IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

03 IS300 turns off wont start after engine warms up

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Old 10-11-13, 04:13 PM
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AAIspy
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Angry 03 IS300 turns off wont start after engine warms up

I just replaced the camshaft position sensor as that was the code that came up P0341... the car will start fine when engine is cool, run fine, and everything.. Once heated up after 10 - 15 minutes of driving it will just shut off and not start again. It wants to start, has plenty of battery power and cranks just fine but will not start. After it cools, it starts just fine and acts like nothing is wrong ???? After cooled off the engine light does NOT come on, but does after it stalls and wont start again. After I replaced the CSS, the engine light was gone again, so I was hopeful that I fixed it, but after going for test drive it did same thing, shut off while stopped at a stop sign.

Again, I just replaced the camshaft position sensor, so I don't think that is the issue, unless the new one is bad and come on, what is the possibility of that ?

Any help/advise will be much appreciated. It also threw a code of input shaft speed sensor, but again, after cooling off and restarting and after replacing teh CSS, no engine light came on until it shut off again.

Thank you !
Old 10-12-13, 05:11 AM
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MasterKwan
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Again, I just replaced the camshaft position sensor, so I don't think that is the issue, unless the new one is bad and come on, what is the possibility of that ?
New parts don't equal good parts. It's not uncommon for new parts to be bad. Rare sure but, I wouldn't say never.

You need to find out what's going away when it won't start. Fuel, Spark or both. You have a crank position sensor too.

if I was in your shoes, I'd probably get a can of carb cleaner. When it won't start, I'd spray some carb cleaner into the intake. Maybe through the PCV air inlet hose (between the MAF and the throttle body). You don't want to get carb cleaner on the maf. Then see if it'll start. If it will, (starts and then stalls out) it's a fuel problem. If it won't, it's probably a spark problem.

You've got an igniter on the strut tower that makes the coils fire. Not saying change it but, if you determine the problem is spark, it's probably the ignitor or one of the crank/cam sensors. If it's a fuel problem, it gets hairier to check.

Last edited by MasterKwan; 10-12-13 at 05:26 AM.
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