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1988 Jaguar Vanden Plas engine surges

Tiny
BUNCHY
  • MEMBER
  • 1988 JAGUAR VANDEN PLAS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 115,000 MILES
Engine surges and runs very rough, when put in gear will hardly pull itself

Thanks
P.S. Had a new fuel pump and filter not long ago.
Saturday, June 5th, 2010 AT 5:11 PM

5 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Was the tank flushed when the pump was done? Have you had the injectors cleaned? Check for any vacuum leaks, check for any unresolved fault codes in the ECU, check plugs and leads, start here.

Mark (mhpautos)
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Saturday, June 5th, 2010 AT 8:14 PM
Tiny
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  • 3 POSTS
Tank was flushed, new plugs and wires. Cpu showed code 2 Mass air flo, cleaned leads, code no longer showing. Whatever happened was instant as car was running perfect.
Thanks
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Sunday, June 6th, 2010 AT 8:02 PM
Tiny
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  • MECHANIC
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May be a vacuum leak, have you checked all vacuum lines, can you hear any odd sucking? Air noises?

Mark
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Sunday, June 6th, 2010 AT 9:25 PM
Tiny
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  • 3 POSTS
Vaccum lines appear to be ok, no sucking noises. If you attemp to excellerate fast, you get a backfire.
Thanks
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Saturday, June 12th, 2010 AT 3:59 PM
Tiny
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  • MECHANIC
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This can often be faulty plugs & leads, check these.

Mark
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Saturday, June 12th, 2010 AT 7:47 PM

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