Tach/trailing coil
05-21-04, 02:03 PM
#1
Tach/trailing coil
My tach suddenly decided that it's only going to work about 80% of the time. Does this mean my trailing coil is dead/dying? About the same time this started the car decided that it wanted to flood easily/ stall at idle....
if it DOES mean my trailing coil is dead, WTF? I've replaced it 3 times allready. Am I just getting bad replacements and should go buy a new one? does anyone know why they fail, and if they can be rebuilt?
if it DOES mean my trailing coil is dead, WTF? I've replaced it 3 times allready. Am I just getting bad replacements and should go buy a new one? does anyone know why they fail, and if they can be rebuilt?
05-23-04, 12:03 PM
#3
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I'm betting that it could be your starter or battery.. I had a situation where I would start the car, the tach would work for a split second and then just die when I first fired up the car.. As it turns out, I had a bad starter.. the starter caused me to have slow cranking speed.. fast enough for the engine to crank and fire up, however, slow enough that the ECU would think the car didn't start and so cut firing on the trailing coil, which of course killed the tach... The ECU needs to see a min ammount of rpm when the car turns over.. I know this may seem a little far fetched, however I verified this by replacing the starter and then putting the old one back in...
05-24-04, 03:23 PM
#4
hmm... I never thought of that! Interesting idea. 
It might have something to do with the way I unflood it too... lately it's been pissy to start unless I hold it at WOT when cranking.. but if it gets flooded I have an assistant pull the fuses while cranking and then put them back in, and it'll fire right up.
Come to think of it, that's the only time that the tach ever stopped working... that must be it!
It might have something to do with the way I unflood it too... lately it's been pissy to start unless I hold it at WOT when cranking.. but if it gets flooded I have an assistant pull the fuses while cranking and then put them back in, and it'll fire right up.
Come to think of it, that's the only time that the tach ever stopped working... that must be it!
05-24-04, 05:34 PM
#5
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Check your grounds, also check your connections at the trailing coils and its capacitor ( condensor) .47 250 v.Its bolted on the strut tower.If this condensor is bad it makes the car die and also your tach to act crazy.
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