Question about Mazda 323
You have a problem with the air intake sensor which controls your throttle!
Posted on Oct 21, 2013
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Posted on Jan 02, 2017
OK, folks, here's the scoop. The dealer took our Veracruz in for diagnostic testing and determined the cause of the problem was the actuator for the Electronic Transmission Control system (ETC).
Apparently, in later model cars like the Veracruz, a computer controls the transmission as well as the engine for optimum performance.
If the computer detects a severe enough fault in one of the components of the ETC (e.g. bad sensor, bad component, etc), it places the vehicle in limp home mode.
Based on my experiences, when in limp home mode, the transmission is forced to stay in 3rd gear, the engine will not exceed 2000RPM, the accelerator is not responsive past 2000RPM, and the engine runs rough (probably because the mixture is changed to very rich). The philosophy here, as was explained to me by somebody who works for Hyundai, is to allow the vehicle to continue operating long enough so that it can be driven to a safe location or for service.
I asked whether or not this limp home "feature" could be disabled at the dealership, but apparently it cannot.
I have alerted some folks at Hyundai Motor USA to this thread so they can do further research if the problem begins to affect more individuals than just us three.
FYI - I am in no way shape or form a mechanic or mechanically-minded, so if I have explained anything correctly, I will gladly accept further corrections/explanations from an expert or mechanic. :)
Posted on Aug 25, 2008
hey-I have has this before different car but same - idle control valve is failing - computer at shop will pick this up on diagnostic
Posted on Oct 12, 2008
SOURCE: slow acceleration, high rpm
This sounds normal to me! The engine will read that rpm when accerlerating lightly. It is the stall of the torque convertor. The oil pressure will always be higher when the rpm's are higher, or when the oil is thicker - cold.
Virbration? That is a different story. Oil won't cause that.
Posted on Apr 02, 2009
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