Question about 2000 Ford Mustang

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Hesitation when excelarating while driving

Hesitation while driving when I give it gas it wants to hesitate like it needs a tune up but ive replaced the plugs,wires,coil pack,maf sensor and ambient temp sensor but its still doing it.i took it to autozone they put the computer on it and it said I had a misfire on the first cylinder but I cant figure out why? help please!!!!

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  • Ford Master
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Check compression in #1. A cylinder needs gas, spark, and compression to fire. Check spark with a calibrated spark tester. It could be an injector problem, so check for pulsing of the injector. Does the spark plug show wetness after being cranked over?
The compression in #1 should be within 75-80% of the highest reading cylinder.

Posted on Mar 23, 2014

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Posted on Jan 02, 2017

  • 58 Answers

SOURCE: my truck will miss and hesitate at highway speeds

Check your fuel filters, many Fords have 2 the second one is mounted on the frame and takes a cartridge.

Posted on Jan 12, 2009

  • 2 Answers

SOURCE: hesitates and sputters while driving only...idle is fine

i dont think an 02 winstar has a cap and rotor.. im sure its on a coil pack

Posted on Jul 07, 2009

  • 33 Answers

SOURCE: I HAVE A 1998 FORD EXPLORER AND IT HESITATES ON

Try running some fuel injector cleaner through your fuel tank. What you may have are a couple of plugged or missfiring fuel injectors. I would suggest checking all of your wiring to your injectors to insure good connection, replace your fuel filter and check for vacuum leaks.

Posted on Jul 20, 2009

1fastbob
  • 301 Answers

SOURCE: my 2002 mustang GT hasits a misfire on cylinder 3

Clean the mass air flow sensor.

Posted on Nov 01, 2009

  • 5481 Answers

SOURCE: Hi I have a 2004 Ford Explorer 6 cylinder 4.0

Hello, It seems you have done a lot in trying to fix this. My first idea is that it is a pickup sensor for the camshaft or crankshaft. The firing order of your engine is 1 4 2 5 3 6. You are having misfires in 3 consecutive cylinders 4,2,5. This would seem to mean that the distance to trigger the firing is greater on 4,2,and 5 than on the other 3 cylinders. This can mean you have a lopsided situation on either the crank pulley or cam. You should see if the crank pulley is tight as well as the cam or if you can better adjust the 2 sensors.

Next, the Intake system can have a bad gasket. Use a water spray bottle and with the engine running, put a mist on the Intake gasket. If you have a change in RPM, then you have found a leak. This would explain why the same 3 cylinders are always misfiring. Some of the V-6 models used sandwiched 2 piece manifolds and the gasket between the upper and lower half would deteriorate over time. Some engines used "runners" between the Intake manifold and heads which could gum up over time. Just a cleaning operation if you are putting on a new Intake gasket anyway.

I hope my solution is very helpful and would like to know what you finally found as the problem.

Posted on Aug 03, 2011

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