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How do I troubleshoot the dead tachometer?
#2
im sorry what car is this, 8v, 16v, (89 or 95 year)? i forgot...... which of the 3 generations of sidekicks.
ignore the tach, just trust, code 12 cranked,
no code 41/42 , checked off, good.
spark good, bingo.
if suppressor is there, and plugged in, it's good, they cant fail, no way, for a resistor and small cap to fail there.(inside,)

my be bad tach, but if the tach sorted you'd get code 41s. for sure.
Noid lamp tests failed on all 4 injectors (16v answer)
if the noid test failed the next test before condeming the ECU, (fuses all good)
is THE TPS.
the TP pin must not be at 4v or more, 3.5? or more or the ECU cuts fuel (1 more feature ) this is the unflood mode, and does this is the TPS ground is cut. (open)
there is no ignorance here, please..... be good to self !!, this is arcane, ECU logic. , dont worry , we can fix it, (find it)

to get injection , you need only have good tacho wire, (brown tach wire pulses, aka: code 41 pulses, YOU DO HAVE THEM, your tach is old and slugish, no surpise there)
and TP must read, 1v (about)
and have fuel pressure.
and The NOID must flash.
and last the injector must not be clogged.
if all that is good, the ECU is bad or you lost 12v to the injector (16v answer) 8v, has 2 wires, and both pulse and love to fail. bad ECU on 8v if either injector wire is dead and NOID is dead.

please post car spec... year and if below 1996 , 8v or 16v.

Lets do it !!
http://www.fixkick.com
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RE: How do I troubleshoot the dead tachometer? - by fixkick - 01-26-2014, 05:41 AM

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