1989 Toyota Pickup Weird idle issue

1989 TOYOTA PICKUP
150,000 MILES • 6 CYL • 4WD • MANUAL
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DZ NUTZ
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The truck idles fine until you step on the brakes. Then the idle drops and fluctuates badly. No vacuum leaks. Once you unplug the brake switch the problem dissappears. It only does it when the brake lights come on at idle. ECU checks OK and all grounds are good and the harness seems to be in good shape.

Am stumped on this one.

Dz
Feb 26, 2008 at 4:11 AM
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PITBULL123456
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[quote:c00f2d2cd7="Dz Nutz"]Engine Performance problem
1989 Toyota Pickup 6 cyl Four Wheel Drive Manual 150000 miles
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The truck idles fine until you step on the brakes. Then the idle drops and fluctuates badly. No vacuum leaks. Once you unplug the brake switch the problem dissappears. It only does it when the brake lights come on at idle. ECU checks OK and all grounds are good and the harness seems to be in good shape.

Am stumped on this one.

Dz[/quote:c00f2d2cd7]
Mar 4, 2008 at 9:52 AM
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