Intermittent Code 61 Ideas

[Paul Workman]

The casual reader of this and other ZR-1 boards quickly pick up on the fact that the 15-20 year old vacuum circuit is one if not THEE most common nags associated with the LT5s.

Parts not used don't cost anything and they seldom break!



I'm using Marc Haibeck's secondary elimination chip b/c it has several other drivability features really worth the $$: The fans come on early, the idle, especially on startup is handled nicely, fueling and spark advance minimize power loss when the engine is at normal op temp, and a couple more features too...Not to mention no more finicky secondary naggings! Eliminating the damn things is a consideration. And, there just might be a few more ponies in there when the throttle rods and plates are out of the air stream!



P.

[scottfab]

Originally Posted by Paul Workman

......the fact that the 15-20 year old vacuum circuit is one if not THEE most common nags associated with the LT5s.
Parts not used don't cost anything and they seldom break!
P.

What does that do to resale? How do you keep your son or guest driver from using to much HP.
I think I'll keep mine the way it is, more for the guest driver
After all GM has all those expert engineers and they would not design it that way unless it was right............ well someone said that way back when.
I don't believe it. Just thought I'd throw that in.

[phrogs]

well since I don't have guest drivers Im removing my secondaries Im sick of the BS of dealing with them.

I have been getting a Code 61 at high RPMS and with a moded motor I don't feel that one more thing is going to hurt it at all.

Makes my plenum pull all the more enjoyable!

My spare 90 chip just went out in the mail about an hour ago to go to Mark.

[tomtom72]

I was just thinking about this "ditching the secondaries" thing. I mean no offense to anyone with MHO.
I think that any one interested enough to actually want to own a ZR-1 knows already about the advantages that not having all that crap under the plenum to mess with are real. The people that are totally outside our community will probably not even realize that the stuff isn't installed until they have to pull the plenum. I'm sorry but the people that are potential "casual" ZR-1 owners don't know enough about the LT5 before buying. They want a garage queen and since they are not going to drive the car that much, they'll never know!

And lastly, and the biggest BFO to me anyway....is that I just realized that my car has passed NYS smog Nazis inspection the last four years with the power key in the "FULL POWER" position! And the NYS test on OBDI cars is a chassis dyno load test thru a simulated city/highway loop. The numbers were not so good, but they were not over the limits!