I have p0420 on my 06 pont gp gt. it mostly comes on after I slow down after highway

Question 1

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When accessing a highway from a frontage road access should you begin accelerating as you approach the highway or wait until you are on the highway to incresse speed

Accelerate while on the "on ramp" until you reach the speed limit + posted on the highway... this way when you reach the highway you will be going the same speed(or close) as the other vehicles ..you can blend in easily.. and NOT cause an accident by going too slow!! On the way down the "on ramp".. start looking at the traffic coming on the highway to find an opening to ease into safely. Use your mirrors and BLINKER... (its easier to slow down a little than speed up)

Jun 06, 2017 • Cars & Trucks

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1answer

Fuel pump 97 pont.gp does not work

Do you have voltage and ground at the connector for the gas tank ?

Aug 05, 2012 • GMC Yukon Denali Cars & Trucks

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Where can I find a picture of a 2000 pont GP location of blower resistor

IT IS UNDER THE PASSENGER SIDE OF THE DASH PANEL IF YOU LOOK AT THE BLOWER AND FOLLOW THE WIRE IT GOES TO THE RESISTOR (IT IS BEHIND THE BLOWER MOTOR BACK AGAINST THE FIREWALL ) SHOULD BE THREE SMALL BOLTS ONE IS A PAIN TO GET TO

Oct 20, 2010 • Pontiac Grand Prix Cars & Trucks

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1answer

95 subaru warms up fine but when you hit the highway temp goes back to cold until you slow down again --radiator is full

Most likely your thermostat is stuck open. When you are at highway speed the air flowing over the radiator is over-cooling the coolant. Normally when it's cold outside the thermostat will close, reducing flow through the radiator. It's an easy fix, and not too expensive.

Dec 14, 2009 • 1995 Subaru Legacy

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1answer

95 Pont Gran Am GT 2.4 Quad Replaced: FUEL PUMP

Fuel Filter

Aug 01, 2009 • 2000 Pontiac Grand Am GT

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1answer

Pont cd reads e20 wont play tried cleaning

Cleaning with what-a cleaning CD? If so, she's most likely toast now, sorry :o(
E20 is a read error...could be bad media (ie CD format like from your PC). Otherwise, unplug the changer and plug back in.
Good Luck

Jun 14, 2009 • 1999 Pontiac Grand Am GT

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1answer

94 Z28 runs rough until I cruise on the highway a few miles at a steady rpm and then the service engine light comes on and then it smooths out until I slow down to get off the highway..why?

1. Vacuum leaks
2. Leaking egr or plugged pcv.
3 Air filter clogged
4.leaking head gasket
5. Timing chain worn, or jumped a cog.
6. Camshaft worn.
7. Valves burnt or leaking.
8. ignition system
9. injectors clogged
10. Idle control system

You'll just have to keep eliminating them, from cheapest to most expensive.

Jun 13, 2009 • 1994 Chevrolet Camaro

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1answer

1997 pont. GP model 3.8 gt no spark

take module to advance or oreillys they have a machine to test module for free.watch it being done an see results remember they do sell parts

Jan 26, 2009 • 1998 Pontiac Grand Prix

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1answer

2001 Grand Prix GT 3800 series engine

The best solution is to do a complete tune up with new spark plugs, wires, fuel filter, air filter, pcv valve and oil change.. If this still happen I would get some fuel injector cleaner, or use marvel mystery oil in both your oil(crankcase) and gas tank. You can get mystery oil at walmart..its in a red bottle with black label.

Jan 18, 2009 • 2001 Pontiac Grand Prix

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2answers

When ever i shift into 1st at a slow roll it grinds as well as everytime i shift into second and sometimes third but most problems come for 2nd gear. i can push the clutch in and insted of pulling straight...

the clutch is sticking could be worn out or needs adjusting

Jul 29, 2008 • 1994 Hyundai Excel

Question 2

Anonymous

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Posted on Feb 01, 2011

Anonymous

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Here is the trouble tree for that code it is most likely a bad cat but follow the trouble tree to see where it lead's you.
DTC P0420 or P0430

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic Starting Point - Vehicle
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0420

* Catalyst System Low Efficiency Bank 1

Important: A new converter with less than 100 miles on it may set DTC P0420 or P0430 due to out-******* of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition. Hope this helps

Anonymous Apr 13, 2013

Where is the tree you were talking about?

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Answer 2

amyfan

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Posted on Apr 11, 2014

amyfan

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Hi, guy,this is a PDF can help you.Diagnostic Trouble Code Table

Diagnostic Trouble Code Table

aobd2shop.com

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I have p0420 on my 06 pont gp gt. it mostly comes on after I slow down after highway

2 Answers

Anonymous

amyfan

Add Your Answer

Attachments: Added items

Related Questions:

When accessing a highway from a frontage road access should you begin accelerating as you approach the highway or wait until you are on the highway to incresse speed

Fuel pump 97 pont.gp does not work

Where can I find a picture of a 2000 pont GP location of blower resistor

95 subaru warms up fine but when you hit the highway temp goes back to cold until you slow down again --radiator is full

95 Pont Gran Am GT 2.4 Quad Replaced: FUEL PUMP

Pont cd reads e20 wont play tried cleaning

94 Z28 runs rough until I cruise on the highway a few miles at a steady rpm and then the service engine light comes on and then it smooths out until I slow down to get off the highway..why?

1997 pont. GP model 3.8 gt no spark

2001 Grand Prix GT 3800 series engine

When ever i shift into 1st at a slow roll it grinds as well as everytime i shift into second and sometimes third but most problems come for 2nd gear. i can push the clutch in and insted of pulling straight...

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2005 Grand Prix

When accessing a highway from a frontage road access should you begin accelerating as you approach the highway or wait until you are on the highway to incresse speed

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Trustworthy Expert Solutions

I have p0420 on my 06 pont gp gt. it mostly comes on after I slow down after highway

2 Answers

Anonymous

amyfan

Add Your Answer

Attachments: Added items

Related Questions:

When accessing a highway from a frontage road access should you begin accelerating as you approach the highway or wait until you are on the highway to incresse speed

Fuel pump 97 pont.gp does not work

Where can I find a picture of a 2000 pont GP location of blower resistor

95 subaru warms up fine but when you hit the highway temp goes back to cold until you slow down again --radiator is full

95 Pont Gran Am GT 2.4 Quad Replaced: FUEL PUMP

Pont cd reads e20 wont play tried cleaning

94 Z28 runs rough until I cruise on the highway a few miles at a steady rpm and then the service engine light comes on and then it smooths out until I slow down to get off the highway..why?

1997 pont. GP model 3.8 gt no spark

2001 Grand Prix GT 3800 series engine

When ever i shift into 1st at a slow roll it grinds as well as everytime i shift into second and sometimes third but most problems come for 2nd gear. i can push the clutch in and insted of pulling straight...

Not finding what you are looking for?

2005 Grand Prix

When accessing a highway from a frontage road access should you begin accelerating as you approach the highway or wait until you are on the highway to incresse speed

Related Topics

Ask a Question

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