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'''[http://www.capriracing.co.uk/ Tony's Capri]''' ---- Question: Hi Tony here, Another slight problem to run along side the one below, The ecu is getting its trigger from the tach output from the hyfire, (think Richard B said it was a sqaure wave or close to) the MegaTune rev counter dial reads 6k when the hyfire is put in test mode, but the on board car tach reads 3k as it should, Any ideas????? ---- Question: Tony reports that the IAT reading on MegaTune stays at 77degC regardless of whether the sensor is plugged in or not. He has measured the resistance between EC36-pin2 and EC36-pin26 as 4.7k to 5.2k The firmware version is 1.0.23 * Measure voltage on EC36pin2 (with respect to EC36pin26 GND) ** without sensor, it should read 4.9V (min 4.5V). If it's 0V with open connection, the pullup resistor inside disjoined (unlikely, but easy to fix with only endplate removed) ** if it falls to 0V with sensor attached, the sensor or harness is a shorted instead, and should be checked * preferrably use a table ( hexpatch.exe vems.hex ... see EasyTherm ) that has no 77C fallback at the extreme (5V). * try to apply a known 2k7 or 10k resistor from GND to EC36pin2. ---- http://www.vems.hu/files/MembersPage/RichardBarrington/Capri/capri-small.jpg http://www.vems.hu/files/MembersPage/RichardBarrington/Capri/stickers.jpg Keeping it simple, and retaining invested components... we'll run banked fuel injection and single channel WB02 only. Aim for the car is simply to improve fueling quality and verify fueling accuracy. Here's what we'll need... MembersPage/RichardBarrington/CapriBOM Here's how we'll do it... MembersPage/RichardBarrington/CapriWiring Here's how it'll be set up... MembersPage/RichardBarrington/CapriConfig Here's what happened... MembersPage/RichardBarrington/CapriBuild When that's all running well, we can think about stepping up to sequential injection, ignition, and even nitrous control - with a proper crank trigger. ---- Back to MembersPage/RichardBarrington
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