Stuck at a certain rpm
05-15-2018, 08:37 AM
#23
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I'm assuming the TDR box failed and it's no longer adding fuel and it's going majorly lean.
or this botched injector install that involved the idle valve for some reason is a culprit:
still trying to figure out what an idle valve was removed from the TB to install injectors.
Pictures of this idle valve, and the rest of the engine bay please.
Does this car have aftermarket FPR?
Dear Europeans:
The universal law of cause and effect states that for every effect there is a definite cause, likewise for every cause, there is a definite effect.
what injectors did you install? and why?
or this botched injector install that involved the idle valve for some reason is a culprit:
idle valve is recirculated via a check valve to prevent leaks...
...i found out that the seal of the idle valvle on the intake manifold wasn t good (my mistske it was during the change of the injectors) i also find out that the silicone hose of the integrated wastegate was damaged.
...i found out that the seal of the idle valvle on the intake manifold wasn t good (my mistske it was during the change of the injectors) i also find out that the silicone hose of the integrated wastegate was damaged.
still trying to figure out what an idle valve was removed from the TB to install injectors.
Pictures of this idle valve, and the rest of the engine bay please.
Does this car have aftermarket FPR?
Dear Europeans:
The universal law of cause and effect states that for every effect there is a definite cause, likewise for every cause, there is a definite effect.
cause: change of the injectors.
effect: the other big problem is that my afr at idle is at 14.7 (like before) for a few second and then it slowly decrease to 10-11
effect: the other big problem is that my afr at idle is at 14.7 (like before) for a few second and then it slowly decrease to 10-11
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05-15-2018, 12:41 PM
#24
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I'm assuming the TDR box failed and it's no longer adding fuel and it's going majorly lean.
or this botched injector install that involved the idle valve for some reason is a culprit:
still trying to figure out what an idle valve was removed from the TB to install injectors.
Pictures of this idle valve, and the rest of the engine bay please.
Does this car have aftermarket FPR?
Dear Europeans:
The universal law of cause and effect states that for every effect there is a definite cause, likewise for every cause, there is a definite effect.
what injectors did you install? and why?
or this botched injector install that involved the idle valve for some reason is a culprit:
still trying to figure out what an idle valve was removed from the TB to install injectors.
Pictures of this idle valve, and the rest of the engine bay please.
Does this car have aftermarket FPR?
Dear Europeans:
The universal law of cause and effect states that for every effect there is a definite cause, likewise for every cause, there is a definite effect.
what injectors did you install? and why?
I have smalls red rx7 injectors (was iddling perfectly for 5'000miles and many others use it with vodoo box or tdr without problems).
I dont have a fpr (new fuel filter only) but again (tell me if i m wrong) if my problems where linked to the lack of a fpr i'll have suffer from it for long ago...
hopefully i'm not european! But i ll tell them!
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05-15-2018, 12:49 PM
#25
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So I changed my plug wires, wires, checked for vacuum leaks, checked maf, checked turbo on both side, checked cat (removed totally).
Please tell me if my last suspects are worst to change:
- egr valve (could lead to rough idle but with lean condition in my understandment)
- ignition coils
- ect sensor (what about this??)
-idle valve stick closed(a bad one could cause rich idle, but could it explain the blockage in rpm?l
I'll love to have your other idea too...i m totally lost.
Please tell me if my last suspects are worst to change:
- egr valve (could lead to rough idle but with lean condition in my understandment)
- ignition coils
- ect sensor (what about this??)
-idle valve stick closed(a bad one could cause rich idle, but could it explain the blockage in rpm?l
I'll love to have your other idea too...i m totally lost.
Last edited by Lol256; 05-15-2018 at 01:13 PM.
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05-15-2018, 02:45 PM
#28
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your ECU + TDR combo is not equipped to handle the 460xx injectors. you're basically flooding the motor to where it can not longer combust under load or stay stoich at idle.
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05-17-2018, 03:30 AM
#32
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ok i dont have 490cc but 290 secondary rx7 reds...they use it for tdr compressor with stock ecu, they also specified that they are perfect for stock ecu in many other place. They also iddled at 14.7 for two month...
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05-17-2018, 03:45 AM
#33
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I told you that s not a choice (i have 10years of programming behind me so this part wasnt the most difficult for me). I spent ALL my free time to learn from 0: reading, thinking, doing stuff that are at the opposite of my curriculum. I do it because i love this car more than everything and i would sleep one hour a night to get it work again. I not a mecanic, it s passional, i dont have 1% of your knowledge but i think i deserve to be not publiquly humiliated each time i talk. This knowledge i m sure could solve my problem if you use it this way.
thanks
thanks
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05-17-2018, 03:51 AM
#34
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To add my new tests:
- when i disconnect the idlle valve (iscv) connector, the iddle still start at 14.7 and then go down rich (no changes)
-if i create a vacuum leak post throttle body the idl get back to 14.7 and is then perfection (maybe it could help for diagnogstic)
- when i disconnect the idlle valve (iscv) connector, the iddle still start at 14.7 and then go down rich (no changes)
-if i create a vacuum leak post throttle body the idl get back to 14.7 and is then perfection (maybe it could help for diagnogstic)
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05-17-2018, 09:14 AM
#36
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does your TDR device thing have a vacuum line going to it? is the vacuum line on the FPR still connected/good?
your AFR mixture is obviously off. Both tests above increase the amount of air in the mixture. However, both should also significantly raise the idle speed.
your AFR mixture is obviously off. Both tests above increase the amount of air in the mixture. However, both should also significantly raise the idle speed.
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05-17-2018, 09:46 AM
#37
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for iac valve i just inspected it nothing more...for iscv i just removed the connector to see if i get a difference (that wasn t the case!). I have the 14.7 and then drop rich in cold and hot condition (maybe that put out of cause the iac). Do you think i can get a sure way to test if it open freely?
Last edited by Lol256; 05-17-2018 at 09:57 AM.
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