problems running

Steven Reeves
115

Asked by Steven Feb 06, 2011 at 09:40 PM about the 1985 Buick Grand National

Question type: Maintenance & Repair

i just replaced my head gaskets on my 85 grand national and changed the plus and oil twice but when it starts up it idles rough and you have to keep giving it gas to keep running just seeing if anyone has any ideas thanks. and i have to change the water pump still cause it started to leak im guessing from when the head gasket blew thank you for any ideas

1 Answer

Joey Warren
190

Steve, Check the TPS or Throttle Position Sensor voltage and see if it is out of parameter. It should be between .45 and .47 volts. If it is not, loosen the two screws that secure it and bump the sensor up or down to get it to this voltage. Do this with the switch on. To get the voltage reading, probe the middle wire with a mulimeter. There are three on the TPS. Go to TurboBuick.com and join up, tons of people who are happy to help. My screen name is Vicious6 there.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Buick Grand National Questions

Buick Grand National Experts

#1 Joey Warren
Joey Warren
Reputation 70
#2 Racer_X
Racer_X
Reputation 50
#3 Js08016
Js08016
Reputation 40
View All

Related Models For Sale

Used Buick Regal"
278 Great Deals out of 9,986 listings starting at $500
Used Chevrolet Corvette"
391 Great Deals out of 9,814 listings starting at $3,500
Used Chevrolet Camaro"
667 Great Deals out of 28,070 listings starting at $2,399
Used Dodge Charger"
830 Great Deals out of 30,098 listings starting at $2,950
Used Buick Riviera"
126 listings starting at $3,900
Used Chevrolet Monte Carlo"
76 Great Deals out of 2,347 listings starting at $1,250
Used Ford Mustang"
1,072 Great Deals out of 23,465 listings starting at $950
Used Cadillac DeVille"
65 Great Deals out of 3,019 listings starting at $1,750
Used Buick Century"
28 Great Deals out of 1,734 listings starting at $895

Used Cars For Sale