Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, '03 CTS won't start, crank, or turn over -- CPS or starter? in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I have an '03 CTS with 119k miles on it. Suddenly today it won't start. I turn the key, I ...
'03 CTS won't start, crank, or turn over -- CPS or starter?
I have an '03 CTS with 119k miles on it. Suddenly today it won't start. I turn the key, I can hear a relay or two clicking, some whirling and buzzing sound in the engine but nothing else. Battery shows 12.4 volts, lights etc are working. I do have two codes that are related to the crankshaft position sensor: P0335 and P0341 but I have gotten these intermittently for the past year. And I've read here that if it doesn't even crank, it's not the CPS. Makes sense to me. But since that starter really doesn't look too fun to get at to replace, I want to eliminate other possibilities first.
By the way, it looks like I have to remove the Cat to get to the starter -- are those bolts very difficult to get at and get off? I imagine they can be seized up pretty good with all the heat.
Re: '03 CTS won't start, crank, or turn over -- CPS or starter?
When my CPS failed, it would crank (starter would turn the engine over) but would not start. I did have a couple of instances where the car did nothing (during the time the CPS was failing, before I changed it), but 95%+ of the time, it would simply crank and not start.
I also ended up changing the cam position sensor. I had recurring CPS codes (even with a new CPS) until I changed the timing belt and cam sensor. Since then, no codes (for that, anyway). If you're hearing a click-whirr, it very well may be the starter. Spray Liquid Wrench on the exhaust manifold bolts on Friday night, take it apart Saturday morning. Should come apart just fine.