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cel and bolts out the ass

4K views 2 replies 3 participants last post by  stokedcSRT4 
#1 ·
Lately since I've installed my new pcm.. I've been throwing lightning bolts. And the CEL P0121 code.. on the dyno yesterday.. it happened 3 times.. it would sit at 1500 rpms.. and tonight.. I got gas.. started up started driving towards the road. And bamm.. another lightning bolt and CEL P0121 code .. Idk wuts going on...

Maybe the new pcm is still learning?? I've had it on a week er 2 now.. so I would think it would be good. By now...

With ms1 the bolt happened maybe 3 times in the 1.5 yrs I had it..

Any tips?
 
#2 ·
P0121 Throttle Position Sensor/Switch A Circuit Range/Performance Problem

I Googled the code and came up with the above,so maybe it is just a throttle position sensor problem and nothing to do with your new PCM???I can't remember what the Lightning Bolt light is for but I thought it was also throttle related but I could be wrong.I'm not much help but maybe ask Aaron on the Realtune Vendor section about it.(I'm assuming that your new PCM is the MS1K Flash)
 
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