Mechanical Problems & Technical Chat If you've got a problem you just can't figure out, a noise you can't diagnose, or a check engine light that won't go away, ask about it here!

D16y7 idle surge

Old 05-03-2019, 03:54 PM
Junior Member
Thread Starter
Join Date: May 2019
Posts: 1
Default D16y7 idle surge

-Little Background, bought a 98 DX Hatch about 2-3 months ago from the original owner. Car ran very smooth with exception of the speedometer and tachometer not working and CV axles clicking.
-He only had receipts for timing belt, clutch, and ďsealsĒ. Iím assuming he didnít do much maintenance but everything checked out.

-About two weeks I ran a can of spray Seafoam through the car to clean up any buildup.
-On Sunday driving home from work a CEL popped up for IACV.
-Cleaned TB and IACV, new TB gasket. When I started it back up Idle was surging between 1500-2000
-Car had absolutely 0 idle issues before I took off IACV and cleaned it.
-Went ahead and bought a new IACV and continuing to surge after installation
-Sprayed around TB for vacuum leak and nothing changed. -Put my finger over the hole in TB and nothing changed.
-I did not touch the idle screw and the cable does have about 1/2 if slack
-The butterfly valve is completely closed.
-Have yet to bleed coolant. but before I took anything off and engine was dead cold I checked coolant in the radiator and it was already topped off.

I did here a bit of a whistle while engine was surging around throttle body area.

Have yet to try..
Using multimeter on TPS
Spraying around IM.

Any other advice? Iíve read many of the forums regarding this issue but not much help.

Thank You
Related Topics
Thread Starter
Last Post
Mechanical Problems & Technical Chat
10-21-2014 07:29 PM
Mechanical Problems & Technical Chat
06-14-2011 08:09 AM
Engine & Internal
04-14-2009 02:31 PM
Mechanical Problems & Technical Chat
06-15-2007 06:07 AM
Mechanical Problems & Technical Chat
04-25-2007 06:57 AM

Thread Tools
Search this Thread
Quick Reply: D16y7 idle surge

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.