Both of the sensors are brand new (AC Delco). This is a P59 ECM (Gen 3). I tested the voltage at both pins on the sensor connector. Not a pin and the chassis. The sensors aren't lazy. I get...
Type: Posts; User: samgm2
Both of the sensors are brand new (AC Delco). This is a P59 ECM (Gen 3). I tested the voltage at both pins on the sensor connector. Not a pin and the chassis. The sensors aren't lazy. I get...
O2 Sensor Heater Circuit Failure. I've been trying to deal with this issue for a while and I just can't seem to resolve it.
1. The O2 sensors show about 10 ohms on the same color wires.
2. I...
O2 Sensor Heater Circuit Failure. I've been trying to deal with this issue for a while and I just can't seem to resolve it.
1. The O2 sensors show about 10 ohms on the same color wires.
2. I...
What is the secret here? I've hit the LTFT reset button over and over and it never clears.
You make some good points, Alvin. And yes, I will spend a lot more than the cost of the x-link to get this done. I just want to try it. It will be a low-priority project to be sure. I just don't...
SiriusC1024, of course you have to apply some math. The part (HAR3725) performs the linearization. Additionally, it allows for the addition of 32 line segments to fine-tune that linearization. ...
Kevin87Turbot, A DBC swap requires that I get rid of my PCM in lieu of a PCM with an installed IAC controller. I would lose the license on my current - now useless PCM. Finally, it would require me...
Atkinsond, the X-Link is far too expensive to be a real option. Replacing the circuit or the IC in an aftermarket TB would be reliable as well as cost-effective.
My cable is correct, which PCM/vehicle would you segment swap with? My PCM is a 2004 Silverado. Which compatible PCM utilizes an LS2/3/7 throttle body?
After a great deal of testing, I've sadly come to the conclusion that using an 03 - 05 DBW computer to control an LS2/3/7 style OEM or Aftermarket Throttle Body is not straightforward.
The 03 -...
I appreciate the insight and your concern but this is still a GM TB and I will assume well made. I don't mind complex.
I was actually hoping to get information from someone that has tried it. ...
The intake and throttle body came off a 2015 Silverado. I am starting to suspect that the throttle body is just incompatible.
I am stumped. I've tried everything and nothing I try seems to work. I have:
An after-market harness (C5)
A 6L Gen 3 Engine
A P59 PCM
A 2015 GEN 4 Intake and Throttle Body
I...
I'm currently tuning my daughter's 2001 Wrangler with a stock 4.0l and automatic transmission. It is turbocharged. I don't think you are going to find a "basic tune." I don't know what that would...
I studied this ECM a bit and don't see a very good reason to change the multiplier. The correct multiplier for a 2 Bar sensor would be twice that of a 1 Bar sensor. A small change in offset might...
Does anyone know how this is determined? Is this a measured value (say from a load cell in the transmission)?
I've taken apart several 4l60E transmissions and have never seen a load cell.
Is...
Great question, since they are ALL flex fuel anyway!
What is really interesting are goofy spark number for the few flex fuel vehicles out there when they run E-85. If I didn't know better, it is...
It is a HUGE mistake to simply look at the heat of combustion of the two fuels and think that this relates directly to mileage. IT DOES NOT.
I have seen this done in the name of Thermodynamics. ...
I can only retard timing on the E37 computer on my cobalt
Just finished an MPG test with the Cobalt (normally aspirated) 2.2L.
Tune:
Increased starting air by 40%.
Copied High Octane spark table into the low octane spark table.
Added 6 degrees of...
Initially, I started out with 26 MPG on the highway with my 2007 normally aspirated 2.2 Liter Cobalt with E-85 (adjusting only stoich). After just a basic and simple tune on the spark tables:
...
From what I have been able to tell, pretty much every car GM has made since 2007 has the flex fuel stuff code in the computer but it is disabled.
That said, I have not been successful in enabling...
My car is a 2007 Cobalt with the Ecotec 2.2 Liter engine (normally aspirated).
I already tried copying everything that seemed pertinent from a truck computer. No joy. The car never learned what...
I do not believe this is true. My latest information from mechanics at the dealership is that GM no longer uses sensors. The best information that I have is that the computer uses a virtual sensor...
I am working with a 2007 Chevy Cobalt. I enabled every parameter I could find regarding flex fuel operation and still no go. The car still won't run as a flex fuel vehicle and I am not sure why.
...