Idle Air Control Valve
This is an aftermarket replacement idle air control (IAC) valve for your 1986-1991 Vanagon waterboxer. If you are unsure how to test your existing part to see if it's bad, read the following article: Idle Control System: 1986-91 Vanagon
Fit note: The housing on this valve onto which the hoses connects is slightly different than the original valve, but there is plenty of flexibility in the hoses and it fits just fine.
Before you buy: We've found that a poorly responding Original Equipment (OE) IAC valve can often be revived with some strategic cleaning. Remove the OE valve and spray some carb cleaner into the bore, then use a screwdriver to actuate the piston back and forth a few times, taking care to not scratch the sealing surface of the piston while working the cleaner into the valve. If your OE valve didn't improve with cleaning, our aftermarket valves are a high quality replacement.
Installer beware: Changing out any one part of your EFI system that is faulty with a new or rebuilt part may cause worse running because other settings may have changed over time to compensate for the faulty part you are replacing. Following the base-line settings procedure in the Bentley manual is required after installation. Also please read our return policy related to electric and electronic items.
Installation note: Please keep in mind that this part may not solve your idle issue, but it certainly doesn't hurt to replace it. It is often challenging to diagnose a Vanagon running issue, because these vehicles don't have modern on-board diagnostics. If you plug in this part and it does not fix your issue, you still own the part. Click here for more information about returning electronic parts.