Problem with j35 swap
07-01-2018, 10:02 AM
#1
Problem with j35 swap
So I have a cl type s 6spd which we just swapped to a j35 with rl cams. Originally we tried starting it up with an AEM EMS on an auto harness converted to the 6 speed and it will idle, but over 2500rpm it starts misfiring and putting a load on it isn’t possible. We then converted to the regular 6speed harness at the advice of some friends and tried to run the factory ecu again, but it’s doing the same thing. Over 2500 it doesn’t run right. Any ideas as to what this could be?
07-01-2018, 11:12 AM
#2
Suzuka Master
iTrader: (1)
Any DTC codes?
I'm sure you've done all this, since it sounds like you are surrounded with knowledgeable people and the car idles and gets up to 2500; however, you took all of the appropriate cam sensors from the front head of the 6-speed J32A2 and the pulley side crank sensor and such? Provide some details, if possible.
Hopefully, Karanx7 will see your thread and contribute. He's pretty much the only one around anymore that has the self taught in
depth knowledge to provide direction when talking electrics or AEM EMS for a 6-speed application.
Nice looking car, BTW.
I'm sure you've done all this, since it sounds like you are surrounded with knowledgeable people and the car idles and gets up to 2500; however, you took all of the appropriate cam sensors from the front head of the 6-speed J32A2 and the pulley side crank sensor and such? Provide some details, if possible.
Hopefully, Karanx7 will see your thread and contribute. He's pretty much the only one around anymore that has the self taught in
depth knowledge to provide direction when talking electrics or AEM EMS for a 6-speed application.
Nice looking car, BTW.
07-01-2018, 11:44 AM
#4
Suzuka Master
iTrader: (1)
So, to clarify. You don't know if said sensors & cam pulley have been transferred, from the CLS6 J32A2 to the J35A3, to make it 6-speed compatable?
Since your man is familiar with integras and civics, would he have thought to do that or did you not tell him that was essential, assuming you did your research, for a J35A3 swap into a CLS6? Just curious.
Last edited by zeta; 07-01-2018 at 11:49 AM.
07-01-2018, 12:21 PM
#5
I'm sure he did his research so it may be something minor. He did switch all sensors over. We are using CLS pistons. We have the RL cams and p2r cam spacer in the j35 heads
07-01-2018, 12:36 PM
#6
OK. That's a good sign there are no codes.
So, to clarify. You don't know if said sensors & cam pulley have been transferred, from the CLS6 J32A2 to the J35A3, to make it 6-speed compatable?
Since your man is familiar with integras and civics, would he have thought to do that or did you not tell him that was essential, assuming you did your research, for a J35A3 swap into a CLS6? Just curious.
So, to clarify. You don't know if said sensors & cam pulley have been transferred, from the CLS6 J32A2 to the J35A3, to make it 6-speed compatable?
Since your man is familiar with integras and civics, would he have thought to do that or did you not tell him that was essential, assuming you did your research, for a J35A3 swap into a CLS6? Just curious.
07-01-2018, 12:49 PM
#7
Suzuka Master
iTrader: (1)
With the absence of any codes, as you say, it's probably something minor or in the rewiring connections performed so far.
When you find the issue, please update your thread.
Good Luck!
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07-03-2018, 05:45 PM
#10
The inconvenient truth
Where did you get the white lettering of 'toyo' and 'proxes' for your tires? I too have toyo proxes.
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07-07-2018, 09:43 AM
#15
Suzuka Master
iTrader: (1)
So, to recap and for posterity's sake.
Your mechanic took the following from the manual transmission J32A2 and swapped it over to the automatic transmission J35A3 to make it 6-speed compatable:
Front head camshaft pulley; TDC sensors and sub harness and front timing belt back cover plate assembly.
Crankshaft sensor sub harness; crankshaft sensor assembly; timing belt stopper plate and timing belt drive pulley (passenger side).
You've checked the TPS and MAP sensor connections, on the throttle body for proper placement, as gnuts suggested.
To this day there are no codes presently and it won't rev past 2500rpm, even after reconverting back to the OEM 6-speed harness and ECU.
Has your mechanic gone thoroughly through the connections made when the 6-speed harness was converted to the auto harness for the initial AEM EMS start-up? And then again, when it was converted back to the OEM 6-speed harness to run off the stock ECU?
Maybe, if you can get the detail from your mechanic, you can list the things you/he has tried in the past week? If there is something not covered here, list it.
The LuK DMF063 flywheel is the OEM flywheel for the CLS6. I have it on my car. Is the DMF063 the one that you are using?
With that said, why would you think using the LuK DMF would be the problem?
Especially in light of the fact that there are no codes from the crank sensors at the transmission or drive pulley side?
***
The only thing I have left as a suggestion is to remove the RL cams and P2r spacers and install the J32A2 cams in their place to see if THAT has any effect.
Last edited by zeta; 07-07-2018 at 09:49 AM.
07-07-2018, 01:15 PM
#16
So, to recap and for posterity's sake.
Your mechanic took the following from the manual transmission J32A2 and swapped it over to the automatic transmission J35A3 to make it 6-speed compatable:
Front head camshaft pulley; TDC sensors and sub harness and front timing belt back cover plate assembly.
Crankshaft sensor sub harness; crankshaft sensor assembly; timing belt stopper plate and timing belt drive pulley (passenger side).
You've checked the TPS and MAP sensor connections, on the throttle body for proper placement, as gnuts suggested.
To this day there are no codes presently and it won't rev past 2500rpm, even after reconverting back to the OEM 6-speed harness and ECU.
Has your mechanic gone thoroughly through the connections made when the 6-speed harness was converted to the auto harness for the initial AEM EMS start-up? And then again, when it was converted back to the OEM 6-speed harness to run off the stock ECU?
Maybe, if you can get the detail from your mechanic, you can list the things you/he has tried in the past week? If there is something not covered here, list it.
The LuK DMF063 flywheel is the OEM flywheel for the CLS6. I have it on my car. Is the DMF063 the one that you are using?
With that said, why would you think using the LuK DMF would be the problem?
Especially in light of the fact that there are no codes from the crank sensors at the transmission or drive pulley side?
***
The only thing I have left as a suggestion is to remove the RL cams and P2r spacers and install the J32A2 cams in their place to see if THAT has any effect.
Your mechanic took the following from the manual transmission J32A2 and swapped it over to the automatic transmission J35A3 to make it 6-speed compatable:
Front head camshaft pulley; TDC sensors and sub harness and front timing belt back cover plate assembly.
Crankshaft sensor sub harness; crankshaft sensor assembly; timing belt stopper plate and timing belt drive pulley (passenger side).
You've checked the TPS and MAP sensor connections, on the throttle body for proper placement, as gnuts suggested.
To this day there are no codes presently and it won't rev past 2500rpm, even after reconverting back to the OEM 6-speed harness and ECU.
Has your mechanic gone thoroughly through the connections made when the 6-speed harness was converted to the auto harness for the initial AEM EMS start-up? And then again, when it was converted back to the OEM 6-speed harness to run off the stock ECU?
Maybe, if you can get the detail from your mechanic, you can list the things you/he has tried in the past week? If there is something not covered here, list it.
The LuK DMF063 flywheel is the OEM flywheel for the CLS6. I have it on my car. Is the DMF063 the one that you are using?
With that said, why would you think using the LuK DMF would be the problem?
Especially in light of the fact that there are no codes from the crank sensors at the transmission or drive pulley side?
***
The only thing I have left as a suggestion is to remove the RL cams and P2r spacers and install the J32A2 cams in their place to see if THAT has any effect.
07-07-2018, 01:48 PM
#17
Suzuka Master
iTrader: (1)
Usually the J32A2 cams are used with the stock OEM ECU/connections and everyone has not had problems, unless there was an indicator through an errant code for a crank sensor or something.
At this point, I'm just trying to throw something out and see if it sticks.
I would have tried to get the car running first with the OEM ECU and proven J32A2 cams before I went and started messing with the AEM EMS and chopping on harnesses. And that would have only been done with a professional tuner familiar with said AEM EMS and the CLS6 platform.
Not saying your guy is not experienced with the EMS and all.As far as using 'the manual harness' if you mean the oem harness that came stock with the car, then yes. However, when you come on here looking for help, you don't provide any details on the extent or scope of this so called 'harness conversion', so who knows WTF is going on. All we know is that you say your swapper has done his 'research' and the thing is not working.
07-07-2018, 04:14 PM
#18
Suzuka Master
iTrader: (1)
^^
Perhaps the answer is as simple as the advice provided in post #4, on the link below, assuming the wiring conversion has been done correctly:
https://acurazine.com/forums/2g-cl-p...es-2-a-970534/
Good Luck!
Perhaps the answer is as simple as the advice provided in post #4, on the link below, assuming the wiring conversion has been done correctly:
https://acurazine.com/forums/2g-cl-p...es-2-a-970534/
Good Luck!
07-10-2018, 09:23 AM
#19
I have the RL cams in my J35A3 swap and haven't had a problem. No AEM but swapped over cam gears, cam sensors, crank gear sensor from 6MT. J32 to the auto J35.
My only issue that ever arose was a bad crank sensor on transmission housing. It was giving me the symptoms you describe but I had the CEL on for CKP sensor P0336. I may have spilled coolant into the sensor harness.
My only issue that ever arose was a bad crank sensor on transmission housing. It was giving me the symptoms you describe but I had the CEL on for CKP sensor P0336. I may have spilled coolant into the sensor harness.
07-27-2018, 05:22 PM
#20
Suzuka Master
iTrader: (1)
OP, did you ever get the issue(s) resolved with this swap??
07-30-2018, 10:43 AM
#22
Suzuka Master
iTrader: (1)
You had to buy another LuK flywheel?
08-11-2018, 09:20 AM
#23
Yes. I'm guessing the flywheel I bought was defective. Anyway car started up and ran but couldn't tune it with the aem fic. It was running lean. So we're putting back the em2 and hopefully can get it to run with that.
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