Engine Power Is Reduced - Ongoing Issue, Updates throughout thread.

[Mighty Hd]

I am between Tampa and Orlando.

 

[swathdiver]

I was having trouble with bad batteries every 6 to 12 months. Once I disconnected the whole monitor on the negative battery cable that problem on the way and has been fine for years.

You might consider plugging that back in and using a battery tender. Almost seems like the car was struck by lightning. The wiring and grounds are good but the modules/computers are all going bad it seems.

There are a few guys on here out your way, some in Plant City, Davenport, Haines City and Sugarloaf Mountain.

 

[Mighty Hd]

I have been using a battery tender off and on without incident.

We haven’t had any thunderstorms in this area for weeks; This all started when we were driving to GA the week of Christmas. We made a quick stop in Folkston and then it wouldn’t restart. It was raining, no lightning…..

I got it going again and made it to the local Advance to clear the codes; afterwards we cut our trip short and made a bee-line back home.

I swapped the fuel pump (low PSI) and the control module. It was fine for about a week and now suddenly going into reduced power mode.

Yesterday it went into limp mode with no codes after I cleared the initial 6000 that showed up.

 

[Fless]

Why not pull the battery and take it to have tested as @swathdiver suggested?

 

[Doubeleive]

with that many codes I would have to guess there is a short in the lan buss or a module is bad or going bad works until it gets warmed up then shorts out.
it's probably going to take a deeper diagnostic to figure out. meaning like testing on the lan buss with a scope and that takes a certain skill set.
just my .02

 

[Mighty Hd]

Why not pull the battery and take it to have tested as @swathdiver suggested?

I did that last week. I have an analyzer at home and also took it to advance auto. no issues found.

 

[Mighty Hd]

with that many codes I would have to guess there is a short in the lan buss or a module is bad or going bad works until it gets warmed up then shorts out.
it's probably going to take a deeper diagnostic to figure out. meaning like testing on the lan buss with a scope and that takes a certain skill set.
just my .02

I’m out for a drive now. Drove it long enough to get it out of closed loop. Stopped for lunch and we’ll see

Noticed the idle is a bIt erratic. TB was cleaned yesterday and I did a release as well.

 

[Mighty Hd]

Just got back in the vehicle. 45min heat soak.
No codes
Reduced engine power.
Shut it off, restart and it goes away.

 

[Mighty Hd]

Ha. Get back in it after another stop at a local store and no reduced power message.

So now it’s apparently intermittent. Electrical problems are typically the death sentence of a good vehicle.

 

[Doubeleive]

Maybe check the fuse box, pull it off and see if there is any corroded pins.