surge

[Tom Kuznicki]

I have a problem with our Marauder that I can't quite figure out. 03 no power adders except for K+N filter and tune. recently, at part throttle low speed cruise there is a surging type miss, any idea's?:help:

[Black_Noise]

Whos tune is it... I have a lidio tune on an XCAL3 and I believe that the tune and the 02 sensor loop (something with programing) that other will say is the problem are what you are feeling.

Mine only does it before warmed up to normal temp, and at in gear idle up to 50% or so throttle.

[Blk Mamba]

there have been quite a few threads on this lately, mine finely threw an egr code, I replaced it, that was about half the problem, I think COP's is the rest.

[Glockafella]

CLEAN your MAF!!! Sometimes the oil from a K&N type filter will gunk it up a bit...I had this happen to me with my old Ford Truck...

[Tom Kuznicki]

Thanks guys, the MAF is clean, the only thing I found out of whack is the IAC, when I loosened the bolts it just fell off, no seal between it and the gasket. Will try it out since repair and let everyone know if this was the cause.

[Blk Mamba]

As I have stated in other threads, I changed out the cop's today, and my problem is gone.

[Glockafella]

Ya know mine surges, but different kind of surge...When I start mine it makes a 4 inch lunge forward, took the tune off, and it went away...I think it might be the tranny pressure difference?? I have no idea really