I have a 2002 F-150, 4.2 V6. It has erratic idle when stopping at lights and stop signs. I have replaced )2 sensors, IAC, TPS, plugs and wires and cannot rectify the problem.

Asked by tank1000p Nov 16, 2015 at 09:28 PM about the 2002 Ford F-150

Question type: Maintenance & Repair

replaced IAC, TPS, plugs/ wires and coil pack. Truck still suffers from erratic
idle. Also replaced all 4 02 sensors.

143,755

T_S_T answered 8 years ago

Sound like you need to check all your vacume hose,s and your intake gasket for leaks,

1 people found this helpful.

Mark helpful

101,595

KenF answered 8 years ago

Especially the PCV valve and elbow, the elbow connecting the PCV valve the the underside of the throttle body often become badly deteriorated and cause a vacuum leak with symptoms like yours.

2 people found this helpful.

Mark helpful

Your Answer:

I have a 2002 F-150, 4.2 V6. It has erratic idle when stopping at lights and stop signs. I have replaced )2 sensors, IAC, TPS, plugs and wires and cannot rectify the problem. 2 Answers

replaced IAC, TPS, plugs/ wires and coil pack. Truck still suffers from erratic idle. Also replaced all 4 02 sensors.

2002 Ford F-150

-

Maintenance & Repair
I have an 84 ford f-150, and when at stop lights it cuts off when i step on brakes. i changed fuel filter, master cylinder, and power booster and still have the problem. 5 Answers

I have an 84 ford f-150, and when at stop lights it cuts off when i step on brakes. i changed fuel filter, master cylinder, and power booster and still have the problem.

1984 Ford F-150

-

Maintenance & Repair
I have a 2004 ford f-150 with the triton vs. I have no power, rough idle, and it sounds like crap. I've cleaned the MAF, replaced 2 injectors that tested bad, and replaced the throttle position sensor 1 Answer

Any help or ideas out there. Don't want to keep throwing parts at it.

2004 Ford F-150 FX4 SuperCrew 4WD

-

Maintenance & Repair
I HAVE A 95 F-150 302 AUTOMATIC 4X4 IT SHUTTERS WHEN DOWNSHIFTING AT LOW SPEEDS AND AT AN IDOL , IT SPARK KNOCKS AND LOOSES POWER WHEN PULLING HILLS, I HAVE CHANGED THE TORQUE CONVERTER, COMPLETE T 21 Answers

TUNE UP, DISTRIBUTER, COIL, MASS AIR FLOW SENSOR, IDLE SENSOR,FUEL FILTER,AND CLEANED THE THROTTLE BODY. CAN NOT FIGURE IT OUT . HAS ANYONE HAD THE SAME PROBLEM AND ANY ADVICE ON POSSIBILITIES ? I WOU...

1995 Ford F-150

-

Maintenance & Repair
I have a 1977 ford f150 with a 351 engine in it. It dies sometimes and has trouble starting again, as if fuel isnt getting to the carborator. I have replaced the tank,fuel pump, fuel filter at engine and behind pump. what could be the problem? I am a frustrated 17 year old wanting to know how to fix his truck 7 Answers

It dies sometime and has trouble starting. I have replaced the fuel tank, fuel pump, fuel filters behind pump and on engine. as if no fuel is reaching the carborater but when i check if lines are push...

1977 Ford F-150

-

Maintenance & Repair

Own this car?

Share your experience with others.

2002 Ford F-150

Write a car review

Review another car

Used Chevrolet Silverado 1500

4,153 Great Deals out of 130,995 listings starting at $1,000

Used GMC Sierra 1500

1,827 Great Deals out of 66,006 listings starting at $875

Used Toyota Tundra

1,075 Great Deals out of 32,148 listings starting at $2,650

Used Ford F-250 Super Duty

1,400 Great Deals out of 42,029 listings starting at $2,000

Used Toyota Tacoma

1,930 Great Deals out of 32,042 listings starting at $2,295

Used Dodge RAM 1500

86 Great Deals out of 1,605 listings starting at $995

Used Ford Mustang

923 Great Deals out of 22,585 listings starting at $783

Used Ford Ranger

598 Great Deals out of 11,779 listings starting at $1,999

Used Chevrolet Silverado 2500HD

1,069 Great Deals out of 30,535 listings starting at $3,800

Used Ford Explorer

2,194 Great Deals out of 62,945 listings starting at $950

Used Toyota 4Runner

1,171 Great Deals out of 18,499 listings starting at $1,800

2024 Ford F-150 For Sale

3 Great Deals out of 51,978 listings starting at $27,865

2023 Ford F-150 For Sale

670 Great Deals out of 23,927 listings starting at $29,995

2022 Ford F-150 For Sale

554 Great Deals out of 6,084 listings starting at $18,999

2021 Ford F-150 For Sale

858 Great Deals out of 9,263 listings starting at $17,990

2020 Ford F-150 For Sale

608 Great Deals out of 6,116 listings starting at $8,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.

I have a 2002 F-150, 4.2 V6. It has erratic idle when stopping at lights and stop signs. I have replaced )2 sensors, IAC, TPS, plugs and wires and cannot rectify the problem.

2 Answers

Your Answer:

Own this car?

Share your experience with others.

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

Know more, shop wisely

Related Models For Sale

Used Cars for Sale

I have a 2002 F-150, 4.2 V6. It has erratic idle when stopping at lights and stop signs. I have replaced )2 sensors, IAC, TPS, plugs and wires and cannot rectify the problem.

2 Answers

Your Answer:

Related Questions