Thread: Where is the overload relief valve on an 84 300 SD.
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Old 09-08-2016, 11:24 PM
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Rogviler Rogviler is offline
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Quote:
Originally Posted by sixto View Post
For an overboost warning light, use the same ground trigger the valve uses. It's the inch diameter switch with a single wire on the intake manifold. Hmm... the other end of the wire at the valve is closer to the gauge cluster.

It doesn't have to vent boost, it just has to block the boost signal to the ALDA. The turbo can't blow anything close to 15psi or even 10psi with no boost signal to the ALDA.

Sixto
83 300SD
Thanks. So I think my understanding of overboost protection was correct. Otherwise you could remove the ALDA and still have the protection with just the switchover valve, which isn't the case, correct?

-Rog
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