javi805

Ok i got codes p0335 and p0336. I changed the crank position sensor twice. Checked all wiring and everything was ok. The car would turnon but it would lag if you would try and rev. it would bogg alot. sounded like it was missfiring. Sounded like it was gonna turn off while idle. So today I took off the timing cover and saw that the chain was loose. this is my last attemp to fix it. so i hope this will solve the problem or imma sell it. Could that be the problem tho? Any other tips will help thank to you

RamAir95TA

What is your definition of "loose?" How much play side-to-side? Typically stock chains are NOT tight however this normally isn't a problem. Also any problems with the CKP sensor won't cause any adverse engine running conditions so your misfire/stumble are not related to the SES light.

Misfires are difficult to diagnose over the internet, but I would start with the basics. Check your wires for arcing (at night, look for sparks), check plugs and wires, and check fuel pressure.

Z28SORR

Did you pull the cap on the opti and check the rotor?

javi805

Ya and it's fine