Where do you find the EGR on a 1990 Acura Integra?
== == == == == == == == I have a 1991 and the Haynes manual only shows the removal/installation of the EGR valve on the Legend models. What I find odd though is that there is an EGR part for the 90 - 93 Integra and it's not cheap. The only thing that the manual says is that you should refer to your VECI label located under the hood to see if your vehicle has an EGR valve. All other illustrations are shown from a Legend.
Sounds like it is your EGR Valve (Exhaust Gas Recirculation). There are clean kits for these valves. When the EGR Valve is going bad your engine rpms will sometimes vary as much as 1 gran up and down. At least it does it on my 91 Acura Integra RS 5-Speed. New they are anywhere from $157 - $225. Pretty easy to replace. Most of the kids I know that have the B18A engine replaced the…
The EGR valve is located on the intake manifold right at the rear passenger side corner of the cylinder head. It has both vacuum and electrical connections to it. Also identifiable as having a long vacuum hose running from the EGR valve directly to the EGR control unit which is a large black box mounted to the firewall behind the ABS pump.