Question about 1990 Honda Accord
Its a sensor located on the programmed fuel injection
So, there's a few things to do to fix this. There is the air boost valve, which is on the driver's side of the the intake plenum.. They get a hole in the internal diaphragm, which causes idle surging. Replace it or buy a block off plate from ebay and remove it and block it off. Second is your FITV (Fast Idle Thermal Valve), which is on the front of the same plenum with two vacuum hoses leading to it nearest the driver's side. You can remove the top of it and tighten the seal inside with a flat head carefully until it's fully seated, as that seal backing out causes idle surge. Third is your Electronic Air Control Valve, which is next to the FITV and has a black solenoid looking top. Remove that, pull the gasket off of it and soak it in parts cleaner to get all the gunk off of the screen and passages. Replace the gasket and reinstall. Also clean the throttle body with throttle body/carb cleaner and replace the gasket. After you do all 4 of these and make sure the new seals/gaskets are installed and everything is done right, bleed and feel your coolant system, then disconnect your battery for a few minutes to reset your computer. When you restart the car, let it idle without touching the throttle until the radiator fans come on, which will tell you that your computer is now reset (You have to do this to let the computer relearn the idle pattern.)
Here's a link to show you what to do in case any of this confused you:
Posted on Feb 05, 2013
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Posted on Jan 02, 2017
can be in about three different locations under the hood or inthe boot behind one of the panels or in the driver or passenger footwell behind the panels should have a picture of an engine at its location.
Posted on Oct 27, 2008
It is what you call hunting. Carb or throttle body injection?. more than likely TBI. Could be the throttle position sensor,The mass air flow sensor, fuel pressure regulator. have the fuel pressure ck'd first.. then the throttle position sensor. then the maf sensor. Have the maf sensor cleaned, They are very expensive. Make sure the air cleaner is clean, clean. it and the maf work together. - good luck, Ned
Posted on Jun 23, 2009
SOURCE: oxygen sensor replacement
you need to rent an 02 sensor socket and use a ratchet and the socket to remove it, there are two on the exhaust pipe one before the cat, you can see it on the exhaust pipe and one after. normally the 1at one goes out. cost $75.00 please rate if helpful.
Posted on Aug 14, 2009
Testimonial: "it was very helpful! thanks"
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