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Where is the analyzer plug in? - 1990 Ford F150

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It doesnt have one its too old

Posted on Oct 14, 2010


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94 accord brake light. And check engine light on

Relax Wolfie,
Take your accord to Auto Zone.. they will plug their diagnostic analyzer into the car and tell you what wrong - FOR FREE!! .. and probably have the parts to fix it!!

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It really depends on your car. some older models have a screw adjustment, others have a computer that controls that. In that case you will need the plug in analyzer.

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unplug it, remove it and take it to the auto parts store and they can plug it in to their analyzer and tell you if it is good or bad.

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1999 ford expedition

Have the battery load tested. Have the Diodes checked in the Alternator. What can sometimes happen is the small plastic plug-in that supplies power to the stator will ride up inside the plastic clip. What mechanics have done is work the wire out of the plastic clip.and secure the wire on the tab inside the Alternator. You would then slide the plastic back down the wire and snap click it into place.

Should you check out good for both the battery and Alternator, you need to find a short. With several circuits staying "live" at all times, this is not an easy diagnosis. Ford has some Circuit analyzers which fit in-between the major PIN connectors and some of these connectors have up to 100 pins. These Circuit analyzers test all the plug connectors at 1 time. The time savings are major.

You can individually test individual circuits. You probably have a Relay staying on when the ignition is shut off. It will be time consuming to find.

Mar 19, 2014 | 1999 Ford Expedition

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The "Check Engine" light does not go out. The

You can go to any good auto parts store and ask to borrow their ECM analyzer. Find the connecting plug (usually by the drivers left knee), connect the analyzer and turn your key to the ON position (do not start the car though). The ECM analyzer will read the codes in your cars computer and tell you why the light is on. You will also have the option to RESET CODES so you can see if the light resets and stays out.

Common problems (usually identified by a display of "factory code XXX: on the ECM analyzer) are:
A bad "batch" of gas.
Loose fuel filler cap.
Misfire (usually caused by using other than premium gas in an engine such as yours).

If it is something wrong with your emission system, the ECM analyzer will point you in the right direction. Good luck!

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Start the car take a squirt bottle of water and squirt the coil to see if it starts to miss again or see sparks jump.

Aug 01, 2009 | 2002 GMC Envoy

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Put on analyzer number 4 cycliner is missfiring

Replace the spark plugs and wire set and add fuel injector cleaner in the gas tank for the next three fill up's. If money is tight try swapping the spark plug wire with another wire and see if the missfire moves, but before you do that inspect the spark plug's condition. Remove the spark plug to see if it's fouled with carbon which is a run rich condition and if there was detonation the plugs will have a worn or damaged electrode. Keep me posted, be glad to help.

Jun 30, 2009 | 2000 Ford Contour

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Engine Light is on when i drive

You'll have to run diagnostics on it. An analyzer is connected to the car through a cable and it analyzes the computer and spits out codes that tell you why the light is on. Auto shops do this, or you can purchase a home diagnostic analyzer at an auto parts store.

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Engine miss fire

If this is a truck with The coil on Plug setup, I would suggest replacing the #7 ignition coil and the plug.

I’m happy to assist further over the phone at

Aug 09, 2008 | 2000 Ford F150 Flareside SuperCab

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