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1998 Pontiac Grand Prix Changing spark plugs and wires, A/C

Tiny
ORIGINALGRIMONE
  • MEMBER
  • 1998 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 138,100 MILES
I was told my code was a misfire of cylinder 3 and the guy suggested changing the plugs and wires. I bought all the necessary parts but I have gorilla hands and it is a little hard for me to get to the rear 3. Any tips? Also, my A/C blows cold as ice after recharging it. Only on the passenger side. Drivers side is like having the heater on full blast. Can anybody give a carpenter a mechanical clue, please? It would be much obliged.
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Saturday, August 21st, 2010 AT 12:02 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
As far as the plugs, do you have a way to safely lift the front of the vehicle so you can get under it. You may have better luck replacing the plugs from under the car.

Now, the AC issue deals with what is called a blend air door. Does this vehicle have dual climate control?
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Saturday, August 21st, 2010 AT 10:20 PM
Tiny
ORIGINALGRIMONE
  • MEMBER
  • 22 POSTS
I figured the plug situation out but not the A/C. My car does have dual climate control.
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Wednesday, August 25th, 2010 AT 2:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
The blend air door determines if you get heat or AC. It is electrically operated on this vehicle and there are two of them for the dual climate control. They are located near the heater core in the HVAC system. NOTE: All other vent doors are vacuum actuated.
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Wednesday, August 25th, 2010 AT 8:54 PM
Tiny
ORIGINALGRIMONE
  • MEMBER
  • 22 POSTS
Thank you very much for your time. Would this be something I could do myself or should I have it looked at?
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Saturday, August 28th, 2010 AT 8:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
I have to be honest. They are a pain in the *& % to get to and work on. Part of the dash will need removed.
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Saturday, August 28th, 2010 AT 11:07 PM
Tiny
ORIGINALGRIMONE
  • MEMBER
  • 22 POSTS
Sounds like fun. Maybe I will have it looked at. Thank you very much!
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Sunday, August 29th, 2010 AT 10:05 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
You're welcome. Let me know how things work out for you.
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Monday, August 30th, 2010 AT 10:46 AM

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