Thread: Hard to start
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Old 09-30-2013, 10:45 PM   #14
speedjunkie
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Well after working on it this weekend I have a few more issues lol.

I figured out how to route the Innovate cable so it would work and I ordered another one and had it overnighted. I'm sure glad I spent that money because it was useless. I think the TC-4 is either bad or just not functioning for some reason. With the cables routed per the instructions, it won't let anything through to the ECU or the wideband gauge, but if you plug the cable from the LC-1 directly into the ECU or the gauge you get a reading. The way it's supposed to be routed according to the directions is terminator plug to LC-1 in, LC-1 out to TC-4 in, TC-4 out to XD-16 in, XD-16 out to ECU in.

Then I think my wideband took a crap altogether because it's reading 2.5 AFR now, or sometimes it will read either 2.5 AFR or completely lean (20.9) like when it's under decel. I tried an extra sensor I had, and did a free air calibration on both of the sensors and nothing worked. So now I'm looking at getting a new wideband, probably an MTX-L.

My buddy came down to tune this weekend and we discovered that the MAP sensor selected was the internal 4 bar that's in the ECU, but what I was using was a GM 3 bar. We disconnected the MAP sensor altogether and started the car without one, revved it and everything, and it all worked beautifully without a MAP sensor. When it was still on the 3 bar, we selected external MAP sensor and it wouldn't even start the car, but we realized we hadn't calibrated it according to the instructions. On the internal 4 bar sensor, the car will start but it's really tough like it used to be. It makes me wonder though if it's still not a tuning issue, because I figure if it was mechanical it should have been hard to start without a MAP sensor as well.

I've been talking to Andy Wyatt that owns Adaptronic and he's super nice and helpful, and he also deals with Innovate products so he's able to help a bit there too.

I also did some troubleshooting on the fuel gauge issue and discovered my fuel level sender is still good, so I'm thinking either the cable disconnected behind the gauge cluster or the gauge is jacked. I had even changed the ground on the wiring to the same ground as the fuel pump wiring.
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