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HELP 3.0 to 4.0 swap think engine is in limp mode


kiragyu

New Member
Joined
Dec 4, 2009
Messages
224
Reaction score
0
Points
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Location
great white north but lower then canada
Vehicle Year
1998
Make / Model
mazda
Engine Size
3.0V6
Transmission
Automatic
ok guys i did a swap from a 98 3.0 to a 07 4.0 kept the old exhaust well it was hooked up truck revs to 3000rpm but then when you put it in drive it revs fine till you get to 1500rpm then bogs and almost cuts out. i think it is in a limp mode because one of the old o2 sensors doesnt show anything at all and one is just REALLY lazy in switching back and forth. could the 07 computer be in limp mode because its not getting the right data? PLEASE HELP!! ASAP anything you can think of please dont hesitate to post
 



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