Limp mode???? (1 Viewer)

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Joined
Nov 12, 2018
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Golden,co
Morning. My 05 Gx470 was having major issues holding idle after start yesterday. Temp outside was less than 20F. I could not accelerate over 1200 rpm and there was a dead spot until about 3000. Rpm. It felt like it was in limp mode. Once warmed up worked perfectly. I just recently put the secondary air bypass kit in and it has been working perfect until this issue. Please help.
Fr8dawg98
 
could be Limp mode. 2003 had a firmware bug in ECU that kicks in when you hit a 45 deg temp diff between coolant temp, and outside air.

Can try disconnecting the air temp sensor, mine was supposed to be on the radiator, most are on the cold air intake. Don't know how it will affect running at your altitude tho...

Redo the "readiness monitor drive pattern", there is a link in the 80 faq.
 

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