This is actually a 2003 Matrix, but sister cars so I hope you can help.
I bought a 2003 Matrix with a blown engine and did a complete rebuild, bearings, rings, reconditioned head, pretty much the works. Kind of stupid to rebuild a 1 ZZ FE, but I never did one before so I figured I’d give it a try.
Warmed up, it purrs like a kitten, but cold starts are hard and it won’t idle until CTS reads 200F. The IAC and CTS are new. MAF is original but I cleaned it and I tested it on another car. Any suggestions to get a good idle are appreciated.
Bill