Weird boost problem FD3S JDM
11-27-11, 06:41 PM
#1
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Weird boost problem FD3S JDM
Hi, all
I've installed a boost pressure gauge and the rest of gauges, and today i 2 problems:
boost spikes: i took my car for a short ride 1st to test boost pattern... and i found it... sometimes I'm getting peaks of 0,9 bar!!!! at wot.. i tried to make a video to show you... so as far as i know my maximum boost should be 0,7 bar and my boost pattern 0,55 / 0,7 bar... but im having a real weird boost pattern
oil temp too low: after a short spirit ride to check boost pattern my oil temp was 29º celsius (84 ºF) water was 63 ºC (145 ºF) on highway just after pushing when I've arrived to home after parking and ready to shut down car temps were oil 35º celsius (95 ºF) water 84 ºC (183 ºF)
I was thinking that maybe there is a problem with oil temp sensor.. so i took the oil dipstick... to check if oil was cool or heat... and surprisingly... oil was touchable.. just a bit warm...
I've made a short video to show you the boost pattern, please help me!
http://www.youtube.com/watch?v=rJ3BO_mJmxU
i don't know how to insert videos please check above link and thanks!
I've installed a boost pressure gauge and the rest of gauges, and today i 2 problems:
boost spikes: i took my car for a short ride 1st to test boost pattern... and i found it... sometimes I'm getting peaks of 0,9 bar!!!! at wot.. i tried to make a video to show you... so as far as i know my maximum boost should be 0,7 bar and my boost pattern 0,55 / 0,7 bar... but im having a real weird boost pattern
oil temp too low: after a short spirit ride to check boost pattern my oil temp was 29º celsius (84 ºF) water was 63 ºC (145 ºF) on highway just after pushing when I've arrived to home after parking and ready to shut down car temps were oil 35º celsius (95 ºF) water 84 ºC (183 ºF)
I was thinking that maybe there is a problem with oil temp sensor.. so i took the oil dipstick... to check if oil was cool or heat... and surprisingly... oil was touchable.. just a bit warm...
I've made a short video to show you the boost pattern, please help me!
http://www.youtube.com/watch?v=rJ3BO_mJmxU
i don't know how to insert videos please check above link and thanks!
11-28-11, 03:39 PM
#2
I've never measured my oil temps, so I can't comment on those.
Maybe I missed it, but what was ambient temperature and exactly where are you measuring the coolant temperature?
As for the boost issue, I really l couldn't make much out of your video. What are your mods?
Here's a couple of links that might help you narrow things down.....
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/why-engine-so-damn-complicated-part-1-sequential-turbos-demystified-841821/
http://www.autosportracetech.com/RX-7/rx7stuff.htm
Maybe I missed it, but what was ambient temperature and exactly where are you measuring the coolant temperature?
As for the boost issue, I really l couldn't make much out of your video. What are your mods?
Here's a couple of links that might help you narrow things down.....
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/why-engine-so-damn-complicated-part-1-sequential-turbos-demystified-841821/
http://www.autosportracetech.com/RX-7/rx7stuff.htm
