Limp Mode
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Infinity g35s
Limp Mode
My g35 is in limp mode. i don’t see no problem on the transmission because i can feel the power holding back. only electrical problem that i noticed was that the main 12v charger stops working after a minute. and sometimes lights be dimming a little. i installed a new alternator, battery,4 cam shafts(autozone), crankshaft (dealer), and 2 throttle body (autozone). also did a muffler job on it. i sometimes get like a gas/burnt type of smell. when i let go off the gas the rev needle drops & bounce.
the car drives. i drive it to school every day and put some miles on it. just stuck on limp mode, not letting me pass 3k rpm.
BANNED!!!
Joined: May 2017
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From: Washington State
Coupe 6MT Premium RAS
Clear all those codes and see what comes back, if the engine is almost stalling it can throw a whole cascade of codes like those P0011/P0021 as the oil pressure drops low enough to throw off the VCT.
Did you do the idle air recalibration after you installed those two new throttle bodies? Steps are in the FSM, section EC - Engine Controls under "basic service procedures".
Did you save all your OEM cam sensors? Aftermarket sensors are notoriously bad, only use OEM or Hitachi (Hitachi was the OEM manufacturer).
The P1705, P0725 are transmission codes that the TCM didn't receive throttle position or engine rpm data via CANBUS, this can be caused from the engine stalling as well since you are getting a bunch of other engine codes.
What exactly was the FIRST code the car threw? What were the symptoms when this all started? It sounds like you randomly threw a bunch of parts at the car hoping something would fix the issue but never did any troubleshooting to narrow down the actual issue. This can cause other problems to be compounded especially when you're talking about aftermarket parts like the cam sensors and throttle bodies since you have no way to verify they're actually working other than "it came new in the box" but things like that have a notoriously high failure rate and are known to cause a lot of problems with these engines even when they're brand new. It's not uncommon to have a dozen aftermarket cam sensors in a row that won't make the engine function properly.
If you have all the existing OEM engine components I strongly recommend putting them all back in then see what codes still exist.
Did you do the idle air recalibration after you installed those two new throttle bodies? Steps are in the FSM, section EC - Engine Controls under "basic service procedures".
Did you save all your OEM cam sensors? Aftermarket sensors are notoriously bad, only use OEM or Hitachi (Hitachi was the OEM manufacturer).
The P1705, P0725 are transmission codes that the TCM didn't receive throttle position or engine rpm data via CANBUS, this can be caused from the engine stalling as well since you are getting a bunch of other engine codes.
What exactly was the FIRST code the car threw? What were the symptoms when this all started? It sounds like you randomly threw a bunch of parts at the car hoping something would fix the issue but never did any troubleshooting to narrow down the actual issue. This can cause other problems to be compounded especially when you're talking about aftermarket parts like the cam sensors and throttle bodies since you have no way to verify they're actually working other than "it came new in the box" but things like that have a notoriously high failure rate and are known to cause a lot of problems with these engines even when they're brand new. It's not uncommon to have a dozen aftermarket cam sensors in a row that won't make the engine function properly.
If you have all the existing OEM engine components I strongly recommend putting them all back in then see what codes still exist.
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blahhhjonathan@
G35 Sedan V36 2007- 08
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Oct 1, 2014 08:38 PM