Question about 1998 Volvo C70

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C70 coupe won't start

I have a C70 manual coupe that will no longer start. I don't think its the battery as everything still works in the car (the lights go on/radio/etc. when I first try to start the engine). I thought that it might just need a new key but that doesn't seem to be the problem. If I jiggle the key around for a while it will start every so often, but if put my wheel lock on and then try to start the car, the key will actually go a full 360 degrees around as if it was broken. Does anyone know what is going on here??

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Well i would think just by what your saying about jiggling the key that its the ignition switch but lets not jump to conclusions,
start by getting a voltage meter, can find them cheap and they will help you tons, check the voltage of the battery. off it should be 12.5 minimum running should be 13-15 under a load (load meaning ac on full headlights on bright etc) if its lower than that have a local auto parts place check your charging system and or battery, , also clean and check the battery terminals a few minutes will save you a ton of headache down the line even if its a bad switch.
then move onto the diagnostic for the switch, for that you need to feel compitant enough to get the steering column cover off so you can access the wires to the switch, once you get to that point wiggle the wires while attempting to start it, maybe one of the solder points is bad. another item to keep in mind that might be bad if its standard is the neutral safety switch under the clutch pedal
also once you get to the wires for the ign switch, find a way to diagnose it, i would advise you on that but every car is different on wire colors and the way the switch works so look for a ignition switch diagnostic aid from a dealer or from online for the exact year make and model and go from there,
if you cant find one by the above means i might be able to find the information on that.
good luck!
also if you replace the switch you may need to reprogram the key if it has a chip inside of it just keep that in mind if it wont do anything after you swap it,. a good reputable locksmith should have a key re-programmer and should be able to tell you if its chipped just by the appearance of the key.

Posted on Jun 03, 2017


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