Troubles With My CAI On A 2000 Ford Focus.
Posted in Car Batteries | Asked on Apr 28, 2010
My engine keeps dying after about 4-5 secs of being turned over or not giving it gas with my spectre CAI on. I have put my stock filter back on and everything works fine. When I put my CAI spectre performance intake back on it does the same thing. I got my engine runing and I could drive it for a little while with my spectre CAI on, and my MAFS out and lying on the snorkle, but the next morning the engine would die after not giving enough gas or 4-5 secs just sitting at a stop sign.
Notes (in case you just want points for answer something that has already been checked): My battery runs at 12.3 volts on/off my car (which means batt is fine), My car turned over runs at 14.1 volts (which means alt is fine), I have taken the starter off at autozone (workplace) and it tested Good! My mass air flow sensor (MAFS) is fine with my stock tube/filter/housing (which means MAFS is fine) Thanks for your help if you decide to post.
There are 2 Answers for "Troubles With My CAI On A 2000 Ford Focus."
Sounds like there may be an air leak which is letting air in that the MAF can’t sense so the computer can’t regulate the fuel properly and she dies. Seems logical because you say it will run if you give it gas. Either that or the computer simply can’t deal with the extra air flow at idle. The computer may need an update.
If you have or know someone with a scanguage, hook it up and see if you can get a reading on the fuel air mixture. That might give you some info to help diagnose the problem.
I have had the same problem if you would to connect MAF sensor to any non-OEM intake system. The sensor is reading a certain amount of air entering the intake manifold. If the preset limit is beyond what the MAF sensor could read in terms of engine running near lean, then
the ECU will shut off the engine to prevent damage to the engine.
YES, damage caused from preignition can cause much of the same effects as misfiring. My advice is get rid of the “CAI” and keep your “OEM”. you’ll get more from your engine could handle than what your engine could not handle.