Does the TII get a 3800rpm hesitation?
My car seems to studder right around there, and I was wondering if TII's get this. Ive seen a bunch of N/A people talk about it, but dont remember any TII talking about it off the top of my head. Assuming a TII can get it also, are the fixes the same? Can someone tell me the fixes? Could the ECU be faulty?
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Yeah - it's normally a grounding harness bug where the 2nd set of injectors don't kick in @ 3500. I think rx7.com or fc3s.com has a fix posted for it with pictures.
It can also be dirty fuel injectors as well. |
AHHH there is life out there. I thank you many times my friend. I wonder why FC3S.org hasnt chimed in? Eh, ill check out the site anyway.
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Up. What are the fixes people? I tried a ground strap, from the intercooler bolt, to the battery, to no avail. None of the sites listed spoke of the 3800rpm hesitation.
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Originally posted by TonyTurboII Up. What are the fixes people? I tried a ground strap, from the intercooler bolt, to the battery, to no avail. None of the sites listed spoke of the 3800rpm hesitation. Scott |
Yes, the TII can have this problem. However, the same symptom can appear for a whole bunch of other problems. The reason is that the point where the ECU brings on the secondary injectors and switches to internal air/fuel curves based on rpm/pressure is - you guessed it - 3800 rpm. Therefore, any problem in either circuit will cause a hesitation when switching to the other circuit. Here is a partial list of things to check.
Vacuum leak. TID leak. Air Flow Meter. Water thermo sensor. Intake air temp sensor, both in the AFM and the throttle body. Pressure/boost sensor. Line going to pressure/boost sensor, both for leaks and presence of the restrictor. Injector resistor pack, if your car has one. Secondary injector connectors. Secondary injectors themselves. Sorry I can't be more specific, but this 3800 rpm problem is kind of a universal symptom - almost anything can cause it.:D Irv, Keith's dad |
What kinds of mods have you done if any?
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HA
LOL@tony turbo2's pic of happy gilmore and bob barker!!!
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Try here..
https://www.rx7club.com/vforums/show...threadid=17974 There is a hyperlink buried in my text to a write up on fixing the hesitation by grounding ECU wires. Another useful link... http://www.teamfc3s.org/info/articles/idle.html |
It could be the ECU itself. Check the ECU Code, ie N331. Normaly the ones with the higher codes are the newer versions of the ECU. My Vert ran great with a N331 ecu. When that bit the dust, I replaced it with a N231. And thus developed the 3800 hesitation. So you might want to switch your ecu.
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Originally posted by Turbo FB. What kinds of mods have you done if any? |
How do I ground the boost sensor? Im also gonna try grounding the ECU wires. Then, if it ever arrives, put on a BAC valve.
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Originally posted by RXster Try here.. https://www.rx7club.com/vforums/show...threadid=17974 There is a hyperlink buried in my text to a write up on fixing the hesitation by grounding ECU wires. Another useful link... http://www.teamfc3s.org/info/articles/idle.html |
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