Made good progress last weekend and yesterday (Veteran's Day). Got a minimum amount of wiring in Saturday afternoon to do a first start. Pushed the start button...nothing. Oh yeah, I forgot the ignition switch. Pushed it again, vroom! Once I plugged the vacuum nipples that were open, nice purr from the engine.

My friend spent some time TIG welding the exhaust, but didn't have time to finish connecting and hanging. So I ruined all his nice work with some straps and cheap exhaust connectors.



Got the fuel lines run. I re-used what came with the car, but I need to cut a few new ones. Found out the fuel cell works. I will probable replace the corvette filter with a real regulator at some point.




On my last car, the fuse box was on the firewall under the dash. Always a pain when you blow a fuse or need to quickly add something. This time it is going to be easily accessible.



Everything will be wrapped and labled.


At this point I have a running engine and brake lights. Still need to put in a couple gauges or figure out a racecapture dash, bleed the brakes and clutch, install sway bar, align it, put the front bumper on, plug a couple holes, and go!

Other things that can be done after a test day:
-ABS wiring
-ABS sensor mount fabrication
-Full dash
-Wipers
-Fire bottle

Going to try and do a test day at Chuckwalla 11/22. Race at Sonoma with 24 HoL 12/13.

 

Damn dude you work quick. Glad to hear the thing's up and running! I'm sure you'll be be able to get the rest done in time for Chuck. Gonna need a track condition report once you're back. I'll be out there the weekend after. Excited to see what kind of times your car runs out there!

 

I have not been there yet. Will be nice to see another track.

I don't work as quick as you.

 

Ugh. I have some sort of problem with the accelerator pedal and maybe a mismatch with the e67 ECM. I got the ECM from a local person who also built the harness. He loaded a tune from the previous owner of the car. Accelerator pedal is from a Cadillac CTS as suggested in the Ecotec Miata how to. Car starts up and idles fine, but when I give more than 25% throttle, the ECM goes into dead pedal mode, where the accelerator pedal no longer functions. I have to cycle power or remove the codes before the throttle works again. I see codes P0606, , P2122, and P2127.

I ordered a HP Tuners dongle and an '06 HHR accelerator pedal. OBD2 scan tool ECM thinks it is from a '06 HHR, but I don't know if the tune brought that info, or if that is hardcoded into the ECM. I also ordered Not looking forward to spending lots of $ with HP Tuners if I need to swap ECMs. I did pull a few from the junkyard a while back. I really did not want to get into programming ECMs but I guess I will have to figure that out.

I am also trying to figure out the CAN IDs for dash

 

Are you able to access and pull up PID data from a scan tool with your current setup? I'd do a quick check if possible and see if the ECU is receiving signals from both APP sensors. Being that the system doesn't get angry until you give it over 25% throttle, it does sound like a pedal/ECU mismatch problem, but can't hurt to check that your harness doesn't have an open on one of the circuits.

I can't remember, are you running a full GM harness or a custom one? I'd imagine the APP pinout is the same across most or all of the 4-banger GM models, but on certain Fords in the same year range, the pinouts will sometimes be different (I.E. F150 and Expedition DBW/APP pinouts for the same generation may not match).

 

Thanks for the reply.

The scan tool can see PID data for both channels, but it doesn't start at zero and they dont seem to see the same thing. I am running a standalone harness that was made by someone who only makes GM harnesses.

 

Typically you're reading the pedal PIDs in voltage. So you should read 0.5-1.5v and minimum, and 3.5-4.5v at maximum. Some pedals read backwards, so one sensor goes up in voltage while the other goes down and vise versa.

 

Measured voltage at both APP sensors in the accelerator pedal. CTS pedal APP1 (zero to WOT) ~0.46-2.05v, APP2 ~.97-4.14v
I had more ECMs that I scavenged at the junkyard.

-2006 "tuned" HHR 2.4 fails at about 30% throttle.
-2006 JY HHR 2.4 works with full throttle
-2007 JY ION 2.2 works with full throttle

I didn't actually start the car with the JY ECMs.

So I guess the tuned ECM must have had its APP tables overwritten for a different kind of pedal maybe? From what I read, HP Tuners cannot access those tables. I bought a HP Tuners dongle, need to figure out if I just delete VATS off the JY HHR ECM and send it, or do I need to modify more stuff. I am still trying to figure out the credit scheme they have.

 

My harness guy helped me understand how VATS and disabling DTCs is done on the GM ECM. The 2006 HHR ECM seems to work with the CTS pedal, but I need to do further testing to make sure. If you ever need a GM harness, Steve @ EFI Harness is a very helpful person. Steve@EFIHarness.com 909-910-3867

 

Headed to Thunderhill tomorrow, most likely racing with the ex-owners of your car. Was watching some youtubes as a refresher last week, and saw your car! Was watching a bunch and can't find it again now, but it's there.Good luck on the wiring, and hope to see you out there soon!

 

You are racing their overpowered BMW? That thing is a beast.

 

The junkyard ECM with VATS removed seems to be working for the pedal I have. There doesn't seem to be a way in HP Tuners to recalibrate the pedal. I didn't make Chuckwalla.

 

No, I should have clarified, I'm racing against them, in our Miata.

Feel free to check out how their day ended, skip forward to 2:15.43

 

Wow. Seems like they needed more work on their firewall sealing. Why didn't he flip the kill switch?

 

No fire extinguisher on board? That was crazy!

 

Rules require a fire suppression system. Doesn't look like he pulled it or turned off the kill switch.

 

He did, you can see the fire go out and a puff of white smoke after. Worked great if you asked me. Not hitting the kill was his biggest issue.

lesson learned kids, always dry sump your LS! Never had issues like this with the ecotec

 

Didn't see that.

In other news, my car still is not on the ground, but I did register and pay for the 24 HoL race Dec 13-14th at Sonoma. What could go wrong?

 

It has finally left the garage under its own power. It should be on Sonoma racetrack 14 days from now.

 

She lives!! Love to see it. Congrats on the first fire up, well-deserved after all those hours you put in.