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200 Series General Forum for the Volvo 240 and 260 cars |
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Throttle Position Switch (TPS) FixViews : 439 Replies : 0Users Viewing This Thread : |
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Sep 1st, 2022, 22:22 | #1 |
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Last Online: Feb 18th, 2024 23:05
Join Date: Jun 2022
Location: Ardleigh, Colchester
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Throttle Position Switch (TPS) Fix
Not a question for once, but a sharing of knowledge (something I intend to do a bit more going forward).
Recently, I noticed that the idle Throttle Position Switch (TPS) in my LH2.4 B200F was playing up... But only the idle one. Long story short, I ended up buzzing out the switch module itself with a multimeter set to continuity and found the idle switch itself to be faulty. I decided to open it up and see if it was repairable before shelling out £50+ for a new one, given it's literally just two switches and I'm an electronic engineer. The TL;DR is that one of the internal contacts was basically not making contact anymore (very marginal, occasionally made contact if the slightest pressure was applied to it) and 5 minutes of soldering later and it was fixed. Below is a link to a full write-up of it including the fault-finding process, how to remove and open the TPS module, the repair itself, and general information on the TPS operation. It might be worth sharing/linking this in other redblock-platform forums as well since this is (as far as I know), generic to any LH2.4 system. Feel free to post any related questions and/or critiques of my write-up, I can edit and add pretty much anything within reason, although I'd rather not remove it again to grab more pictures (although I'm aware they are somewhat lacking). Link: https://unintegratedcircuit.wixsite....ircuit/blank-1 Regards, Adam
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1990 Volvo 240 GL Auto "Catalyser" (oOOoh, fancy). B200F, about as original as they come, and all in BLOO. ~140k
My electronics website/blog thing: https://unintegratedcircuit.wixsite....egratedcircuit |
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b200f, b230f, lh2.4, throttle position switch, tps |
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