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TACHO PROBS AGAIN
Posted: Wed May 04, 2005 9:55 am
by bilby
ok my tacho pulses with out the engine changing revs
now its doing it while under load 2000rpm it drops 100rpm up and down slowly
COULD THE COIL BE SHAGGED ????
it only does this when the car is cold til running temp then
it sorts it self out
ignition
Posted: Sun May 15, 2005 11:02 pm
by mav
hi is it electronic ign? it could be the ignition module or if it is points it could be the condensor or the points.
Re: ignition
Posted: Tue May 17, 2005 2:23 am
by bilby
mav wrote:hi is it electronic ign? it could be the ignition module or if it is points it could be the condensor or the points.
yep has a pirana elec ignition in it
is there anyway to test if its on the blink ?
Posted: Tue May 17, 2005 7:21 am
by phippsy
I got an old aftermarket tacho somewhere at home, would it work to hook it up and see if it has the same problem? It worked fine when I pulled it out of my old car.
terminals
Posted: Wed May 18, 2005 10:30 pm
by mav
try checking the terminals make sure there tight and clean. what triggers the ignition on the pirana system ??
Re: terminals
Posted: Thu May 19, 2005 12:54 am
by bilby
mav wrote:try checking the terminals make sure there tight and clean. what triggers the ignition on the pirana system ??
not quite sure to be honest
Re: terminals
Posted: Sun May 22, 2005 7:52 pm
by mav
bilby wrote:mav wrote:try checking the terminals make sure there tight and clean. what triggers the ignition on the pirana system ??
not quite sure to be honest
it should be hall effect or optical.
Posted: Thu Jun 02, 2005 1:43 pm
by EricB
I had a similar thing but my tacho dropped quickly and then went back to normal. It ended up being my points and after installing my pertronix ignitor ignition, all fixed.
PS. I first replaced my coil with no change.