Question about 1990 Ford Probe

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90 ford probe gl

4 cylinder car feels like its missing changed spark plugs then it ran worse and now it over heats.

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  • Anonymous Mar 22, 2014

    car misses on cylinder one when warm

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Hi, check that you put H T Leads on correct plug, its easy to get them wrong if all were disconected at the same time. If they are correct then i think you may have head gasket trouble, test compression on each cylinder to determin this,All the best,Phil

Posted on Sep 10, 2008

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Posted on Jan 02, 2017

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Injector no.3 control circuit code came up.change injector and spark plug.vehicle has miss,no code


check the injector is working if you hold on to it you should feel a pulse it can be probed with a led light if you have one .the cable may have no power to it. if it checks out ok ,make sure there is a good spark at the plug. if ok check cylinder for compression.

Aug 15, 2014 | Jeep Grand Cherokee Cars & Trucks

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I bought a used 1995 for escort. it has a miss an is getting worse. i changed the spark plugs. i took the spark plug wires off one at a time. 3 of them made the miss worse and 1 did nothing. it's


Not without more testing.
It could be a fuel problem or something mechanical like a valve.
You would do a compression test next to verify all 4 cylinders have normal compression.
If they do, and that 4th plug wire was providing spark to the plug, I would expect you to find something going on with the injector.

Feb 25, 2013 | 1998 Ford Escort

1 Answer

1988 Ford F350 460,fuel injected, Wont start,,, Coil only sends spark once per revolution of the rotor


Hello Donn,

UN-fortunately 1988 is WELL before the OBD
(on board diagnostic)... DIAGNOSTIC TROUBLE
Codes (DTC) got standardized...

So DAYS can be wasted looking for commonality...
(troubles).

Rather than assuming your spark, timing, fuel, ECU...
Oxygen Sensors. INJECTORS are all askew...

I would suggest that if you SATURATED YOUR
HEADER BOLTS with LIQUID WRENCH...

and opened you EXHAUST ahead of your catalytic
converters... ahead of your mufflers... you engine would run...

Obviously DANGEROUS to operate in that condition... at
least you would know what had to be REPLACED before
you can operate your vehicle SAFELY.

If you decide the job is a bit too much... at least
check out your PURCHASE cost of a replacement
CAT and/or MUFFLER...

Try rockauto
http://www.rockauto.com/en/catalog/ford,1988,f-350,7.5l+460cid+v8,1126437,exhaust+&+emission

1988 FORD 350 7 5L 460cid V8 Catalytic Converter RockAuto

1988 FORD 350 7 5L 460cid V8 Muffler RockAuto

Mar 16, 2017 | Cars & Trucks

1 Answer

Missing when you first crank it. 92 Ford Ranger 2.3


do a compression test on all cylinders, check all 4 spark plugs.

Oct 01, 2012 | Cars & Trucks

1 Answer

Got a 89 ford festiva , we just rebuilt the motor and the car ran good for 3 days then started missing. Did compression check and all the same across the board. all plugs are getting spark but when you...


rpm will drop when u pull a spark plug wire, i'm assuming this does not happen when u pull # 4 plug wire. This tells me # 4 jug is dead, no compression and not firing.

Sep 21, 2011 | Ford Festiva Cars & Trucks

1 Answer

Firing Order diagram for 2006 Ford Explorer


Hope this helps. The ignition coil:
  • changes low-voltage pulses from the PCM to high-voltage pulses.
  • fires 2 spark plugs simultaneously.
  • has 3 transformers.
    • One transformer fires the spark plugs for cylinders 1 and 5
    • One transformer fires the spark plugs for cylinders 2 and 6
    • One transformer fires the spark plugs for cylinders 3 and 4
Spark plug wires:
  • carry high-voltage pulses from the ignition coil to the spark plugs.
The spark plugs:
  • change high-voltage pulses to spark at the gap, which ignites the fuel and air mixture.
The firing order is 1-4-2-5-3-6.

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Jun 06, 2010 | 2006 Ford Explorer

2 Answers

My check engine light is on and the code is reading p0304 what could be the problem


You have a Misfire at Cylinder #4 meaning:
Dirty, fouled or malfunction Spark Plug at #4 Cylinder. Remove the Spark Plug and check the igntion (spark end).
Ignition (Spark Plug) Wire malfunction for #4 Cylinder.
Misfire from the Coil/Distributor at the #4 connection from Cylinder #4.
Get a Spark Plug/Wire/Coil/Distributor tester and check the Spark Plug, Wire and Coil.
I always recommend changing everything in sets meaning: Change all Spark Plugs and Wires.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

Feb 18, 2010 | 2003 Ford Expedition

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