I have an '06 CMS with 88k. I recently replaced the harmonic balancer and then drove the car for approx 10 miles. Now the car will not start. I have replaced the starter and tested the battery (good) but still no start. When I turn the key I can hear the starter relay click but nothing else happens. It is an auto and I have tried starting the car with brake pedal pressed and not pressed. There were no starting issues prior to this. Any suggestions? Any and all welcome.

 

Does it crank and it won't start?

 

Recheck all of the electrical plugs you may have touched during the balancer install. Crank and cam sensors, distributor and spark plugs.

Check to see if any code is being thrown via OBDII.

Clicks but no crank sounds like something wasn't plugged back in. What guide / reference did you follow?

 

Did you try to jump start?

 

gumbedamit - No, click only. Not turning.

aboveliquidice - I have checked all plugs touched and not touched. Checked all other plugs I could get my hands on. No OBD II codes, engine won't get far enough to log codes. I used ModMini YT video as go-by for harmonic repair.

bansasn - Jump does not change symptoms.

UPDATE: Replaced starter just to be sure, no change. Key off 0V to starter, key on 9.5V on small wire to starter, key to start 0.5V on battery wire to starter. Cleaned and tightened every ground point I could find. Battery load tested and checked OK.

 

IT'S A MIRACLE!!!!!!

I put the car in service mode and began checking every nut, bolt, plug, and connector. I removed and re-installed the alternator, starter, A/C compressor (kept A/C lines connected), and rad fan shroud.Checked the belt and tensioner. Did not find anything loose or unplugged or not connected. Then I put everything back together. AND, the car started.

No check engine light, no OBD II codes. Runs smooth, normal 4banger vibrations, good throttle response.

I'm befuddled.

 

Probably just a loose ground or connection that was coincidental to the work you did prior.