1984 Pontiac Sunbird Engine Races and Stalls

1984 PONTIAC SUNBIRD
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JCBIKES
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  • 1 POST
I have a 1984 Pontiac Sunbird, 1.8 liter. The problem is that the engine races (revs up) unexpectedly and also chugs like it is losing power. This does not alway occur, but is intermittent. It seems like this happens after it has been running awhile. Anyuway, it was taken to the shop for the same problem, and a new fuel pump and filter were installed. However, a month later it is still having the same promblem. Is this an electrical problem, or related to a computer module? Also, could this be related to a fuel injection problem? Any thoughts or similar problelms from anyone else?
Feb 10, 2006 at 1:15 AM
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MVANNESSJR
  • ✓Experienced Mechanic
  • 223 POSTS
Usually I start out by doing a simple tuneup. Air filter, spark plugs, oil change, clean throttle/carb and see how she runs. Total cost if you do it yourself.... $35-$40... In a 1984 vehicle it certainly can't hurt. :)
Feb 10, 2006 at 2:59 AM
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Suggested Repair

Start with a basic tune-up: replace the air filter and spark plugs, change the oil, and clean the throttle body or carburetor, then recheck how the engine runs.

Conversation Summary

The owner of a 1984 Pontiac Sunbird 1.8L reports intermittent engine racing and power loss or chugging, often after the engine has been running. A shop already replaced the fuel pump and filter, but the problem returned about a month later. The owner asks whether the cause could be electrical, a computer module, or fuel injection. The expert recommends starting with an inexpensive tune-up, including the air filter, spark plugs, oil change, and throttle or carburetor cleaning.

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