rb20det question

Post by **sen-pai** » Thu Sep 15, 2005 6:36 pm

well i have a 93 240sx with an rb20det in it and it has been running fine until now. the problem i'm having is when i start it up to warm it up it is fine but then today after running for about 5 minutes it just started idling from 700 - 1500 and back down and up... then finally it just died. waited like a minute then started back up ran fine... got home no problem.. then when i got home i restarted it let it warm up again after letting it sit for about 5 hours... same thing occured revved up then down then died. the only thing i have done diff in last couple days was flush the radiator... and i tried to get as much air out as possible but i think there might still be some in there... would that cause this problem? thanks

Post by **krayton** » Thu Sep 15, 2005 7:25 pm

check O2 sensor

Post by **sen-pai** » Thu Sep 15, 2005 8:24 pm

is there a certain o2 sensor i would need if it needs replacing... but also if i have air in the coolant lines will it effect my idle?

Post by **Carl H** » Fri Sep 16, 2005 1:03 am

sounds more like an improperly set tps.

Post by **rbsileighty** » Fri Sep 16, 2005 4:47 am

Carl H wrote:sounds more like an improperly set tps.

I agree with Carl... common problem with the 20...

Post by **sen-pai** » Fri Sep 16, 2005 2:39 pm

so what do i need to do to correct it

Post by **sen-pai** » Mon Sep 19, 2005 6:15 pm

any1?? said it might be improperly set tps how do i correct it... i'm new to this whole thing... also should i rules out my iacv?

Post by **Carl H** » Tue Sep 20, 2005 4:39 am

you need to get a multi meter with continuty on it.....unplug the grey plug that is on the tps and check pins 2 and 3 for continuty, if there is none when its closed then the idle switch isnt closing right.

Post by **sen-pai** » Tue Sep 20, 2005 8:01 pm

cleaned iacv, changed spark plugs, cleaned throttle body, checked coil packs, checked tps, everything is great but still having same problem... now the car at operating temp still fluctuates idle and then dies or sometimes just dies... but then i can start the car right back up ... weird

Post by **SeVa-S13** » Wed Sep 21, 2005 1:27 pm

Checked your oil? Any smoke in your exhaust?

Post by **sen-pai** » Wed Sep 21, 2005 3:35 pm

oil fluid is good..... no smoke

Post by **apex_7** » Thu Sep 22, 2005 7:39 pm

Mine did the same thing and the IAC was bad, so I bypassed and blocked the IAC and the AAC and made my own idle control valve. Not saying that's the problem, but you might take it off and shake it. If it sounds like there is something rattling inside, then it's probably bad.

Post by **sen-pai** » Thu Sep 22, 2005 8:09 pm

how'd u bypass

Post by **95hondakillr** » Sun Sep 25, 2005 3:04 pm

Sounds like its loading the plugs up at idle. Dont know though had an sr that did that so just thought id put my .02 in ; )

rb20det question

rb20det question

Re: (Carl H)

Re: (sen-pai)

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