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Guys,

Hello. I'm trying to improve drivability on my truck again. Idle is my first area of interest. There are a variety of issues, but the first one I am wondering about is why it can set and...

Russ,

Any thoughts?

Thanks,

Ken

I can try backing off the screw now, but it is barely holding the throttle blade open.

Why am I only seeing the problem when it is hot and in park?

So, I followed your advice and did not increase the drill size. I played with decay rate. I think that helped. It definitely starts better both cold and hot. Cold still needs a little help from...

I ended up staring with a 3/16" hole. It was an improvement, but not the fix. I upped it to 1/4" and that made it better, but it still wants to die when backing up and coming to a stop. It...

Ok. thanks. How does a 1/4" hole sound for a starting point?

Well, the scanner and tune dislay in degrees F but the scanner does not display the units for flow of lb/ min as seen in my tune. I would assume they are the same units based on the temp.

I...

So I gave that a try. I first reset the TPS 2% higher and then zeroed it as stated and confirmed it as suggested. I entered a cal that had values for the IAC that were recorded in the config file as...

Thanks. I'll give that a try next.

I don't recall the specs right now. ABout 0.594" lift and 110 of lobe separation. The MAF is connected. The VE table may be way too rich as well. I have altered that, but I am not really trying...

I really appreciate the guidance. I was not able to work on the cal until yesterday and today. I followed the steps above I believe to a T. My shop was about 68 so I started recording data at that...

I have just installed a 408 with a FAST truck intake, 46 lb/ hr injectors and 102 mm throttle body. I am having some trouble at idle. Specifically, I have to hold it at about 1400 RPM to warm it up....

I have just installed a 408 with a FAST truck intake, 46 lb/ hr injectors and 102 mm throttle body. I am having some trouble at idle. Specifically, I have to hold it at about 1400 RPM to warm it...

I could use some advice on the idle air control logic for an LS motor please. I have just installed a 408 with FAST injectors, truck intake, and 102 mm TB. In order for it to start I have to put my...

Thanks for the tips. I will get a wideband sensor and follow your guidelines.

Ken

I have a 2000 Chevy pickup with the GM hot cam and no cats. I would like to do some tuning with a wideband O2 sensor, however I am told the stock PCM won't read the output from a wideband sensor. ...