Question about 1999 Pontiac Grand Prix

Open Question

Have gone through 3 maf sensors in less then a year why

Posted by on

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Code P1121 for TP sensor - where is it located on engine of 2002 4.0 ford ranger


P1121 - Throttle Position (TP) Sensor Inconsistent with MAF Sensor The PCM monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during key ON engine running self-test the comparison of the TP sensor and MAF sensor readings are not consistent with calibrated load values, the test fails and a diagnostic trouble code is stored in continuous memory.
  • Air leak between MAF sensor and throttle body
  • TP sensor not seated properly
  • Damaged TP sensor
  • Damaged MAF sensor
Drive vehicle and exercise throttle and TP sensor in all gears. A TP PID (TP V PID) less than 4.82 % (0.24 volt) with a LOAD PID greater than 55% or a TP V PID greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a hard fault.
Do you know what scan data on a scan tool is ?
How to Install Replace Throttle Position Sensor TPS 2001 Ford Ranger Buy...

Jun 21, 2017 | Ford Cars & Trucks

2 Answers

CHANGED CRANK AND CAM SENSORS ALSO MAF I AM STILL GETTING CAM AND MAF FAULTS I HAVE RESET AND WIPED CODES WITH A SNAPON CODE READER BUT EVERY TIME YOU START THE CAR THEY JUST POP UP.


Check for vacuum leaks...
If you have a crack or leak in your air intake downstream of the sensor, then the MAF will be sensing less air than the engine is actually receiving.
If the clamp on the throttle body happens to come loose and fall off, then the MAF will indicate almost no air being sucked through the intake, yet the engine will be sucking air directly from the engine compartment into the throttle body.

Also depending upon the year of the vehicle, you need to make sure you replaced the MAF sensor with the right type designed for your car.

1999 and earlier: use one type for throttle cable
2000 and later: e-gas electronic throttle

Drive the car a bit and see if the ECM resets the code faults. BTW, did you check the air filter?- sometimes if this is not working properly, the filter could allow debris or dust to collect on the MAF sensor...just a last minute thought

Feb 26, 2015 | Cars & Trucks

1 Answer

NEEDS A TUNE UP, DONT SEE SPARK PLUGS


Tune-ups have been long gone for 25 years now

All that is left from those days are spark plugs

I hate to tell you this, but 80% of the vehicles out
there, have had their spark plugs under the ignition
coils for about 15 years,so you have some catching
to do

You can only have have plugs in the sides of a cylinder
head where you can see them, or you can conclude you
have a hemi or top mount spark plugs & the coils are on top

Spark Plugs get replaced every 3 years

The coils you have, only last about 6 to 7 years,
then misfire & eventually ruin the exhaust converter

Your 2005 vehicle:
Should be due for the 3rd set of spark plugs
The 3rd or 4th trans & power steering fluid change (Never Flush)
MAF Sensor gets cleaned at least once a year
Every 3 years--Air Filter,Gas Filter,Cabin Filter
At 100,000 miles you replace the front Oxygen Sensors
At least twice a year you pick up a mechanic & go for a ride
You drive they look at scan tool data,fuel trim,O2,Maf etc

Apr 02, 2014 | 2005 Lincoln Aviator

2 Answers

Cranks up, stalls, rough idle, no throttle responce


possibly the TPS....also check it for vaccum leaks

Mar 28, 2014 | 2005 Ford Five Hundred

1 Answer

2006 mercury mountaineer loses power going up hill, shakes.


Check for codes

Most likely half the ignition coils have failed

The Egr Valve could be gone as well

Have to change spark plugs every 3 years
Clean MAF Sensor once a year

Can't just drive it until you have a problem

Needs to be in the shop a couple times a year,
just like you go to a doctor

Sep 20, 2013 | Ford Explorer Cars & Trucks

1 Answer

My expedition jerks when at a come to a complete stop then turns off? why?


Spray the throttle body -- with CRC Throttle Body Cleaner

Replace the spark plugs at 60,000 miles & every 3 years

Clean MAF Sensor -- with CRC MAF Cleaner -- twice a year

New Air Filter

New O2 Sensors -- front ( 2) ONLY --At 100,000 miles

Aug 12, 2011 | Ford Expedition Cars & Trucks

2 Answers

My 2004 mercury monteray is experiencing jerking while driving up inclines. I changed the fule filter and it was real dirty when i took it off and replaced with a new one, it went away for about 3 weeks...


Spark Plugs--change every 3 years, not over 70,000 miles
Bad EGR Valve
Ignition Misfires
Worn out O2 Sensors---- change front 2 at 100,000 miles
Clean MAF Sensor-----clean- once or twice a year

Your trans failed, because the fluid has to be
changed every 3 years,30,000 miles ,power
steering also 3 years

Feb 20, 2011 | 2004 Mercury Montery

1 Answer

I got a p0113 code for the mass air flow sensor on a ford sport track 2001 4.0 litre. I replaced the part but my truck will not run with the sensor plugged in. I can start it with it unplugged but when I...


1. At the Mass Air Flow (MAF) sensor connector, backprobe the Gray (GY) wire at terminal #6 with the key on and the MAF sensor connected. Typical voltage will be about 2-3.5v depending on temperature.

2. If the voltage is above 4.5v (which is what the code P0113 indicates) check the voltage on the Gray/Red (GY/RD) wire at terminal #1 of the MAF sensor connector. The voltage on the GY/RD should be less than about 0.1v.

3. If the GY/RD wire shows less than 0.1v and the voltage on the GY wire is above 4.5v, inspect the connections at the MAF sensor connector. If OK, replace the MAF sensor for the open Intake Air Temperature (IAT) Sensor.

4. If the voltage on the GY/RD wire shows above 0.1v, locate and repair the high resistance between the MAF sensor and pin #91 of the Powertrain Control Module (PCM) connector.

5. If the voltage on the GY wire is not above 4.5v but the scanner shows -40 F on the data stream, check the voltage at pin 39 of the PCM. If the voltage at the PCM is above 4.5v, locate and repair the high resistance or open circuit in the GY wire between the PCM and MAF sensor connector

Nov 23, 2009 | 2001 Ford Explorer Sport Trac

Not finding what you are looking for?
1999 Pontiac Grand Prix Logo

Related Topics:

64 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7772 Answers

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

Answer questions

Manuals & User Guides

Loading...