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Old 05-10-2018, 08:58 AM   #1
Rich84
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Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,692
6.0 Swap Stumbling Idle

I have a 2004 Van 6.0 that I put in a 1986 longbed..Idles smooth until you rev the motor. As it decreases idle it stumbles as it idles down.
Exhaust is a little leaky it is just kind of patched together so I can get it to the exhaust shop.
It has 2 codes 135, and 155 for the o2 sensors. If I unplug the MAF it runs and idles perfectly.
Is this happening because of the small leaks in the exhaust? Vacuum leak?
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