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Pontiac Grand Prix Problems

Fuel injectors can short-circuit on Pontiac Grand Prix

Problem Description and Possible Solution

Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.

(6 people reported this problem)

Pontiac Grand Prix Vehicles With This Problem

RepairPal Fair Price Estimate
$698-$1074
RepairPal Verified
Average mileage: 125,000 (125,000–125,000)
Engine affected: 3.1L V6
4 model years affected: 1990, 1991, 1992, 1993
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Brake problem? Or maybe a faulty head gasket cylinder?
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Viewing 1-1 of 1 comments
Out of the blue while driving at 70Mph 2 injectors became "shorted" per the mechanic's diagnosis.