PCM tune ?
05-29-2013, 05:53 PM
#1
On The Tree
Thread Starter
iTrader: (9)
Join Date: Sep 2011
Location: Shreveport la
Posts: 183
Likes: 0
Received 0 Likes
on
0 Posts
PCM tune ? Did a full rebuild and did a cam install and other supporting mods. When I did a first start. I got the " reduced engine power " message. Ppl said a tune would fix that
05-29-2013, 06:55 PM
#3
9 Second Club
iTrader: (2)
Join Date: Jul 2002
Location: on the dyno tuning in MD
Posts: 2,583
Likes: 0
Received 1 Like
on
1 Post
What do you mean when you did a first start? just starting the engine up gave you the message? Yes, a tune is needed to prevent going into reduced power mode, but it shouldn't come in just starting it up...
05-29-2013, 08:55 PM
#5
On The Tree
Thread Starter
iTrader: (9)
Join Date: Sep 2011
Location: Shreveport la
Posts: 183
Likes: 0
Received 0 Likes
on
0 Posts
I started the vehicle for the first after the rebuild. It said in my message center reduced engine power.. And I won't even idle at all. Can't even get the rpms up past 2 grand I have video I can post
Trending Topics
05-30-2013, 09:53 PM
#9
On The Tree
Thread Starter
iTrader: (9)
Join Date: Sep 2011
Location: Shreveport la
Posts: 183
Likes: 0
Received 0 Likes
on
0 Posts
I got the MAF on. Started the engine no reduced engine powe light but once the motor warmed up reduced engine light came on it it idled at 500rpms and stayed after mild revs
06-04-2013, 04:26 PM
#16
Sounds like the pcm is trying to make it idle setting off the IAC code. I just looked through a few random DBW 5.3's I tuned and all of them still had P0507 settings left stock. I havent had that code pop up before but I also never tried running one untuned.
06-04-2013, 07:41 PM
#18
9 Second Club
iTrader: (2)
Join Date: Jul 2002
Location: on the dyno tuning in MD
Posts: 2,583
Likes: 0
Received 1 Like
on
1 Post
DBW doesn't have an IAC - it opens the blade vice haveing an IAC motor... that is a generic diagnostic readout. I would say a tune to get it to idle properly should get rid of your issue. Like LSX power tuning said, I've never even started one up with a cam and no tuning - I always do a base tune to get started - so I can't say I've ever seen this exact problem...
