Question about 1990 Ford Escort

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Car does not pass emmsion co are to high 13.40 should be below 12.00 how do I do this

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I have seen some gas addditive stuff at the autoparts store that can temporaily get the numbers better for a test.

Posted on Oct 11, 2010

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My 2000 F150 just passed emmsion 2 weeks ago let my son drive it started to run bad cheek engine lite came on codes were P0743,P0755,P1747,P0443,P1451,P0135,P0141,P0155,P0161and P1409?Help


with that many fault codes each one with an ECM as a possible cause , I suggest that you check items like battery voltage and charge rate, ground wires and terminals , harness connections at the ECM for water and corrosion
or substitute the ECM with a know serviceable unit to see if the fault codes come back

Mar 21, 2017 | Cars & Trucks

1 Answer

C15001993 truck 4.3 v6 Failed Emissions HIGH CO again


Sounds like you lost O2 Control

Check fuel trim & data with professional
scanner & such

You done as far as working at home, you did all
you can

You have a rich condition (CO)

Seems as though the coolant sensor is not working &
your in open loop

Mar 05, 2013 | Chevrolet C1500 Cars & Trucks

1 Answer

1986 NISSAN 300ZX FAILED EMISSIONS HIGH CO


I would replace CATalitic converter, this car is old, plus a tuneup is 100% necessary , spark plugs wires, ditributor cap & rotor, plus both the air & fuel filters need replaced. change oil & filter. then you will pass emissions test. and your car will run like its suppose too. if you don't do all this , then buy a new car !

Feb 02, 2013 | 1986 Nissan 300ZX

2 Answers

Golf 1.4 2003 very high emissions


Replace your oxygen sensors.
murf427

Aug 29, 2012 | 2003 Volkswagen Golf

1 Answer

Car failed emmsion test


It failed the test and you didn't have any check engine codes?

Was this a tailpipe test? What part did you fail? If you have high HC's than the car needs a tune up and a injector leakdown test. The injectors start to leak when they are worn and can increase unburned HC's.

High CO emissions indicates incomplete combustion. A new air filter and a tune up can help with this. Air flow sensors going bad can sometimes add to this problem.

It is high NOx? That would be a catalyst problem and may require a replacement. Sometimes you can just run a fuel system cleaner through a fresh tank of gas to help clear things out. Ever heard of the product called "Guaranteed To Pass"?

If your engine is smoking like the rings or the valves are worn out...you might need to rebuild or replace the motor.

If you have engine codes run them down to the bad components and replace them. O2 sensors are always suspect at times like this.

Good luck and be safe!

Dec 12, 2009 | 1999 Chrysler 300M

1 Answer

High CO on state emmision testing


High CO is caused by too much fuel. The carburetor needs adjusted or rebuilt.

Nov 26, 2008 | 1986 Toyota Land Cruiser

1 Answer

Failed emissions high co on Nissan Maxima


You could have a dirty air filter, if so change it. Check that your oil is just below maximum ( I normally have the oil just above 3/4 on the dip stick). Also you could add Stop Smoke to your oil to help cut down on the CO's. Also clean out all your breather pipes.

Sep 17, 2008 | 1998 Volkswagen Golf

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