High idle on start is normal, so no worries there
SOURCE: Service Engine soon light, OEM code P0410
what codes were there stored????? do you remeber???? autozone only gives you the basics on the codes i can get in depth on these
SOURCE: 90 chevy 5.7L k1500 failed emissions
COULD BE A VACUUM LEAK TAKE PROPANE TORCH AND LEAVE OFF PUT AROUND ALL VACUUM POINT WHERE YOU SUSPECT COULD POSSIBLY LEAK ENGINE SPEEDS UP THAT'S IT WORTH A SHOT BEFORE SPENDING MORE CASH
SOURCE: Chevy Trailblazer Engine very loud when starting
it's too early to tell. i,ve never known a light to come on because of a thermostat.you need to see what code was stored. without knowing,im just guessing. but my first thought was a plugged up catalytic converter. that explains the low power,also fuel filter.
SOURCE: High pitch winding noise on cold start up.
Sounds like a constricted IAC Idle air control valve passsage. Fairly simple to fix. Remove air filter trunking all the way to the throttle body to allow access. The IAC allows air passed the throttle when closed at idle. Just on the inside of the throttle body in front of the throttle flap there is an opening in the throttle wall. This is the air inlet to the IAC; there is an outlet similar on the other side of the throttle. Use carb cleaner and cloth to shift the grime from this tubing and get it like new. Hold the throttle flap open to get at both ends of the IAC tubing. The IAC can be detached and cleaned to a shine. Reinstall the IAC and replace all air pipe ducting. Leave for about 20 minutes to allow any cleaner residue to dry out. When you restart you might experience a bit of uneven running but this will disappear very quickly as the last of the cleaner dries out
SOURCE: 2004 chevy trailblazer-Reduce engine power
You need to get the fault codes read to determine where the problem is that set the SES light. Autozone will scan your car at no charge. At some point you will need to get a mechanic involved to further diagnose the codes.
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