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Sluggish start when cold 700 1992

posted by  jesperl50 on  Mon Nov 7 15:19 CST 2022
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Hi BB,

I have a 1992 brick, Regina, Naturally Aspirated, VX cam and adjustable cam sprocket.

When cold, it starts fine, but if I open the throttle it bogs down, sometimes even stalls. Feels like it gets air, but not fuel. If I wait 30 seconds idling, I can drive off just fine.

Recently worked on rotor, housing, and spark plug wires less than 1 year, but shoddy quality perhaps.

Any thoughts?








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Sluggish start when cold 700 1992

posted by  B.B. on  Mon Nov 7 17:03 CST 2022
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last visit: Mon Oct 6 13:15 CST 2014
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Here's some ideas:

Replace geriatric vacuum lines and elbows.

Check for air leaks between the throttle body and AMM.

Treat your gas tank to some Techron injection cleaner.

Check for OBD codes.

Cheers, Bill








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Sluggish start when cold 700 1992

posted by  chuffsy on  Tue Nov 8 22:01 CST 2022
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last visit: Tue Oct 21 18:17 CST 2014
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I don't think the regina has an AMM. My 91 doesn't.








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Sluggish start when cold 700 1992

posted by  Chris Mullet on  Wed Nov 9 07:32 CST 2022
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last visit: Fri Oct 24 09:08 CST 2014
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“… I don't think the regina has an AMM.…”

Chuffsy, that is correct. The Regina cars have an intake air temperature sensor in the place of an AMM. That’s one bonus point for Regina.








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Sluggish start when cold 700 1992

posted by  Chris Mullet on  Mon Nov 7 18:37 CST 2022
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last visit: Fri Oct 24 09:08 CST 2014
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In addition to B.B.‘a suggestions you might also want to perform a temperature vs resistance test on the engine coolant temperature sensor. If it may out of spec and not allowing the engine to run rich enough when cold.








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Sluggish start when cold 700 1992

posted by  jesperl50 on  Tue Nov 8 10:51 CST 2022
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Thanks both! Will start looking at this.







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