Question about 1988 Ford Ranger

1 Answer

#4 cylinder misfire, 2.0 litre 4 cylinder.

Replaced plugs, wires, rotor cap, ignition module

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  • feemer716
    feemer716 Feb 19, 2012

    This truck has a carburetor. Would a distibutor pickup assembly cause 1 cylinder to misfire. Have not checked compression yet. Do you know what the compression should be.

  • feemer716
    feemer716 Feb 21, 2012

    Yes this was helpful. I wont be able to get compression checked till this weekend. I for got to add it doesn't do this all the time. Seems like the colder the weather is, it runs fine. above 30 it runs bad after engine warms up. Doesn't do it when is engine is cold. When i come to a complete stop is when you really notice it. Sometimes at 55 mph you can fell a big ****. Could their be something getting hot that would cause this after engine warms up?, or could this be from a broken ring in the cylinder. Sorry i wasn't more detailed at the start. Again thanks for your responses.

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  • Ford Master
  • 5,332 Answers

Check compression. If that is fine than swap the Number four injector with number one. If the misfire follows the injector replace it. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

Posted on Feb 19, 2012

  • feemer716
    feemer716 Feb 19, 2012

    This truck has a carburetor. Would a distibutor pickup assembly cause 1 cylinder to misfire. Have not checked compression yet. Do you know what the compression should be.

  • Jeremy W.
    Jeremy W. Feb 19, 2012

    If it where causing one cylinder to misfire than the only way it could do that is if there where no spark to that cylinder. That should be easy enoug to check.

    I don't know the compression spec off hand but the affected cylinder should be within ten percent of the other cylinders.

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SOURCE: P0304=misfire in cylinder 4. coil?

not coil coil it wouldnt fire at all it is either a plug or a wire replace the wire and plugs and that will fix it

Posted on Oct 06, 2008

emissionwiz
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SOURCE: 1995 Ford Bronco 172 EGO not switching lean bank1- jerks when run

Have u checked for vacuum leaks or poss leaking EGR valve? use carb spray around the upper intake manifold where it bolts to the lower manifold, spray vacuum lines where they are connected to the engine vacuum ports, the idle speed will change if u hit a leak, as far as the EGR valve goes see if it gets hot at idle, if it does it is leaking, if all checks ok replace the O2 sensor, but i suspect u will find a leak at the upper intake plenum.

Posted on Jan 10, 2009

chuck943
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SOURCE: where is the ignition module control located on 1996 ranger 2.3 e

It does not have an ignition control module. The PCM (powertrain control module) fires the coil pack based on signal it recieves from the crankshaft position sensor and the camshaft position sensor.

Posted on Apr 08, 2009

  • 66 Answers

SOURCE: misfire on cylinder 6 at idle

I mention motocraft because too often I hear about challenges with plugs on fords. I too purchased the big buc iridiums and had 6/8 success. Belong to another truck site and read a lot about this and cel's. If the light is flasing in and out this could be a vacuum problem. I belive Relaga is speaking of the two vacuum hose coming out of the intake. One will be right after the MAF and runs to the engine, and the other after IAT sensor and runs toward the throttle body. Take a peek at the intake and ensure it is connected properly and securely. As it runs up toward the throttle body and right after the air filter you run into the MAF sensor. then a vacuum hose, then the Intake Air Temp sensor, then a straight shot to the throttle body. The air intake assembly connects to the throttle body. Check the entire assembly for any leak and those vacuum hoses. What I also suggest is you remove the entire air intake and clean it. First Disconnect the negative terminal on the battery. The sensors disconnect at their wiring harnesses and you do not have to remove the sensor itself (inside tube). As you look inside the intake (once taken apart/off) you will see the sensor (s) inside through the grommet. You can purchase a bottle of CFC MAF/Electronic cleaner at any auto parts store for about $9 and spray the hell out of the sensors like you would spray a cockroach in the face. About 4-5 seconds. NEVER put your finger inside and touch the sensor. The two tiny wires you see are very fragile and delicate and should not be handled. But the spray is fine. Wait 20 minutes for the electronic parts to dry and re-assemble. Double check all connections and reconnect the sensors and then negative cable on battery.

Hey just found this thread for us. Check it out.
http://www.mechanixtrix.com/Article/Article.aspx?ArticleID=45

Posted on May 05, 2009

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SOURCE: Hesitation and stumbling.

Before you do that, check which thermostat it has in it, if it has one that is letting it get too warm or not completely up to temp when the computer think it should be, it would cause this. My 2000 crown vic did the same thing and thats what it was.

Posted on Jul 20, 2009

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