Lots of them reman these sensors but none of them work properly on our cars. If you bought 100 you might get lucky and find one that works. The modern maf sensors with a translator or a MAFT pro with no MAF (speed density on a budget) work best with the 86-89. I know you have a 84/85 and I can’t imagine the reman sensors for those are any better. I went down this rabbit hole a long time ago buying “good used” and “reman” MAF sensors because I didn’t understand how much better the car would run with the translator and modern MAF. Spent a lot of time and money throwing parts at it thinking I had IAC, PCV, O2 sensor, vacuum or gasket issues. The MAF gave good number at idle so I thought it was good. Replaced with the used and reman units so I thought it must be something else...
Where do you live? Maybe someone local can let you borrow a 86/87 ECM, translator and Modern MAF before you spend the money.
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