Question about 1983 Chrysler Cordoba

1 Answer

Poor mileage, runs rich, fails smog

My 1985 F-150 failed smog, CO very high. I suspect the feedback control solenoid, but you can't buy one from a Ford dealer or Autozone. Nothing online either. The local junk yards don't keep that kind of stuff around.

I already replaced the oxygen sensor, installed new manifold gaskets, and fixed some other possible exhaust leaks and a jammed plenum type gadget between the intake and exhaust manifold (it's a very strange design!)

The smog mechanic said replace the carburetor, but I already did that and the new one came with no feedback solenoid. So I had to install the old one on the new carburetor.

I have no options but to junk the thing, but it's a 4x4 supercab long bed, really useful for hauling junk around and going four wheeling in the desert.

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  • Marvin
    Marvin May 11, 2010

    suggest u use the live chat option, this is way to deep for the free forum

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1 Answer

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  • Chrysler Master
  • 27,248 Answers

As it uses a carburettor, set the main jet adjustment to run leaner.

Posted on Mar 18, 2017

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Posted on Jan 02, 2017

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SOURCE: 2003 T&C Solenoid Pack leaks

Depends on where the leak is from,the top or the side with the torx screws,if it's at the top which is usually the problem the gasket is about 5.00 and you have to remove the breather assembly,and the 3 bolts from the top side and wire harness from pack has a 10mm nut holding the harness on,install new gasket,if you remove the torx screws there are 3 springs,cups,and spacers that will fall out so the spacers go into the screw holes and the 3 springs and cans are all the same size so order doesn't matter on these.

Posted on Dec 25, 2008

paulmeloche2
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SOURCE: Heater motor runs on high continuously on 1999 Chrysler 300M

you need blower resister

Posted on Jan 19, 2009

chryslertech
  • 115 Answers

SOURCE: Hard start when cold, running rich, poor fuel economy

Chrysler has a bulletin out for a simular condititon that involves replacing the pcm. Heres the bulletin number 18-005-04. This is only 1 possible cause , Fuel pressure, coolant temp sensor, thottle position sensor all can cause like problems. Seeing sensor values and fuel adaptives with a scan tool helps pin point problems.

Posted on Mar 08, 2009

  • 14036 Answers

SOURCE: I HAVE A 2003 CHRYSLER 300M SPECIAL 3.5HO AND

yep po132 shorted to voltage po152 shorted to voltage.this means lean conditions .you got in take leak .if you get a high voltage conditions you got rich mixture.bad plugs or stop up air filter.

Posted on May 01, 2009

Mustgo
  • 2359 Answers

SOURCE: 2005 Town and Country code P0404 egr

Check for

vacuum leaks on intake manifold,

the air tube between the air filter.

intake manifold vacuum hose.

===
clean throttle plate with Berryman carburator cleaner

SEE sample picture HERE
===

Also remove carbon built up behind the EGR valve and the EGR passage tube.

===

Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.

More un-metered air (leaks) will lean out the fuel mixture.

Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.

At idle,just spray and listen for the RPM surge.

The in-rush of carb clearer will increase the RPM on the motor.

Record the problem spot(s) and address it later.

===

EGR carbon built up require 2+ hours to clean from start to finish.

You will need a new EGR base gasket before your start.

Locate and remove the EGR valve after the vehicle is cool down.

Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.

Remove the EGR valve.

Inspect the location of the carbon built-up inside the valve and the EGR passage tube.

SOAK these areas with WD-40 spary.

You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.

RE-SOAK the carbon and let it sit for over-night will also help.

One the last round,pass a shop vacuum of the EGR valve and the passage pipe.

Install the new EGR gasket and connectors.

Allow the vehicle to warm up outdoor to burn up any remaining WD-40.


Take it for a test drive.


Please rate my answer if it's useful to you.


Cheers,

Mustgo

Posted on Dec 19, 2009

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2 Answers

I have a 1999 Chevy S10 2.2L 4Cyl extreme. I can not find or locate the EGR Valve any where,I am pretty sure it does not have one, I wanted to confirm or discuss this with a fixian expert like myself?


Doesn't have EGR valve . How many miles on the truck ?
What Causes High NO (NOx)? Nitrogen Oxide or NO is created when an engine's combustion chamber temperature reaches over 2500F. Vehicle manufacturers have designed several systems, which when working properly, lower nitric oxide emissions. Below are common failures which may cause your car, truck, van, suv, or motorhome to produce high high nitric oxide. 1. Lean Fuel Mixture - Lean fuel mixtures cause high NOx. A lean fuel mixture exists when less fuel then required is delivered to the combustion chambers or when more air then necessary is added to the fuel. In either case the lack of gasoline needed to cool the combustion chambers down is not present. Combustion temperatures increase causing high nitric oxide emissions. A lean fuel condition may be due to a vacuum leak/s and/or defective fuel control components, such as the Air Flow Meter, Engine Coolant Temperature Sensor, and O2 sensors. Read about Oxygen Sensor.
2. Defective EGR System- The Exhaust Gas Recirculation system is designed to reduce NO. The EGR system consists of an EGR valve, EGR pressure sensor, vacuum hoses, and one or more vacuum switching valves or solenoids. Later model vehicles may be equipped with electronically controlled EGR valves, which do not require vacuum lines or switching solenoids. Electronic EGR systems will have these components built in.
The EGR system's job is to re-route a small amount of exhaust gas back into the intake manifold to help reduce combustion chamber temperatures. As mentioned above NOx is created when combustion chamber temperatures reach above 2500F. By recirculating exhaust gas back into the intake, a small amount of the air/fuel mixture is replaced with inert gas, reducing combustion temperatures. Read about EGR System.
Regular Smog Check STAR Smog Station Smog Check Repair Mile: 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30 Which Type Should I Choose? > " name="submit" style="font-size: 16px; font-weight: bold; border-radius: 0px; border-width: 0px; border-style: solid; border-color: rgb(51, 127, 237); padding: 2px 10px; background: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(0.05, rgb(61, 148, 246)), to(rgb(30, 98, 208))) rgb(61, 148, 246); color: rgb(255, 255, 255); min-width: 195px; min-height: 30px; text-shadow: rgb(21, 112, 205) 0px 0px 0px; box-shadow: rgb(151, 196, 254) 1px 1px 0px 0px;">

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3. Defective Catalytic Converter (CAT) Some vehicle manufactures have designed their cars to operate without EGR valves. Non-EGR equipped vehicles rely heavily on the Catalytic Converter to assist in the reduction of NO. These vehicles have tendencies to develop CAT problems sooner then those which are equipped. If you own a non-EGR equipped vehicle, and have failed the emissions test for high NOx, pay close attention to the Catalytic Converter. Read about Catalytic Converter
4. High Engine Mileage - Over an engine's lifetime, carbon build-up develops in the engine's combustion chambers. The more miles on your engine, the more carbon build-up on the pistons, cylinder heads and valves. Carbon build-up decreases the available space for the air/fuel mixture to combust, and causes higher cylinder compression. High compression results in high temperatures and high NOx. Keep in mind this problem is usually seen in vehicles with over 150,000 miles which have been poorly maintained. The solution to this problem is called De-Carbonizing. It usually costs around two labor hours at a smog check repair station. It will remove a good amount of carbon out of an engine. This will increase combustion space, lower compression and lower NOx.
5. Engine Overheating - Inadequate engine cooling can will high NOx. If your vehicle's cooling system is not working efficiently, (i.e. bad radiator, thermostat, hoses) high NOx will be created. Remember high NOx nitric oxide is created when an engine's combustion chamber temperatures reach over 2500F. You will want to make sure your vehicle's cooling system is working properly, and your vehicle's temperature gauge is always indicating normal.

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1991 Toyota Camry running rich after cleaning the throttle body and replaced the throttle positioning sensor. Checked for vacumm leaks but cant find any


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2 Answers

What causes too much co in youre exhuast


If you have a fuel sensor check that out. Could need replacing. Also when was the last time you changed the air cleaner filter. A dirty air filter will cause that as well as it can't breath properly. Just some ideas.

Jan 01, 2016 | 1989 Jeep Cherokee

1 Answer

Runs rich


How can you fail more than once?

After you fail, you go to a repair shop &
resolve ALL Vehicle issues

Then the shop road tests until all 8 I/M Monitors
run clear ,or there is no reason to go back to inspection
knowing your going to fail.

The problem is the shops & peoples inability to explain
what they need taken care of.

If you never work on the vehicle for years,then you don't
go to inspection,it is a given you will fail

Spark Plugs-every 3 years
Check for Cylinder Misfires
Always install a New Air Filter before inspection
Always install new fresh full sys oil before inspection

Oxygen Senors get replaced every 100,000 miles

Have to road test with professional scan tool & look at
all data,check monitors,fuel trim,O2 etc & check for codes

You have to spend the money to evaluate the vehicle, to see
if it is ready to go for inspection,not many are,their just driven
& neglected

Rich could be-- O2 Sensors,Dirty MAF Sensor,Vacuum Leaks,
Injector Leaks & more,I have seen a dirty air filter fail a car

Mar 27, 2014 | Acura Integra Cars & Trucks

1 Answer

2004 2.0 lt. running very rich


on CO cars, it's below the ECU/PCM
but if you have lambda's, then its not a CO car.
CO cars are missing 02 sensors.
and you said, Sensors, as Plural. got 2?
you failed to post where car is and where it was sold new.
Or VIN.
Engine controls vary by country.
this car may be OEBD type ECU/PCM , "use a scan tool"
and if motor is rich , that can be for 2 reasons.
ENGine is rich
Catalysis dead, or both.
and CO is not HC.
but high CO usually does, give you high CO.

May 31, 2013 | 2004 Suzuki Grand Vitara

2 Answers

1995 Honda Civc failed Emmisions test


Emission test by codes reader? or smog? Any codes?

May 22, 2017 | 1998 Honda Civic

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

1 Answer

1987 Dodge Caravan getting poor gas milage


If you suddenly are getting poor gas mileage your O2 (oxygen) sensor may have failed. The O2 sensor helps dictate how rich or lean the fuel mixture is. If it fails the engine's computer defaults to a rich mixture so not to burn a valve or run too hit. This can be checked and if need be easily replaced. And yes if the van is over-do for a routine tune-up this is always a good investment. Make sure to check the air filter too, if she's dirty the engine will starve for air and get poor mileage.

I hope this may have assited you,
Tom

Apr 15, 2010 | 1987 Dodge Caravan

1 Answer

1991 Honda Accord LX failed emission test on smog test. High CO and HC on 25mph


not enough info. Typically, CO and HC together can be the result of poor fuel control or misfire, or worn components such as O2 sensor or catalytic converter, but without more data, repair recommendations are likely to waste money and not achieve success.

Mar 07, 2009 | 1991 Honda Accord

1 Answer

Failed smog test.


probably retrieved code po700/740? i believe the solenoids are above the valve body in transmission. would leave this repair to trans shop.

Dec 11, 2008 | 1998 Pontiac Firebird

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