2004 Chevy Impala. Engine Size: 3400 v6.
My check engine light came on. While I was driving my car the check engine light started flashing and the car acted like it didn't want to go. When I turned the car off, it will not start. It acts like it wants to start but will not stay started.

 

Answer: A flashing engine light means that the computer is seeing an engine misfire that is severe enough to cause catalytic converter, damage. Unlike a steady ON light that is a regular emissions related problem. There are codes stored in the computer now, such as P0300- misfire. You would need to scan the system for stored trouble codes to see if there are more codes. By how it is acting, I would suspect that you were loosing fuel pressure and this was causing the misfire, and now there is no, or low pressure causing the no start condition. You would need to check this with a fuel pressure gauge. Another quick check that sometimes works is to pound on the bottom of the gas tank while someone cranks the engine. If it starts, then the pump is bad. It may start then stall, or keep running. Or spray starter fluid in the throttle while cranking. Could also possibly be an ignition control module problem causing the msfires and not starting, but really sounds like a gas problem.


2003 Chevy impala
Engine Size : 3.4
Question : Catalyst read not ready n evaporative system read some on a Inspection what do dat mean.

 

Answer: what you are referring to is called I.M. flags. Your car's computer keeps track of what tests have been run by itself on emissions system components. The fact that the catalyst test has not run just means that since the last time codes were cleared or if you haven't driven it in a few days the computer has not seen all the parameters it needs in order to run the test. Normally in order to run that test the computer must also have run the oxygen sensor tests. Also the car must have been driven to meet certain criteria. Different your cars have different criteria. Usually the test will run after the engine is warmed up and has been driven over 45 miles an hour for a few minutes then come to a stop and idle for a few minutes. The same goes for the evaporative emissions system tests. Some tests ran some test didn't. If you just cleared the codes because of a check engine light and tried to take it to the inspection that won't work. It needs to be Jim for a while in different situations such as stop and go traffic, highway driving, engine off for a few minutes and then started and ran on highway again. Many different tests need to see many different things before it will run the test.


2003 Chevy Impala Engine Size 3.4.
Question : is it very difficult to change the shift solenoids on this car.

 

Answer: If you're mechanically inclined and have the right tools, you can probably do it yourself. There are a few special things you need like an engine fixture to support the engine/trans. You need to remove the subframe from the vehicle so you can lower the trans down enough to get the side cover off and access the solenoids. From there you can change what you need to, just make sure the correct solenoid goes in the correct place. They are not all the same but will fit in other spots. Always use a new side cover gasket and fill with correct fluid afterwards.

 


Leave your comments

Post comment as a guest

0
  • Guest - MIKE

    I have a 2001 Chevrolet Impala, that on rainy days, the check engine light starts to blink and the engine shakes. I opened the hood and noticed my ignition control module is sparking to the boot of the spark plug wire. I have put in new spark plugs and wires about three months ago, so I know it's not the wires. The problem ,I also noticed, is water droplets on the boot of the spark plug wires. On sunny dry days, it behaves and I don't have that problem. Your help is appreciated. Thanks.

  • Guest - TechHeader

    In reply to: Guest - MIKE

    Either the spark plug wires are not the best quality and they are arcing through the boots, or the ignition coils are the problem. Remove the wires at the coils and look for corrosion in the boot or on the coil towers.


Latest Articles

Theft Security Light on My ...

Theft / Security Light The security system on today's cars and trucks prevents the vehicle from ...

Ford Taurus High power ...

I have a 1999 ford Taurus that has the Duratec 3.0 24valve dohc engine, the pressurized power ...

Dodge Caravan Surging And Dies

I have a 99 dodge 6 cyl caravan...just got a tune-up and it started surging and would die but ...

2002 Infiniti Turns Over Wont ...

MY car sounds like it wants to turn over but doesn't. Will start with a jump. Just teplaced ...

Log In Or Register
? The Benefits

How Things Work

Charging System Components and Operation

On today's newer cars and trucks, the generator (ALternator) provides DC voltage to operate the vehicle's electrical system and to charge the battery. A magnetic field is created when current flows through the rotor windings. The rotor is belt driven by the engine creating an AC voltage as this field rotates within the stator windings.

Read more...

Common Engine Codes

Throttle Position Sensor Code P0121, P0122 and P0123

The throttle position (TP) sensor is used by the powertrain control module (PCM) to determine the throttle plate angle for various engine management systems. The TP sensor is a potentiometer type sensor with three circuits: a 5-volt reference, a low reference, and a signal. The PCM provides the TP sensor with a 5-volt reference circuit and a low reference circuit.

Read more...

Be Social With Us !

FacebookRedditPinterest