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Thread: Help with nagging issues

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    Help with nagging issues

    I've asked this question on the other forum and as of yet, I still haven't fixed the problem. My speedo stopped working when I installed my AEM computer or it seems that's when it stopped. Things I have tried
    Replaced the drive gear, made sure the top of the sensor was turning, replaced sensor and cluster. Took it to a shop and they said that the signal was being generated by the sensor but then it dies some place. Not sure what that meant.

    Also the fuel gauge doesn't seem to work either, I've replaced the sending unit in the tank. The low level light still works though.

    any help will be greatly appreciated

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    What year and model? There are two types of speed sensors used. I may be having pretty similar electrical gremlins. My fuel gauge does the same thing and I always assumed it was the in-tank parts. Recently, my speedo has stopped working at low speeds. I know early NA models use a reed switch in the cluster and based on what you have said. I'm starting to think the cluster may be the problem. Did this happen right after the install? i.e. working fine before and then dead after?

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    Twin Turbo verified Feedback Score 5 (100%) GTOJOE's Avatar
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    Signal from the speed sensor goes to the ecu then from the ecu to the cluster. Does your AEM have any settings relating to the speedo? perhaps it has to be set correctly.

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    thanx guys for responding, my car is a 93 vr4. i dont know enough about the aem to know if it has a setting for the speedo or not. it seemed to have started when i installed the aem, really not for sure. it did work before the aem install

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    Quote Originally Posted by RL7 View Post
    What year and model? There are two types of speed sensors used. I may be having pretty similar electrical gremlins. My fuel gauge does the same thing and I always assumed it was the in-tank parts. Recently, my speedo has stopped working at low speeds. I know early NA models use a reed switch in the cluster and based on what you have said. I'm starting to think the cluster may be the problem. Did this happen right after the install? i.e. working fine before and then dead after?
    Early NA's use a speedo cable. if its stopping at low speeds it sounds like the gear on the end of the cable is partially stripped.

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    I'm Kind Of A Big Deal Feedback Score 8 (100%) Emilie@GZP's Avatar
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    All Vr4's are electronic. only 91-92 NA's I believe are cable driven.
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    Its 91-93 NA's that are cable driven if memory serves. 94+ are electric.

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    Man vs 3/S verified Feedback Score 6 (100%) R/T93's Avatar
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    Quote Originally Posted by stealthee View Post
    Its 91-93 NA's that are cable driven if memory serves. 94+ are electric.
    Correct
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    Ok, so we have established which NA's are cable driven and which ones are electric. Unfortunately this doesn't help me out. Any good info pertaining to my 92 VR 4 will be greatly appreciated guys.

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    Wut wut? verified Feedback Score 3 (100%) TT4ME's Avatar
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    Is your cluster 180mph?

    If it is, I'm fairly certain that they cannot read off of the speedo cable/gear.

    If it helps any.. when I bought my 92TT, it had 160mph speedo with the cable going to the trans gear. I swapped it out with the 180mph "correct" one and pulled the speedo cable out of my car. The 180mph cluster works off of my wiring harness.

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