well i was driving the se yesterday and noticed he tach was sitting higher then usual while i was idling but the car sounded the the same as always. i took a look at my pfc commander and found digitally my rpms are normal but the tach reads 500rpm higher then my pfc. what can I do? its not that big of a deal its just a little peevish
thanks james |
wtf guys!!!!
wow exactlty 12 hrs apart |
wtf you want an answer ASAP or something give the people time
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is it always 500rpm high? or does it get worse with rpm?
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A generous application of alcohol will fix this.
Seriously, the factory manual has a chart of values at 20 degrees C. The allowable range for actual 1000 rpm is 880 to 1060 rpm. If the tach reads outside this range, replace the tach. |
I think it was icemark who told me that the factory tach is adjustable?
here is what he said: Pretty easy to re-calibrate the stock gauge. There is a adjustment pot right on the back of the gauge's sub panel. both of my FC tachs are way off, I have shift lights in both and just rely on the lights |
Originally Posted by Rob x-7' post='920528' date='Apr 15 2009, 06:01 PM
I think it was icemark who told me that the factory tach is adjustable?
here is what he said: Pretty easy to re-calibrate the stock gauge. There is a adjustment pot right on the back of the gauge's sub panel. both of my FC tachs are way off, I have shift lights in both and just rely on the lights Funny. I went to the factory manual expecting to find a calibration procedure. Based on the info therein, I concluded that there was no adjustment. Erroneously, I suppose. |
I have a extra cluster I will check when I remember
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there is a little potentiometer on the tach.
if its just a couple hundred off everywhere it might be within the adjustment range if its 500rpm off at idle, and 3000rpm off at redline, theres something else wrong |
im pretty sure that its only off at idle id notice a 3000rpm difference, i can live with it. its just id like the satisfaction of being abled to look at my tach to see a normal idle out of my now only seven
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