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Help! TPS problem M50

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    Help! TPS problem M50

    I believe I have an issue with the tps. When I'm driving it hesitates on low rpms. I disconnected the tps plug and nothing happens. Could it be a harness issue?
    1986 328 M50 stroker turbo, Precision 6262, Miller tuned, Aeromotive a1000, 8.5.1 Wiseco pistons, Eagle rods, Tial wastegate @20lbs, Tial bov.
    Instagram @e30_fred

    #2
    How's your MAF?
    1988 Atlantisblau Euro/Japanese 325i Cabriolet
    1989 Schwartz 325i - now M50 powered! - now very dead
    1998 Toyota 4Runner Limited
    My 17,000km Big NA National Parks trip!

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      #3
      It's a Miller performance blow through maf. I didn't checked that, could it be dirty?
      1986 328 M50 stroker turbo, Precision 6262, Miller tuned, Aeromotive a1000, 8.5.1 Wiseco pistons, Eagle rods, Tial wastegate @20lbs, Tial bov.
      Instagram @e30_fred

      Comment


        #4
        Originally posted by boosteddirty View Post
        It's a Miller performance blow through maf. I didn't checked that, could it be dirty?
        Actually, i'd check your coils both physically for tears in the boots and if they're within spec with your multimeter - that seems to be a common issue for low rpm hesitation
        1988 Atlantisblau Euro/Japanese 325i Cabriolet
        1989 Schwartz 325i - now M50 powered! - now very dead
        1998 Toyota 4Runner Limited
        My 17,000km Big NA National Parks trip!

        Comment


          #5
          I've had bad coils that passed the resistance test. I've also had good coils with cracked bodies. The boots seem to be the biggest issue in my opinion.

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            #6
            Makes total sense. I never replace the coils ever since I bought an e34 with the m50 about 6 years ago. And on top of that who knows if the previous owner replaced them.... Thanks alot for the help. I'll keep you guys updated.
            1986 328 M50 stroker turbo, Precision 6262, Miller tuned, Aeromotive a1000, 8.5.1 Wiseco pistons, Eagle rods, Tial wastegate @20lbs, Tial bov.
            Instagram @e30_fred

            Comment

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