1985 Volkswagen Jetta Idle OK but poor acceleration

1985 VOLKSWAGEN JETTA
150,000 MILES • 4 CYL • 2WD • MANUAL
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T_JONES
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  • 1 POST
Jetta GL. Starts but very poor acceleration/no power. Seems as if not enough air/choke on. Shop diagnosed as faulty fuel distributor. Replaced (with used) but no improvement. Replaced - fuel pump (plenty of fuel pumps through) /plugs/wires/distributor cap-rotor, no improvement. Did try to swap air flow device (device under fuel distributor) with a different one from a GLI. Won't idle but will rev up. Is this the Mass Air Flow sensor? Could this be the problem or is there some other switch/sensor causing the problem?

Thx
May 19, 2008 at 10:54 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
Could eb the Mass AIrflow Sensor, that will do what you describe. If the other MAF let it rev, but no idle, that would be a good place to start
May 20, 2008 at 8:38 AM
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