Question about Toyota Tacoma

2 Answers

Bad fuel pump diagnosis? small flutter in engine got worse within 20 min of driving and had to stop

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 32 Answers

If the engine wants to stall as you accelerate,and sometimes cuts out at highway speeds,...Its the fuel pump,If it misses at idle,and while driving,its the fuel filter,Have the fuel presure checked,or change the fuel filter,when you change the fuel pump,also ghange the fuel filter.

Posted on Jul 26, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Toyota Master
  • 6,674 Answers

Fuel pressure test should only take 10 minutes at a garage to confirm, but if not available, when it quits, spray quick start or wd-40 into intake of throttle body for a second or 2. If it fires your probably guessing right. Personally I'd change fuel filter first, just in case, and you'll want that changed if you need fuel pump anyway.

Posted on Jul 26, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Hard starting


This problem can be hard to track down , it could be caused by several thing's ! A bad check valve in the fuel pump letting fuel drain back into the tank , not keeping fuel line pressure up , a crankshaft position sensor can also cause this as well as an ignition control module !
Checks
Action
DEFINITION: Engine cranks OK, but does not start for a long time. Does eventually run, or may start but immediately dies.
Preliminary
?€¢
Refer to Important Preliminary Checks Before Starting in Symptoms - Engine Controls .


?€¢
Inspect the powertrain control module (PCM) grounds for being clean, tight, and in the proper locations. Refer to Engine Controls Schematics .


?€¢
Search for bulletins.

Sensor/System
?€¢
Test the engine coolant temperature (ECT) sensor for being shifted in value. Connect a scan tool. Compare the engine coolant temperature against the intake air temperature (IAT) on a cold engine. The ECT and IAT sensor values should be within ?± 3?°C (5?°F) of each other. If the ECT sensor is out of range with the IAT sensor, check the resistance of the ECT sensor. Refer to Temperature Versus Resistance for resistance specifications. Replace the ECT sensor if the resistance is not within the specification. If the sensor is within the specification, repair the ECT signal circuit for high resistance.


?€¢
Inspect the mass air flow (MAF) sensor installation. A MAF sensor that is incorrectly installed may cause a hard start. Important: The embossed arrows on the MAF sensor indicate the direction of the intake air flow. The arrows must point toward the engine. Install the MAF in the proper direction. Refer to Mass Airflow Sensor/Intake Air Temperature Sensor Replacement .


?€¢
Inspect the camshaft position (CMP) sensor for proper mounting and/or a bad connection. A long crank time occurs if the PCM does not receive a CMP signal.

Fuel System
?€¢
Inspect the fuel pump relay operation. The fuel pump should turn ON for 2 seconds when you turn ON the ignition. Refer to Fuel Pump Electrical Circuit Diagnosis .


?€¢
A faulty in-tank fuel pump check valve allows the fuel in the lines to drain back to the tank after the engine stops. Refer to Fuel System Diagnosis .


?€¢
Inspect both injector fuses for being open. An open injector fuse causes four injectors and four ignition coils not to operate. Replace the fuse. Inspect the injector circuits and the ignition coil circuits for an intermittent short to ground.


?€¢
Inspect for incorrect fuel pressure. Refer to Fuel System Diagnosis .


?€¢
Inspect for a restricted fuel filter. Refer to Fuel System Diagnosis .


?€¢
Inspect for a contaminated fuel condition. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .


Ignition System
?€¢
Test both injector fuses for being open. An open injector fuse causes four ignition coils and four injectors not to operate. Replace the fuse. Inspect the ignition coil circuits and the injector circuits for an intermittent short to ground.


?€¢
Inspect for proper ignition voltage output with J 26792 Spark Tester. Refer to Electronic Ignition (EI) System Diagnosis .


?€¢
Remove the spark plugs and check for the following:


-
Correct heat range


-
Wet plugs


-
Cracks


-
Wear


-
Improper gap


-
Burned electrodes


-
Heavy deposits

Refer to Spark Plug Inspection in Engine Electrical.
?€¢
Determine the cause of the fouling before replacing the spark plugs if the spark plugs are gas, coolant, or oil fouled. Refer to DTC P0172 or P0175 for diagnosis of the rich condition. Refer to Spark Plug Inspection in Engine Electrical for diagnosis of coolant or oil fouled spark plugs.


?€¢
Inspect for bare or shorted ignition wires.


?€¢
Inspect for loose ignition coil grounds. Refer to Electronic Ignition (EI) System Diagnosis .

Jul 14, 2015 | 2002 GMC Sierra 1500

3 Answers

We have a 2002 Chevy Suburban and it cuts out while driving down the road, about 20-30 mins after starting the vehicle. We've cleaned the fuel filter. As soon as we crank it up it'll run for 20 mins than...


there is code that does not turn on the service engine soon. have code retrieve.And when the problems occured have fuel pressure check.You have to find out if the problem is electrical or fuel and air .Another way to find it is move engine harness while engine running if it stall could be short to ground or wire cut open

Aug 28, 2013 | 2002 Chevrolet Suburban

1 Answer

2002 chevy suburban cutting off while driving. Start it up in the morning and i'll cut off within 20-30 mins down the road, once running for a while it's fine. whats the problem???


Fuel Pump may be bad & stops at times

Will only get worse & you'll get stuck somewhere
if that is the issue

Then it could be any number of things that may take
some time to find & several shops until you find one that
can solve something

Aug 28, 2013 | 2002 Chevrolet Suburban

1 Answer

Keeps blowing fuel pump fuse on my 2001 dodge van 5.2 after driving a few miles


These trucks are bad to chaff wires.if it runs 15 -20 min. in park but blows the fuse within a few miles of driving you almost definitely have a wire shorting out. this can be tedious to find. good luck

Nov 10, 2011 | 2001 Dodge Ram 2500 Truck

1 Answer

My 2005 saturn L300 stops after about 20 min of driving and if you wait 30 min to an hour it will start up and the same thing happens again. I've been told it is the fuel pump, what should that cost to...


What is the basis for determining it is the fuel pump? If it is a fuel system pressure loss, that is probably a good diagnosis, provided that the fuel pump relay is confirmed to be on (voltage present on the fuel pump). I had a vehicle with throttle body fuel injection that did the same thing. I tracked it down to the fuel injector driver transistor inside the ECM - one of the leads inside would open when the transistor got warm.

Fuel pumps cost $60-$350. The lowest price I've found was on the Amazon website. Most of them are listed above $240. Note: GM used mostly Delphi parts (typically $240). At that price, it pays to be sure you have the right diagnosis. Ask questions...

Mar 14, 2011 | Saturn L300 Cars & Trucks

1 Answer

I own a 2002 GMC Sierra 3/4 ton. I have cleaned the injectors, changed fuel filter, changed oil and filter, replaced tires, but she is still fluttering and then dyeing. The RPM's drop and it feels like I...


hello,
You have a bad oil pressure switch. I know that sounds strange but It feeds the fuel pump. Some times randomly the PCM does a self check and shuts off the fuel pump relay when it does this it runs off power from the oil pressure switch. The easiest way to confirm this as a diagnosis is to unplug the fuel pump relay when the engine is running. If it dies when you unplug it thats it. if not you will probably need a fuel pump or possibly just a cap and rotor (tune) but I belive it is the oil pressure switch.

Roy

Nov 13, 2009 | 2002 GMC Sierra

1 Answer

Fuel pressure intermittently drops causing sputter and die.


check for 12v constant at your fuel pump if you are not getting that replace your relay.
if you are getting 12 volts at your fuel pump the fuel pump is possible to run tuel it gets warm then shut down to a lower rpm I would then replace the fuel pump

Oct 10, 2009 | 1994 Dodge Ram

1 Answer

94' Jeep Gc shuts off while driving. wont restart for hours!!


Sounds like either the fuel pump is going bad and overheating, or, the crankshaft position sensor is going bad...both items will give similar symptoms. Both are not terribly difficult jobs but are time consumers. Before doing either repair, you need a code scan and better diagnosis than I can give you here without a hands-on examination. Fuel pump can be diagnosed by spraying carb cleaner into the throttle body while cranking in "no start" condition. If engine fires up then stalls it's a pump problem. If not then it's a spark control problem.

May 02, 2009 | 1994 Jeep Grand Cherokee

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

1,603 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

75005 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7710 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...