Major idle surge issue

1994 HONDA ACCORD
168,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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JAY9913
  • MEMBER
  • 1 POST
My idle jumps from 700-1700 repeatedly. I have replaced the IACV and the MAP, thermo valve and the throttle body, yet I still get surging idle. I have pretty much replaced everything.
Mar 18, 2021 at 12:42 PM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
More then likely you have a vacuum leak. However, here is a guide that will get us started on this issue:

https://www.2carpros.com/articles/engine-surges

If you need more info on how to check for a vacuum leak, follow this guide:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let's run through this info and we can go from there. Let me know if you have questions. Thanks
Mar 19, 2021 at 11:40 AM
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