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James Waller III Posted on Mar 11, 2014
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Car wont accelerates over 30 mi/hr, gas pedal pushes back on foot engine dose not REV. if a bump is hit it accelerates as normal

No turbo basic

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deon

deon

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  • Posted on Mar 12, 2014
deon
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Sound like you have a bad ignition coil.

  • deon
    deon Mar 12, 2014

    Let me elaborate....I had the exact same issue and didn't get any engine light at first. Then I got P304 and and P1314. I put in new spark plugs and swapped the coils around and the problem was fixed. I have been driving the car for about two weeks now and no issues.

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4 Related Answers

Anonymous

  • 2028 Answers
  • Posted on Aug 21, 2008

SOURCE: 1990 jaguar xj-6 sometimes won't accelerate when pushing on pedal won't go

Yes it could be the mass airflow sensor, it could also be an O2 sensor, or the EGR valve.

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Anonymous

  • 3533 Answers
  • Posted on Jan 03, 2009

SOURCE: transmission replaced in 2004 preowned 2002 x type, now noticed c

first of all I would take to auto zone they will put on tester for you and find out why it is doing this I just recently fixed a 99 mercury sable doing the same thing and I don't know if this is your problem but the vacuum hose behind the throttle body was off

jagjeffery

Jeffery Lewis

  • 329 Answers
  • Posted on Aug 05, 2012

SOURCE: engine wont back off speed when foot taken off accelerator

Jaguar has a cleaning procedure for these cars . The TBI needs to be cleaned and the throttle body relay needs to be changed /replaced. I am sure the Yellow ck engine light is on with a throttle motor code in the PCM

jagjeffery

Jeffery Lewis

  • 329 Answers
  • Posted on Aug 05, 2012

SOURCE: engine wont back off speed when foot taken off accelerator

low voltage to the Throttle Body unit causes this problem along with a dirty buttery fly . Have the throttle body cleaned asper Jaguar cars service spec and replace the throttle body motor relay located in the engine compartment center row 2nd back . Then dissconnect the battery for 30 minutes and reconnect .

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