EGR Problem
EGR Problem
After doing a little bit more research into this problem with my 1990 240SX, I believe my problem to lay in the metal piping between the EGR solenoid valve and the BPT valve; from what I can see in the FSM, the only break in continuity in that section of metal piping is a "T" connector that goes to the carbon canister. Does anyone know where this "T" is located? I'm going to take a lot of the intake off tomorrow in an attempt to find the problem, but if anyone can pinpoint the location, I'd appreciate it. Hopefully, it's just a simple loose/broken connection that is the source of all my EGR problems . . . :-)
I believe you're right with regard to the "T"; the connection from the EGR solenoid valve to the BPT valve works fine when connected directly, however when connected through the metal tubing, the T should exist between the two connection points. I'll be sure to follow what you said, hopefully, it'll work out . . . thanks for the reply!
Sure enough, the problem was a hose that was connected to the wrong piping, coming from the carbon canister. Reconnected, took it for a test run, CEL off. Finally, I hope I got it. :-) Thanks for the help, much appreciated!
P.S: Oh, and it's a lot easier to do all this, including taking the EGR solenoid valve out for testing, if you remove the intake from the throttle body back to the MAF sensor. :-)
P.S: Oh, and it's a lot easier to do all this, including taking the EGR solenoid valve out for testing, if you remove the intake from the throttle body back to the MAF sensor. :-)
To the best of my limited knowledge, the EGR system can be disabled by removing all the EGR valves (solenoids, etc), along with the BPT valve, and plugging the ports to which their hoses are connected. This may trip the CEL (Check Engine Light), especially on California models, but your engine will probably not suffer any ill effects from it. Oh, and a FSM is a Factory Service Manual . . . eBay was the source for my $20.00 one. :-)