couldn find fault.....

Aug 14, 2004 10 Replies

So that when i let go of the key when starting up the engine it cut outs when it disengages the starter.



I wired + from battery direct to coil bypassing the ballast resistor, now would this over load the points? i wired a switch inbetween to cut off that feed so its not permanantly on, the second i flick it the engine cuts out, so i guess its getting 12v rather than 8-9v? when the starter is released.



I cant get a wiring digram thats 100% accurte for year and country. If anyones interested its a pretty rare 77 GT Celica race tuuuuuuuuuuuned.



thanks


With the ignition switched on, are you getting power at the ignition coil?

moray

On some cars (with low voltage ballast resistor system) the starter circuit supplies 12v to the ign system (to give a bigger spark). In the absence of normal ign. circuit the engine will start while the starter is engaged and stop when the starter circuit is released.

mrcheerful

dont think so, engine cuts on release of key

>

I changed the coil and resistor and another large resistor block from my other Celica and still didnt work, not until i wired direct from + battery to +coil.

Prior to that the second i let the key go back from cranking starter so it should still fire it cut off, didnt drive the car for 4 years but it did look like the tacho needle dropped quicker....maybe thats just me

>

well, it sounds as though you maybe have an wiring, immobiliser or ign switch fault or maybe a relay or fuse fault. you will have to go back to basics a nd find where you have power and where you don't.

mrcheerful

All you need to check properly is the cheapest of test meters, or a bulb and some wire.

no immobiliser and i checked and removed the barrel.

I dont have a wiring diagram for the year, im more worried at the mo if i will burn the points out.

>

done that where i could, no power to the coil although the red ignition light lights up although i think it would anyway even with a fault

You'll have to get an ign feed to the ballast resistor. If you run power directly to the coil it will eventually overheat and fail. Check all fuses, but it is possible that the coil isn't fused. Are you sure there's no immobiliser, when did the car last run ok.

This is a classic ballast resistor fault.

Bill

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