Question about 2008 Toyota Tacoma

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Im getting p2441 and p 2445 on my scanner

What is it and how do I fix it

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Scanner should tell you what it is not just a code .

Posted on Jan 24, 2015

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Posted on Jan 02, 2017

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Engine idle very lumpy and wanting to stall on gear down shift. Sometimes poor on starting until fuel gets through then car runs well but very smelly.


SYMPTOM 1: ROUGH IDLE IN THE COLD

The engine will not idle smoothly, or it stalls during idle when the engine is cold. When the engine is cold and you take your foot off the gas pedal, the engine runs very rough and may even stall. When you run the engine at higher speeds, it seems to run fine, or at least it runs more smoothly.
Possible causes:
  1. If you have a carburetor, you may have a bad accelerator pump or power circuit.
    The Fix: Replace accelerator pump or replace the carburetor.
  2. There may be a vacuum leak.
    The Fix: Check and replace the vacuum lines as required.
  3. There may be some type of ignition problem.
    The Fix: Check and replace the distributor cap, rotor, ignition wires, and spark plugs.
  4. The ignition timing may be set wrong.
    The Fix: Adjust the ignition timing.
  5. There may be a fault in the computerized engine control system.
    The Fix: Check engine control systems with a scan tool. Test the circuits and repair or replace components as required.
  1. The EGR valve may be bad.
    The Fix: Replace the EGR valve.
  2. The engine may have mechanical problems.
    The Fix: Check the compression to determine the engine's condition.
  3. Idle speed is set incorrectly.
    The Fix: Set idle speed to the car's original settings.
  4. The fuel injectors may be dirty.
    The Fix: Clean or replace the fuel injectors.

SYMPTOM 2: ROUGH IDLE WITH WARM ENGINE

The engine will not idle smoothly, or it stalls during idle when the engine is warm. When the engine is warm or hot and you take your foot off the gas pedal, the engine runs very rough and may even stall. When you run the engine at higher speeds, it seems to run fine.
Possible causes:
  1. If you have a carburetor, you may have a bad accelerator pump or power circuit.
    The Fix: Replace accelerator pump or replace the carburetor.
  2. There may be a vacuum leak.
    The Fix: Check and replace vacuum lines as required.
  3. The fuel pressure regulator may be operating at too low a pressure.
    The Fix: Check the fuel pressure with a fuel pressure gauge. Replace fuel pressure regulator. (This is not really a do-it-yourself kind of job.)
  4. Idle speed set incorrectly.
    The Fix: Set idle speed to specs.
  5. There may be some type of ignition problem.
    The Fix: Check and replace distributor cap, rotor, ignition wires and spark plugs.
  6. There may be a fault in the computerized engine control system.
    The Fix: Check engine control systems with a scan tool. Test circuits and repair or replace components as required. (This is not really a do-it-yourself kind of job.)
  7. The EGR valve may be bad.
    The Fix: Replace EGR valve.
  1. The engine may have mechanical problems.
    The Fix: Check compression to determine engine condition.
  2. The fuel injectors may be dirty.
    The Fix: Clean or replace fuel injectors.

SYMPTOM 3: FAST IDLING

The engine idles too fast. After the engine has run long enough to become warm, the idle speed does not come down to normal. You really notice it when you come to a stop and must have to push ******* the brake pedal to keep the car from moving.
Possible causes:
  1. If you have a carburetor, you may have a bad accelerator pump or power circuit.
    The Fix: Replace the accelerator pump or replace the carburetor.
  2. The engine may be overheating.
    The Fix: Check and repair the cooling system.
  3. The fuel pressure regulator may be operating at too low a pressure.
    The Fix: Check fuel pressure with a fuel pressure gauge. Replace fuel pressure regulator. (This is not really a do-it-yourself kind of job.)
  1. The ignition timing may be set wrong.
    The Fix: Adjust the ignition timing.
  2. There may be some type of ignition problem.
    The Fix: Check and replace the distributor cap, rotor, ignition wires and spark plugs.
  3. There may be a fault in the computerized engine control system.
    The Fix: Check the engine control systems with a scan tool. Test the circuits and repair or replace the components as required.
  4. There may be a vacuum leak.
    The Fix: Check and replace vacuum lines as required.
  5. You have a bad idle speed control unit.
    The Fix: Replace the idle speed control unit.
  6. The alternator may not be working properly.
    The Fix: Replace the alternator.

SYMPTOM 4: STALLING UPON STOPPING

Car stalls when stopped quickly. You are driving along and everything is just fine ... until you let off the gas pedal and apply the brakes. The engine starts shaking and may even stall. Not a good thing to happen because you lose power steering when the engine dies and could risk an accident.
Possible causes:
  1. There may be a serious vacuum leak.
    The Fix: Check and replace the vacuum lines as required.
  2. There may be a fault in the computerized engine control system.
    The Fix: Check the engine control systems with a scan tool. Test the circuits and repair or replace the components as required. (This is not really a do-it-yourself kind of job.)
  3. Broken linkage.
    The Fix: Repair or replace the linkage as required.
Idling issues can be very frustrating, but with some patient troubleshooting, you'll have a real chance at figuring it out. Remember to always check your engine idle with the air conditioning and defroster turned off, as both of these systems are designed to change the idle when they are on due to the air conditioning system's demands on the engine.

Aug 25, 2017 | Cars & Trucks

1 Answer

Im getting cylinder 5 misfire codes after driving on E and filling up. Could has gas have clogged my injector? I've changed the spark plug and ignition coil already and same error codes


Try by erasing the code. The computer thinks its still having the same code. if no way to erase code, then go to any auto parts store. auto zone etc, tell them you think the code is fixed, and they should erase code for free. with scanner. God-Bless!

Apr 25, 2016 | Cars & Trucks

1 Answer

How do i fix the engine


Just take it to an engine fixing garage. They will have you fixed in no time.

If you want to try and fix it yourself, post a question with lots of details like make, model, year, what the problem is in great detail and what you may have tried to fix it. With that information someone may be able to help you, but with the current question, no chance!

Dec 22, 2015 | Ford F-150 F150 Extended Cab

4 Answers

What is the fix


The fix is typically not the problem but the opposite

Dec 13, 2015 | Cars & Trucks

1 Answer

What causes a pulley on a serpentine belt to stop turning and how can I fix the issue?


The bearings on the idler or tensioner pulley have given up. No cheap fix here. You should fix it now or be prepared to fix a few more things later.

Sep 17, 2014 | 1996 Buick Riviera

3 Answers

My fix engine light is on and where do i need to go to fix it


To turn off the fix enine light the problem must be fixed. A dealer or a reputable service should be able to find and fix the problem. You can try and remove your negative battery for five minutes, then reconnecting. If the code was intermittent it will not come back. If it is a hard fault, meaning a definite bad component the light will come back on. In this case it needs to be fixed.

Sep 15, 2012 | 1998 Ford Windstar

1 Answer

SCANNER WILL NOT READ THE KEY ON 1998 HONDA CIVIC


ck; the e.c.m. power relay and the fuses under hood fuse panel located by the battery.

Aug 31, 2012 | Honda Civic Cars & Trucks

2 Answers

01 CIVIC ENGINE RUNS ONLY WITH THE SCANNER IS CONNECTED


im having the same problem on an 07 1.8L civic.
replaced clutch and now the car only starts with scanner plugged in.
when i disconnect scanner with car running, the car dies.
i dont know how to fix the problem, ive checked every fuse and still, nothing.... please help?!

May 20, 2012 | 2001 Honda Civic

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