Hello friends, I'm having problems with a rover which has a pulse on the injectors but has no spark. it is more the coil heats too much and when controlling the feeding of the same one it arrives the tension to him of the battery and in the one of permanently negative pulse and I think that is for it that it does not generate spark and heats the coil, I would appreciate if somebody could guide me.
hello, you do not say what year the rover is, but it's usually ckp sensor (crankshaft position sensor) it takes the spark signal to the computer (cpu) and from this the signal goes to the ignition coil, check the circuit's involved, most likely it is cut to negative.
Do the checks Marcorvett points out, if that is correct, what can be checked is the coil, these usually get hot especially if the contact remains in ignition (dash lights on), it should not be heated excessively. a component test with multitester checking the resistance of the Primary coil 0.6 ohm and secondary 17 ohm, are referenced values extracted from chevy corsa, but should be close to these values.
The coils are also heated when the wiring and / or spark plugs have too much resistance, this causes the charging time of the primary to rise and generate temperature.
Test with spark plugs without resistance something like Champion 9yc, but first check as it says in the post at the beginning of the CKP.
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