C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1984 egr

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Old Jun 18, 2020 | 11:41 AM
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Default 1984 egr

I have been slowly resurrecting a 1984 so that things actually work (at least the car drives). My latest headache is the elusive EGR solenoid (ACDelco 214-333, GM 1997125, SMP VS29) in that the part is just no where to be found. I was thinking about doing an EGR delete as a last measure but then came across a mention that ACDelco 314-358 would work. Was hoping either someone had a lead on the original part or can confirm the replacement (or any other replacement) will actually work. Thanx in advanced...
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Old Jun 18, 2020 | 07:08 PM
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Hello there JustAnotherVette!

I have a 1988 C4 and had the same problem about fifteen years ago when I started looking for a replacement the the EGR Vacuum Solenoid. I did not know the part number but had a very hard time finding a working unit that looked similar to the one that came on my C4. Today they are readily available for most of the C4's in places like Zip Products for several of the years.

I went to a NAPA store and had one match one up for me made for GM vehicles. The control system uses Pulse Width Modulation to activate the solenoid and control the EGR on the 1988 C4. Have someone look up the same part used on other GM models for the same year and you should find something close. Zip has the EGR Vacuum Solenoid for 1985 thru 1991 L98's for $70 and it might work. I will defer to the experts we have on this Forum with the unique 1984 and 1985 Corvettes

As far as deleting the EGR, that is always available to do if you choose to go that way. I prefer to keep mine working as they actually help the engine run cooler and improve the performance. You should be able to find a close match on the part and make it work until one day somebody makes more of them.
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Old Jun 19, 2020 | 08:45 AM
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On my 84 it was broken so I removed the EGR and installed a blanking plate. I know this isn’t what your looking for but it didn’t seam to effect the engine operation.
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