The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Messages posted here can be viewed by the public. Message Board Disclaimer and Terms of Use The car is coming back from the shop tomorrow and I'll check out my hunches.įor now the fuel shutoff solenoid has been electrically unplugged from the circuit and it's running fine. It's letting the 12V signal through to the fuel cutoff solenoid when it's not supposed to.įrustrating as the micro switch is brand new. Pretty sure this means I have a faulty micro switch. My engine began to start shutting down at speed.accelerating and cruising, but would idle OK. Not a very stable situation.hence the need for the hysteresis. If both the rising and falling rpm set points were the same say at 1500rpm, then when you were cruising at 1500rpm, yourĮngine would be cutting out and starting back up very intermittently, it would be trying to stop and start at the very same The difference in the rising (1500rpm) and falling (1300rpm) is called hysteresis. Turning off the fuel cut off solenoid and restoring fuel to the engine. This continues until engine revs have dropped to 1300rpm when the speed switch no longer supplies the 12V signal anymore Switch and energize the fuel cutoff solenoid. When traveling at speed (above 1500rpm) and you lift your foot off the pedal to slow down, the throttle linkage falls back toĬontact the micro switch button (pushing it in) and allowing the 12V signal from the speed switch to pass through the micro The micro switch is now in the "open" position and no current/voltage can flow through it to the fuel cutoff solenoid. To be at (or above) 1500rpm, your foot is on the gas pedal and the throttle linkage has lifted off the micro switch button. The speed switch on the relay board supplies 12 volts to one side of the micro switch when the engine revs are above 1500rpm. A few clicks will allow you to make a fair and relevant choice.I'm working my way through some problems on my MFI system as well. The product you are looking for is probably among these pages. We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. Shopping on the Internet is no longer a chore, but a real pleasure! However, it can take time when it is necessary to open all the pages, compare the opinions of the Internet users, the characteristics of the products, the prices of the different models… Offering you reliable comparisons allows us to offer you a certain time saving and a great ease of use. When you search for a product on the Internet, you can compare all the offers that are available from the sellers. What is the purpose of a comparison site? You won’t have to choose your products at random anymore. Also discover our comparisons by categories. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Automotive Replacement Decelerate Fuel Cutoff Relays in order to find the best quality/price ratio. And as you will discover, the best Automotive Replacement Decelerate Fuel Cutoff Relays are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison. On the market, you will find an incalculable number of models, all at different prices. It is never easy to choose from the wide range of offers. Looking for the best Automotive Replacement Decelerate Fuel Cutoff Relays?ĭiscover now our comparison of the best Automotive Replacement Decelerate Fuel Cutoff Relays.
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