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fd3smaniac
Apprentece
5 Posts |
 Posted - May 14 2007 : 01:46:52 AM
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the engine is an S5 4 port street ported NA with a TII turbo.
it has an SAFC, 255 walbro, 550 injectors and the car is fine besides the fact that the damn thing shuts itself off after about 10 minutes and wont turn back on untill its fully cooled down, and then runs again till it feels like shutting down.the only thing i can think of is the ECU its still the same s5 NA ECU. is this something electronic or no? i thought about an ESM to trick the MAP from seeing the spike in air but someone tried to tell me the ECU wont even recognize that, im very confused, any help is very much apreciated seeing as this is the only forum that i know of with turbo NAs |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 14 2007 : 09:15:30 AM
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My guess is that it is heat related. Heat or vibration is causing an electrical issue. Once it shuts down, go through the standard checks for fuel and spark. That way you can determine if the ECU is still functioning.
Also, it's a bit rude to post a topic and then beg for a response via email. |
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fd3smaniac
Apprentece
5 Posts |
Posted - May 14 2007 : 2:29:10 PM
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| sorry i just wanted to make sure that u seen this thread, since u are the only one i know of that has extensivly gone through this whole NA turbo set-up. but i can tell you this, the fuel and spark is not the issue, that has been checked. do you think that i should switch to an S5 tII ecu and MAP? |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 15 2007 : 09:40:45 AM
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| If you have fuel and spark, the car should run. Swapping to the TII ECU and AFM won't change that. |
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fd3smaniac
Apprentece
5 Posts |
Posted - May 15 2007 : 2:40:11 PM
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| well i know that if the NA MAP sensor sees a spike in air, it will shut fuel off to the rear rotor, so i guess fuel could be the problem, but caused by the MAP. i dont really know obviously, im just taking guesses trying to get as much info as i can before i start dumping money into this, and so far im the only one that has had this problem |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 17 2007 : 09:24:44 AM
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The NA MAP sensor has nothing to do with it. It will NOT shut fuel off to the rear rotor.
It's a heat related issue. Warm up the car until it shuts down, then test the CAS as per the factory service manual.
It is very difficult to remotely troubleshoot electrical problems. Also, DO NOT USE THE FORUM'S EMAIL FUNCTION TO EMAIL ME. You've already done this TWICE, and cross posted this topic to several subforums at the main RX-7 Club forum. This is considered very rude. |
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fd3smaniac
Apprentece
5 Posts |
Posted - May 22 2007 : 5:25:46 PM
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sorry about the e-mail thing man.... calm down really, i thought u said u dont want me e-mailing u about a post, and i wasnt. but whats the purpose of having the e-mail function if u dont want people using it, when i get e-mails i dont bitch the person who sent me an e-mail and call it rude because they were asking me for my knowledge. it may be considered rude to you. but for u to freak out is kinda rude.
if your not too pissed off after this message would you mind telling me what settings you have your safc at? |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 24 2007 : 09:51:54 AM
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I have not had my S-AFC for about 5 years now.  What settings are you looking for? The basic settings for the S4 are something like:
Flapper AFM
5 in 5 out
Arrow up and to the right
4 cylinder
TPS high 99%, TPS low 90%
Beyond that the corrections depend on your map.
As for the email, the forum email address is for forum issues only. I was not aware that it was used in my profile so I will correct this issue. HOWEVER in general it is VERY rude to post to a forum and then request that someone email an answer. Even more rude to email the operator of the forum and tell them that there is a topic they should reply to, and even worse to do it TWICE after being asked not to. |
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fd3smaniac
Apprentece
5 Posts |
Posted - May 25 2007 : 9:13:01 PM
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ok the e-mail thing is over.....
but thanks for the settings ill test them in the morning
i have mine set at:
(The FC is an S5)
Flapper AFM
6 and 6
arrow up and to the right
4cylinder
and i didnt mess with the TPS, i dont think i even came across that, maybe i skipped a part
i fixed my hot start problem... it was my fuel pump relay(one behind the right headlight), too much current and it kept choking out the engine starving it for fuel |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 27 2007 : 10:20:29 AM
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The TPS settings are required to tell the S-AFC when to swtich between maps. Since you have the S5 which is a full range TPS, you can set them so that anything over 60% throttle is high, instead of the 93/99 setting required for the S4 (the S4 TPS is quarter range).
Another option is to connect the TPS line to the boost sensor, so that instead of TPS, the S-AFC switches maps based on manifold pressure. Use a generic GM style MAP sensor for this. |
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shut off trouble
