gm boost solenoid

gurov · 2008-09-26 05:01:43

back up.

this is the right way, closed loop boost control boost is fucked up in the megasquirt 1 for now. don't use it, go straight to open loop.

darsondriss · 2008-09-26 10:38:14

whyd you take the little sock off the NO one?

gurov · 2008-09-27 22:22:34

darsondriss wrote:
whilst i remember the part numbers for the boost control solenoids used for boost control are:

Boost Solenoid:
GM # 1997152
ACDelco # 214-474

Connector pigtail:
GM # 12102747
ACDelco # 12102747

ill try and get some pics up tomorrow

gurov · 2008-09-27 22:22:51

darsondriss wrote:
whyd you take the little sock off the NO one?

sock was on the NC one

gurov · 2008-09-28 01:03:11

gurov · 2008-09-28 01:20:09

pimpsmurf wrote:
you hosed it differently than I did (with a pulse=increase boost)

I put the wastegate on the metal one and the manifold on the NO side

-JNY

you will overboost if you disconnect power to the solenoid.

way you have it now is you have equal pressure to the top of the gate as the side with the solenoid in the OFF position.

darsondriss · 2008-09-28 13:18:20

pimp hes right if you have manifold pressure on the top of the wastegate and manifold pressure on the bottom of the wastegate your going to overboost... i was arguing the same thing with him last night until it finally clicked lol

darsondriss · 2008-10-26 15:57:08

pimpsmurf wrote:
Did you find out anything beyond our last conversation?

The image you posted above demonstrating vacuum line plumbing for the wastegate seems to be for a single line wastegate, with the top port left open.

It would be different for a setup with the bottom port on the wastegate going to a boost source, and the top port having the solenoid inline, obviously.

I'm so confused at this point by the NC/NO/COM ports that I'm ready to take a nap. I don't have the car here so I can't figure it out for myself. Stupid crank pulley...

-JNY

we are currently looking into other options for boost solenoids as mine and black04specvs has failed on us. gurovs got a nice hookup on some other solenoids that if i ever get some spare time i will be testing. Should have results in a day or two after i finish some hw.

darsondriss · 2008-10-26 17:16:43

pimpsmurf wrote:
darsondriss wrote:
pimpsmurf wrote:
Did you find out anything beyond our last conversation?

The image you posted above demonstrating vacuum line plumbing for the wastegate seems to be for a single line wastegate, with the top port left open.

It would be different for a setup with the bottom port on the wastegate going to a boost source, and the top port having the solenoid inline, obviously.

I'm so confused at this point by the NC/NO/COM ports that I'm ready to take a nap. I don't have the car here so I can't figure it out for myself. Stupid crank pulley...

-JNY
we are currently looking into other options for boost solenoids as mine and black04specvs has failed on us. gurovs got a nice hookup on some other solenoids that if i ever get some spare time i will be testing. Should have results in a day or two after i finish some hw.
nice. Why have you been having the solenoids fail? How many hours of use? Mine has gone around 1-2 hours of time working (ie, actually in boost) because I have a small wastegate spring and it starts attempting to adjust boost around .1 psi.

-JNY

we dont know... it they just stop controlling boost. Like if i set it the correct increase decreasing(correct for the way i plumbed the line, i broke off one of the ports lol) it overboosts. if you set it increasing increasing it does wastegate pressure. But the funny thing is mine worked for a good 2 -3 weeks and then i went to plumb it to increasing increasing setup and it hasnt worked since... dispite how its plumbed, what setup its on, etc. But the solenoid clicks over fine and if you take it out hook it up and blow into it it will hold pressure stable... it makes no sense

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gm boost solenoid

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pimpsmurf wrote: