
Yes ive read threw forum with not with this case
Cruise control worked fine before started working on engine for valve cover gaskets.
now doesnt really work not sure whats going on

Back story replaced valve cover gaskets and other parts as ive done 100 times before with no issue.and always worked just fine

cruise light comes on
during speed set it acts like it wants to but doesnt
it will hold and slowly decline
accelerate and resume is almost none existent
gone threw everything to be sure i didnt miss anything but this has me stumped .

Yes vacuum lines are plugged in --even replaced with new ones to be sure

bought some used parts to try track it down
replaced CC module behind radio
replaced steering switch
replaced vacuum pump .. even bench tested it ..not sure how much Vac is suppose to be drawing during operation however does work
brake lights work even replaced bulbs as well

not sure if a brake light switch can cause issues even if its working
or a TPS .


perhaps some one can assist on this issue im at dead ends
Probably would be best to make a new post instead of bumping a completely different issue that the op was having
 

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Just called, MR309795 is the stock part number but G6T50371ZC is listed online and on ebay as the 00-05 vaccum pump.... So I'm assuming its just an aftermarket version... Can anyone confirm.

I'm just tryna make sure this thing is the correct part.
 

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is your third brake light working?
or are you using an led light for the third brake light.
either of these will cause the cruise control not to set.
I think its funny how everyone on here blew your response off and acted like you were joking but you are correct and taking the led out of my 3rd brake light got my cruise control working again. Thanks.
 
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