1988 Jaguar Vanden Plas engine surges

1988 JAGUAR VANDEN PLAS
115,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BUNCHY
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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.
Jun 5, 2010 at 5:11 PM
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MHPAUTOS
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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)
Jun 5, 2010 at 8:14 PM
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BUNCHY
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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
Jun 6, 2010 at 8:02 PM
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MHPAUTOS
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May be a vacuum leak, have you checked all vacuum lines, can you hear any odd sucking ? air noises?

mark
Jun 6, 2010 at 9:25 PM
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BUNCHY
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Vaccum lines appear to be ok, no sucking noises. If you attemp to excellerate fast, you get a backfire.
Thanks
Jun 12, 2010 at 3:59 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
This can often be faulty plugs & leads, check these.

mark
Jun 12, 2010 at 7:47 PM
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