electronic instrumentation recalibration May 04, 2017, 06:25:08 PM has anyone recalibrated an electronic cluster,evtm says "recalibrate" as per shop manual fuel gauge seems low, not real sure on the other gauges:D Quote Selected
electronic instrumentation recalibration Reply #1 – May 17, 2017, 09:32:41 PM interesting,,what page you on? Quote Selected
electronic instrumentation recalibration Reply #2 – May 22, 2017, 07:57:08 AM apology's it was fuel gauge I was reading. I have the full electronic (digital dash ) as im sure you do in the 20th anv , my issue is the spedo is inaccurate 10 mph + , would you happen to have the part # for the correct one ? i have the correct driven/ drive gears( yellow on trans (t5) and 21 tooth (red) on sensor) Quote Selected
electronic instrumentation recalibration Reply #3 – May 22, 2017, 11:38:37 AM this is something i am not the best person to speak to about.I've changed speed sensors before,,easy job but,,,,i think i know a source.my 351 bronco i converted to 5speed and the gear color is yellow.the source for the transmission i used was your 89, 90, 91 F100 or F150 etc with the 5 speed Mazda TK transmisison. Quote Selected
electronic instrumentation recalibration Reply #4 – May 22, 2017, 01:03:51 PM Quote from: 20thanvcat;460863apology's it was fuel gauge I was reading. I have the full electronic (digital dash ) as im sure you do in the 20th anv , my issue is the spedo is inaccurate 10 mph + , would you happen to have the part # for the correct one ? i have the correct driven/ drive gears( yellow on trans (t5) and 21 tooth (red) on sensor)Well if it's reading too fast you need a drive gear in transmission with less tooth count... Dropping from 8T(guessing that what's inside) to 7T will make a large difference... The 21T driven gear is as many teeth as Ford sells but there is a aftermarket 23T available... That one should slow down reading approx 5-7 mph... Clinker is they are reported to have a short life... Quote Selected
electronic instrumentation recalibration Reply #5 – May 22, 2017, 09:50:27 PM If you have a good Ford parts guy they have a formula to figure out the drive gear. You'll need the part number of your trans and your rear gear ratio. Quote Selected
electronic instrumentation recalibration Reply #6 – May 22, 2017, 10:19:33 PM Quote from: tommym;460885If you have a good Ford parts guy they have a formula to figure out the drive gear. You'll need the part number of your trans and your rear gear ratio.No parts guy necessary, there are online calculators...Here's one from Ford Racing Parts... If calibration is wrong with listed gears there are other factors in play, like tire size or maybe a flaky speedo head... https://performanceparts.ford.com/download/pdfs/SpeedometerGearUsageChart.pdf Quote Selected
electronic instrumentation recalibration Reply #7 – May 23, 2017, 12:27:20 PM ford racing has the formula - and according to the spec, i have the correct setup for my combo --thats why i was wondering about the sensor self , seems it would have to be diffrent for a buttstuffog dash vrs the full digital dash ? Quote Selected
electronic instrumentation recalibration Reply #8 – May 23, 2017, 12:36:44 PM Quote from: 20thanvcat;460892ford racing has the formula - and according to the spec, i have the correct setup for my combo --thats why i was wondering about the sensor self , seems it would have to be diffrent for a buttstuffog dash vrs the full digital dash ?Nope a gear for a T-Bird with buttstuffog or digital dash is same, or Mustang, Crown Vic etc... Would be a major kludge if heads were calibrated differently... All speedos are calibrated(or at least were, now days it's a whole different game) to read 60 mph at sensor or cable speed of 1000 rpm..What is your combination and exact issue(include gear ratio)... Hard to help if all the details are not known... Quote Selected
electronic instrumentation recalibration Reply #9 – May 23, 2017, 03:50:43 PM ok : t5 trans has yellow gear (7 tooth on output shaft) speed sensor has red gear( 21 tooth on speed sensor)rear axle is 3.73 gear according to ford racing speedometer gear useage chart for 7.5-8.8 axle this is the correct setup this is a used electronic cluster reading aprox 10 mph high i:e;reading 85 (and this is max for this cluster will not go to 87-88-89mph )at 75mph Quote Selected
electronic instrumentation recalibration Reply #10 – May 23, 2017, 07:13:57 PM Quote from: 20thanvcat;460897ok : t5 trans has yellow gear (7 tooth on output shaft) speed sensor has red gear( 21 tooth on speed sensor)rear axle is 3.73 gear according to ford racing speedometer gear useage chart for 7.5-8.8 axle this is the correct setup this is a used electronic cluster reading aprox 10 mph high i:e;reading 85 (and this is max for this cluster will not go to 87-88-89mph )at 75mphYou sure this thing doesn't have 4.30 gears in the rear??? Or maybe 12" tires?? Yeah that's it, I'll bet some guy's Honda 600 is setting on blocks... :hick: That's approx what the speedo thinks you're running... What size tires??? the stock 225/60/16 Turbo Coupe/5.0 Stang are around 25.5-26" tall... But again you'd have to have rather small rubber to throw the speedo off as much as it is... Why has the speedo head been swapped?? I don't know if there is a difference in speed sensors but I don't think so... I've never had a issue swapping them around... BTW assuming the head is out of calibration, you could swap to a 6T drive gear and be close, probably would need a 20T on the speed sensor...BTW #2 there is a mod for head that eliminates the 85 mph limit in display, but I don't remember any details, I've always run buttstuffog... Quote Selected
electronic instrumentation recalibration Reply #11 – May 24, 2017, 01:33:21 PM he knows i think,, its a jumper wire added to the speedo circuit card discovered by bondocougar.w2 mod we call it Quote Selected
electronic instrumentation recalibration Reply #12 – May 24, 2017, 08:19:08 PM the cluster was swapped due to speedo light out (no numbers and printed circuit board separating ) running stock size tires (as per door sticker) 3.73 8.8 from 88 tc (disk) I also noted tach is off (a lot) and i saw a thread about installing a resistor? but can't find it now (everyone saying there not accurate anyhow ) and want it somewhat close. Quote Selected
electronic instrumentation recalibration Reply #13 – May 25, 2017, 11:09:09 AM you must mean the flex print / flexible circuit layers?i found on my Coug,, not the 20th,, that the small narrow section that "enters" the bottom of the speedo had by my own doing separated and the resulting lines of tin/solder runs was cracked.i took out the flex print, separated it apart, added small 30awg jumpers to close the gap, then wiped on some clear slicone and closed it back up,, all fixed.this broke due to my earlier years not knowing the stages and steps involved in proper removal. Quote Selected
electronic instrumentation recalibration Reply #14 – May 25, 2017, 11:11:31 AM i remember the resistor thing as well, i dont own a tac car , my son does though.muddle through my evtms below,, or if you want,, search out the Master blaster's Neat thread archived.. i think under greatest hits and near misses.in there i believe there is a thread he did or maybe not him,, speaking ot this resistor. Quote Selected
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