1985 Buick 3.8L Turbo First Fire Up

[kenmosher]

5-7 g/s is in the right ballpark. If it fluctuates a lot, then it can be the result of an unstable idle. If it's way low, either pretty big air leak post MAF or bad sensor.

[pfredricks]

Originally Posted by kenmosher

5-7 g/s is in the right ballpark. If it fluctuates a lot, then it can be the result of an unstable idle.

Ah, that's what I was wondering....

I plugged the PCV tube leading into the vacuum block and now the MAF is reading 6 gm/sec and is steady. I'm seeing the AFR much better, 14.5 to 15, it goes rich occasionally. This is not what it was doing before I plugged the line when it was lean all the time.

I tried some carb cleaner spraying around the intake and vacuum line connections. I had a steady idle throughout.

In general, there were a few times when the idle would fluctuate, and other times it was steady at around 850-950 RPM. IAC counts were in the low 20s.

It idles better with a high TPS idle voltage: 0.51 volts. That seems a tad high to me.

At this point I'm confused about how the PCV works. I'll study the vacuum line diagrams.

Thanks for the info.

[pfredricks]

Ken,

Do you have any boost kits for Turbolink? I've got a spare 3 bar MAP sensor.

[kenmosher]

Sorry, nope ... haven't made or sold a TurboLink in about 5 years.