What could cause multiple TPS's to go bad? (S4 n/a)

need RX7 · 12-13-2008, 08:02 PM

One thing I'm starting to suspect is the BAC. I read somewhere that the idle should drop if you unplug the BAC (makes sense.) I went and unplugged mine while the car was doing its pulsing idle thing and nothing happened, absolutely nothing (no drop in revs, didn't skip a beat in its pulsing).

Also, while the car was running, I unplugged the boost sensor. Nothing happened when I unplugged it, but when I went to plug it back in, the idle would smooth out for 2-3 seconds as I inserted the plug, but would go right back to pulsing.

Interestingly, the dealership tested one of my junkyard ones and said was good... I wish I knew someone else around here with an S4 FC to try it out on.

I'll try to get a video of my problem tomorrow (I'm sure the neighbors wouldn't like it if I went out right now and started up the FC with no exhaust connected

)

12-13-2008, 08:02 PM	#2
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	One thing I'm starting to suspect is the BAC. I read somewhere that the idle should drop if you unplug the BAC (makes sense.) I went and unplugged mine while the car was doing its pulsing idle thing and nothing happened, absolutely nothing (no drop in revs, didn't skip a beat in its pulsing). Also, while the car was running, I unplugged the boost sensor. Nothing happened when I unplugged it, but when I went to plug it back in, the idle would smooth out for 2-3 seconds as I inserted the plug, but would go right back to pulsing. Interestingly, the dealership tested one of my junkyard ones and said was good... I wish I knew someone else around here with an S4 FC to try it out on. I'll try to get a video of my problem tomorrow (I'm sure the neighbors wouldn't like it if I went out right now and started up the FC with no exhaust connected ) __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress. Last edited by need RX7; 12-13-2008 at 08:13 PM.

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