I agree! Cleaning can make a big difference. Also, using a multimeter to check the resistance of the IAC can help you spot if it’s faulty.
Have you guys noticed the IAC valve can be pretty sensitive? Sometimes just disconnecting it and reconnecting resets it. Worth a try if you’re having idle problems!
That’s so true! And don’t forget to check the electrical connectors for any corrosion or damage. Poor connections can lead to erratic idle issues.
Visual inspection is key! If you see any signs of wear or a sticky valve, it might be time for a replacement. Bad IACs can cause high or erratic idle.
Definitely! Also, I highly recommend checking it with a scanner to read any codes. Sometimes, it’s not just the IAC but related sensors that are faulty.
What are the typical symptoms you guys have experienced? Mine tends to idle high when cold and drops when warmed up. I suspect the IAC but want to be sure.
You can use a simple multimeter to check if the IAC is functioning within spec. Make sure to check the ohms when it’s connected to ensure accurate readings.
That’s a solid tip! Don’t forget about voltage tests too; that can really indicate if the IAC is getting power.
I’ve had both electrical and mechanical issues with my IAC. It’s frustrating! Sometimes a simple fix isn’t enough, and it just needs to be replaced entirely.
Totally get you! It’s always good to have a backup plan if cleaning and testing don’t help.
Just a reminder: when you’re testing, always make sure the vehicle is at operating temperature for accurate results! Can’t stress that enough!
That’s a great point! I often forget that and end up with confusing readings. Thanks for the reminder!
For a laugh, I once changed my IAC without actually needing to. It just turned out to be a loose vacuum line! Learn from my mistake, everyone!
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Oh man, that’s classic! At least you got a new part out of it, right? It’s always good to check the basics first!
When dealing with IAC valves on the 5.7 Vortec, common symptoms include rough idling and stalling. A good first step is to check for any error codes using an OBD-II scanner.
Cleaning the IAC can certainly help. But if it’s beyond that, replacement might be necessary. Anyone know the best brands for replacement IAC valves?
I’ve had luck with AC Delco valves. They’re OEM, so they fit perfectly. But always check reviews for any product you’re considering.
I think going OEM is a smart choice. They might cost a bit more, but they save you from headaches down the road.
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DIY cleaning can be simple! Just remove it, soak it in some throttle body cleaner, and use a soft brush. Just be careful not to damage it!
That’s great advice! But if I mess it up, are there any good shops that specialize in this? I prefer to do things myself but need a backup plan.