Diagrams of the engine

https://workshop-manuals.com/chevrolet/el_camino/v6-229_3.8l/maintenance/tune-up_and_engine_performance_checks/firing_order/component_information/specifications/ignition_firing_order/

P0663 - Intake Manifold Tuning Valve (IMTV) Control Circuit Open - Bank 2 Description: The IMTV system is monitored for failure during continuous, key on engine off (KOEO), or key on engine running (KOER) self-tests. The test fails when the signal is more or less than an expected calibrated range. Possible Causes:

• IMTV signal circuit open, shorted to PWR GND or SIG RTN
• Damaged IMTV actuator

Diagnostic Aids: An IMTVM PID reading may indicate a fault. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test HU . Do you know what a wiring diagram is an how to use a DVOM - digital volt ohm meter to test electrical circuits ? Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. Year , make , model an engine size. Under system click on engine ,then under subsystem click on fuel controls . Click the search button then the blue link's one at a time . Scroll down through the diagrams till you find the correct one . Test the circuit from the PCM to the tuning valve .

Do a google images search for 2000 mazda mpv engine diagram and you will see lots of options. You could fine tune that to searching for 2000 mazda mpv cooling system diagram if you prefer. It will come up with a lot of small pictures if you click on the picture it will enlarge. If you then click (to the right of the picture) on the name of the site it is from or the link Visit Page it will take you to the page of the website where the diagram is from. This allows you to get more detailed info about which ever system you currently need to look up (for future use also).

what type of diagram are you looking for

http://www.autozone.com/autozone/repairinfo/specifications/specificationsMain.jsp?childCatName=Firing+Order&childCatId=26200242&categoryNValue=26299999&categoryNameForTitle=Ignition+and+Tune+Up&categoryName=IGNITION+AND+TUNE+UP&childCategoryNameForTitle=Firing+Order

http://www.autozone.com/autozone/repairinfo/specifications/specificationsMain.jsp?childCatName=Firing+Order&childCatId=26200242&categoryNValue=26299999&categoryNameForTitle=Ignition+and+Tune+Up&categoryName=IGNITION+AND+TUNE+UP&childCategoryNameForTitle=Firing+Order Here's a diagram,click on link.

if you go to autozone.com they have all the diagrams for this kind of stuff hope this helps

If you are referring to a "tune-up", then for a complete tune-up for your vehicle you will need to replace the ignition wires (spark plug wires), spark plugs, air filter, the fuel filter, and also the pcv valve. There is no distributor in your vehicle so that is all that a complete tune-up for your vehicle will consist of. Here is a firing order diagram for both engines that were available for that vehicle to help assist you replace the ignition wires, and let me know if you require any further assistance.

2.5 Liter Engine



3.3 Liter Engine

How well does the vehicle run?

Assuming that the engine did pass the EGR function test on the emission test results, and the MIL (Malfunction Indicator Light) or check engine light is not on when the engine is running, and if you are not sure when the last time it was that the engine had a complete tune-up, with distributor cap, ignition rotor, spark plugs, spark plug wires, air and fuel filters, then a complete tune-up would certainly help, and if the engine oil and oil filter have not been changed in a while, then they should also be changed before an emission test because long used engine oil traps carbon and it will show up as higher CO on the emission test because the emission analyzer will be able detect the higher CO from the engine oil through the PCV valve.

However, it would seem from those HC readings that there is a vacuum leak, and carefully inspect all of the vacuum lines for any cracks or damage, (especially the vacuum line to the fuel pressure regulator) because cracks in the vacuum lines seem to like to hide underneath the lines.

The emission label under the hood should have the vacuum line routing diagram printed on it, and the vacuum lines should all be checked to be certain that they are all connected correctly.

Here is the firing order diagram for that vehicle to help assist you tune-up the vehicle.

WELL THE FIREING ORDER IS 1-5-3-6-2-4 #1 IS CLOSES TO CRANK SHAFT PULLY HOPE THIS HELPS