ECMlink Another new to SD help thread. 2g

[97eclipsespyder]

Just set it at the highest. Hopefully you won't ever have to worry about running at 9v

Haha right. I didn't think it would be that high. It kinda shocked me an made me second guess my self.

Sorry for all the questions but I really appreciate the help!

 

[AWD-Tony]

Haha right. I didn't think it would be that high. It kinda shocked me an made me second guess my self.

Sorry for all the questions but I really appreciate the help!

No worries man. Better to ask than guess

 

[1990TSIAWDTALON]

When my Chevy IROC toasted its alternator, I was coming home at night and at 9 volts is about where the injectors STOPPED. I had my dad bring me a hot battery and drove her home but I'd be surprised if it ran at all at 9v.

 

[AWD-Tony]

I drove home about 45 minutes on 10.x volts. Stopped at a gas station close to home and car wouldn’t start (no crank). Called my neighbor, got a jump and drove it home. Looked over the log and that’s when I noticed the low voltage. It drove great the entire time on 10 volts .

 

[1990TSIAWDTALON]

Man, I would have been sweating it the whole time after my GM low voltage experience.

 

[AWD-Tony]

Man, I would have been sweating it the whole time after my GM low voltage experience.

My jeep did the same thing. Fing voltage regulator IN THE ECU . Had to add an external voltage regulator.

 

[1990TSIAWDTALON]

IN the ECU.....horrible place to put a voltage regulator, jeeze.

 

[97eclipsespyder]

Alright guys little update.

Think I may have found the source of the issue. I did more researching and found a SD trouble shooting video on YouTube. In the video it showed to allow maf compensation with SD and to increase the higher frequency around where you're going lean to see if it is a mechanical issue or a tune issue. I increase it by 40% with no change.

So I decided to look at my fuel pump o-ring cause after looking at my previous logs over the past year or so I noticed about 6 months ago my inj duty jumped from 80% to 105% with my pte 1000cc injectors. Sure enough my pump had shifted an it allowed the o-ring to blow out on one side. So I figured while I'm in there I'll upgrade.

So I ordered a 450 high pressure pump an 6an feed line from tank to filter. I installed the pump and drilled the siphon to 1/8". Just waiting for the hose to come in tomorrow. I'll check back in later this weekend after it's installed and close this thread out.

Thanks for all the help with the tuning advice guys I really appreciate it!

 

[AWD-Tony]

That makes sense. Good job figuring it out

 

[97eclipsespyder]

Ok guys. Just to verify is anyone else ever has this issue, we are good now. As suspected it was the oring and fuel pump causing all of my problems. An my ve table look tons better with no more leaning out. No more major surging at idle. I used your tips an it looks good just a little more fine tuning an I'm good