Question about Buick LaCrosse
Bought a 2012 Lacrosse with 25000mi. At 31000, computer reduced engine power. Took it to dealer, replaced pedal, same problem occurred leaving the dealer's lot! They are now playing with the "connector wires". Should I be worried? It's a CPO warranty.
So what your saying, is what I have said for years.
Dealers & Repair Shops do not road test any vehicle
at all,let alone 20 miles to confirm the repair as I do,
before giving it back to the owner.
Your best to always get the vehicle with no warranty & save that
money to spend at a local shop,only when you need to.
The Gas Pedal or APP,ETC many names for it,seldom fail,
may recall the Toyota issues a few years back
The Govt put NASA on that & they found nothing.
Can't weigh in on your warranty. That you ask the folks that
Posted on Jul 19, 2013
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Posted on Jan 02, 2017
I hate to be negative but there is not a big aftermarket for your car, try googling it, if you get nothing chevy may be the way to go.
Posted on Mar 16, 2009
had similar problem with 99 ram. i made holes in crank sensor a bit bigger,removed rubber seal that sensor goes through in trans,installed 1 bolt and adjusted sensor back towards firewall and tightened that 1 bolt and its worked fine ever since
Posted on Aug 07, 2009
SOURCE: 1998 Saturn SL2 engine light
The following are malfunctions that could cause a rich condition:
^ Fuel pressure too high. Perform fuel pressure test.
^ Leaking fuel injector(s). - Perform pressure leak down test.
^ Vacuum leak around the MAP sensor grommet.
^ Oxygen sensor contamination.
^ Restricted exhaust or air intake.
^ Fuel Vapor Canister saturated with fuel.
IMPORTANT: If the front oxygen reading voltage is above 600 mV and the rear HO2S is above 600 mV all the time, the O2 sensors are probably not
Posted on Sep 22, 2009
Tips for a great answer:
Limited throttle mode--The control module will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
Throttle default mode--The control module will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
Forced idle mode--The control module will perform the following actions:
Limit engine speed to idle by positioning throttle position, or by controlling fuel and spark if throttle is turned off.
Ignore accelerator pedal input.
Engine shutdown mode--The control module will disable fuel and de-energize the throttle actuator.
Powertrain Control Module Description for the 4.8L, 5.3L and 6.0L engine
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Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control, however, the maximum throttle opening is limited.
Throttle default mode--The ECM will turn OFF the throttle actuator motor and the throttle will return to the spring loaded default position.
Forced idle mode--The ECM will perform the following actions:
Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned OFF
Ignore the accelerator pedal input
Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.
Did you have it checked for DTC's - diagnostic trouble code's related to the reduced engine power ?
All so has APP sensor gas pedal !
Accelerator Pedal Position (APP) Sensor
The accelerator pedal contains 2 individual accelerator pedal position (APP) sensors within the assembly. The APP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:
A 5-volt reference circuit
A low reference circuit
A signal circuit
The APP sensors are used to determine the pedal angle. The engine control module (ECM) provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors provide the ECM with signal voltage proportional to the pedal movement. The APP sensor 1 signal voltage at rest position is less than 1 volt and increases to more than 4 volts as the pedal is actuated. The APP sensor 2 signal voltage at rest position is less than 0.6 volt and increases to more than 2 volts as the pedal is actuated.
Your best bet is take your vehicle to the dealer !
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