2007 Yaris Hatchback overheated - Toyota Yaris Forums

BillYar · 06-30-2015, 08:35 AM

My Yaris overheated and died on the road. The belt for the AC, alternator, and crankshaft broke. Had it towed back to my house. Put on a new belt and changed the spark plugs, added coolant to the reservoir until it filled the overfill tank to max. It won't start. It turns over, the crankshaft pulley, AC, are all turning. Any ideas? I hope I didn't fry it. I had an overheat idiot light go on but it went off, I kept driving. Guess I'm the idiot. I've read posts here for starting problems and they say to change out the crankshaft position sensor. Any other thoughts? Thanks

tmontague · 06-30-2015, 08:42 AM

Is it cranking? I'd run a compression test, it's possible that the head is warped and/or the head gasket is toast and you aren't getting enough compression.

That being said, it would likely still start and you'd have problems come up afterwards. A bad cps will cause a no start. A mechanic w/ a good computer can diagnose a bad cps by seeing if their diagnostic computer is giving rpm readings while the car is cranking. I though that was my issue a while back until it ended up being a bad ground on the ignition loom

BillYar · 06-30-2015, 09:46 AM

Thanks! I've ordered a CPS. Will try that. Maybe I'll get lucky. Didn't want to pay to have it towed to a mechanic.

06-30-2015, 08:35 AM	#1
BillYar Drives: 2007 Yaris Join Date: Jun 2015 Location: Colorado Posts: 3	2007 Yaris Hatchback overheated My Yaris overheated and died on the road. The belt for the AC, alternator, and crankshaft broke. Had it towed back to my house. Put on a new belt and changed the spark plugs, added coolant to the reservoir until it filled the overfill tank to max. It won't start. It turns over, the crankshaft pulley, AC, are all turning. Any ideas? I hope I didn't fry it. I had an overheat idiot light go on but it went off, I kept driving. Guess I'm the idiot. I've read posts here for starting problems and they say to change out the crankshaft position sensor. Any other thoughts? Thanks

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06-30-2015, 08:42 AM	#2
tmontague View User's Garage Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012 Location: Caledonia Ont. Posts: 2,938	Is it cranking? I'd run a compression test, it's possible that the head is warped and/or the head gasket is toast and you aren't getting enough compression. That being said, it would likely still start and you'd have problems come up afterwards. A bad cps will cause a no start. A mechanic w/ a good computer can diagnose a bad cps by seeing if their diagnostic computer is giving rpm readings while the car is cranking. I though that was my issue a while back until it ended up being a bad ground on the ignition loom

06-30-2015, 09:46 AM	#3
BillYar Drives: 2007 Yaris Join Date: Jun 2015 Location: Colorado Posts: 3	Thanks! I've ordered a CPS. Will try that. Maybe I'll get lucky. Didn't want to pay to have it towed to a mechanic.