Question about 1990 Dodge Dakota

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EGR Valve 1990 Dakota

Just wondering if anyone knows where the EGR valve is on a 1990 3.9l Dakota.

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Its attached to your intake ...it will look like a minature brake booster a small diaphram with vaccuum hoses attached ... if you get it off blow out the opening they get clogged from using 87 oct
check your vaccuum pressure as well ...rule of thumb you need 11-14 psi

Posted on Jul 28, 2009

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1 Answer

Wher egr value located


Here's a link to a picture of what the EGR look's like,it's at the back of the engine,easy to remove.When bad, vehicles can experience poor engine performance, poor idle, high NOx emissions, failed emissions test, hesitation, engine surging http://www.autozone.com/emission-control-and-exhaust/egr-valve/duralast-egr-valve/volvo/960/1995/6-cylinders-9-2-9l-efi-dohc/857098_162245_0

Sep 27, 2015 | 1995 Volvo 960

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I have a 1990 chevy corsica lt 6cyl 3.1 multi port fi dis ignition. the problem is it starts and idles fine, but when i push the gas it dies. before i changed some parts it wouldnt even start. ive changed...


You can manually test the egr valve by pushing up from underneath it and seeing if the spring loaded valve moves and re seats itself. If no, it's bad.

Apr 27, 2012 | Chevrolet Cars & Trucks

2 Answers

I have a 1990 Dodge Dakota. i replaced battery,altenator,plugs,wires,starter,distributor cap and rotor,pick up coil,and the egr valve but the ttruck wont start any suggestions?


Thanks for choosing FixYa and welcome. I would look at the timing belt/chain. Have you ruled out the fuel pump, fuel system? May be the computer.

May 13, 2011 | 1990 Dodge Dakota

2 Answers

Having trouble locating the erg valve


Please let me know if you have more questions, and thanks for using FixYa.

3.0 liter:

jturcotte_1407.gif

SHO:

jturcotte_1408.gif

3.8:

jturcotte_1409.gif

2.5:

jturcotte_1410.gif

Apr 02, 2011 | 1990 Ford Taurus

1 Answer

I have a 2005 Dodge Dakota V8 4x4 My check engine light turned on. I took the truck to Autozone to have them hook up the machine and see what the problem was. It said I have a bad EGR Valve. I havent...


It can affect mileage, but it might not be the valve. EGR systems tends to get clogged by gunk. Take the valve off and see how dirty things are. If the system is clogged up, take apart as much as you can to clean it up. You can test the valve for operation with a good scanner (autozone doesn't do this--they just tell you the code). Here are instructions from autozone.com:

Linear EGR Valve Diagnosis
The linear EGR valve diagnosis procedure varies depending on the vehicle make and model year. Always follow the recommended procedure in the vehicle manufacturer's service manual. The scan tester may be used to diagnosis a linear EGR valve. The engine should be at normal operating temperature prior to EGR valve diagnosis. Since the linear EGR valve has an EVP sensor, the actual pintle position may be checked on the scan tester. The pintle position should not exceed 3% at idle speed. The scan tester may be operated to command a specific pintle position, such as 75%, and this commanded position should be achieved within two seconds. With the engine idling, select various pintle positions and check the actual pintle position. The pintle position should always be within 10% of the commanded position. When the linear EGR valve does not operate properly:
  • Check the fuse in the 12 V supply wire to the EGR valve.
  • Check for open circuits, grounds, and shorts in the wires connected from the EGR valve winding to the PCM.
  • Use a digital voltmeter to check for 5 v on the reference wire to the evp sensor.
  • Check for excessive resistance in the EVP sensor ground wire.
  • Leave the wiring harness connected to the valve, and remove the valve. Connect a digital voltmeter from the pintle position wire at the EGR valve to ground, and manually push the pintle upward. The voltmeter reading should change from approximately 1 V to 4.5 V.
436f9a1.jpg Linear EGR valve circuit. Courtesy of Chevrolet Motor Division-GMC.
If the EGR valve did not operate properly on the scan tester and tests 1 through 5 are satisfactory, replace the valve.

Here is what your valve looks like:
If you have more questions, please let me know.
a65cb7d.jpg

Oct 13, 2010 | 2005 Dodge Dakota

1 Answer

1990 f-150 2WD 5.0L(302) valve cover changing


plenum and egr also check the coolant hoses to the bottom of the intake

Mar 04, 2010 | 1985 Ford F150

1 Answer

1990 Dodge Dakota Smog Issue


Question

PPM of Nox or Co or HC?????


The base of the EGR and the EGR air passage tube will collect carbon over the years.

Most car over 65,000 will fail Nox and has high CO because of the partly block passage.

The only way to clean to the air passage tube is with a lot of WD-40 or similar cleaner.

The EGR valve can be clean or replace under $68 ////gasket for around $3.

Make sure there is NO LEAK when you put the EGR valve back in place.


Please post what PPM is failing on reply.





Jul 06, 2009 | 1996 Dodge Caravan

2 Answers

MIL indicates cylinder misfire on 1, 3, and 5


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

Jun 03, 2009 | 2001 Dodge Dakota

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