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Doug, ASE Certified Technician
Category: Mitsubishi
Satisfied Customers: 8622
Experience:  Mitsubishi employed and Factory trained ASE certified technician
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My 03 eclipse runs like its dragging my 3/4 ton dodge behind

Customer Question

my 03 eclipse runs like its dragging my 3/4 ton dodge behind it. warms up and wont stay running boge down sputters and quits coming ti=o a stop will not go above 30mph long story short after 7000. 00 RIP OFF MECHANIC, 2 TRANSMISSIONS, MOTOR SWAPS NOW HAS A 2002 3.0 LITER V 6 I think my vacuum lines are messed up or shot where can I find a vacuum routing diagram
Submitted: 2 years ago.
Category: Mitsubishi
Expert:  Doug replied 2 years ago.


I am attaching both vacuum diagrams for the V6; there are two configurations on this year depending on if you have the VIC variable intake control plenum or not (upper plenum is three pieces instead of one).
You can also use the vacuum diagram on the under side of the hood if the hood is original.

If the vacuum hoses look OK, I would be most concerned about the timing belt having slipped a tooth or two which will cause major power loss, or the catalysts (There are three total) potentially having a clog in one or more of them.