problems running

145

Asked by 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

320

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.

3 out of 3 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 130
#2 spideybee
spideybee
Reputation 90
#2 kenet12
kenet12
Reputation 90
View All

Related Models For Sale

Used Buick Regal
107 Great Deals out of 10,818 listings starting at $3,995
Used Chevrolet Camaro
213 Great Deals out of 30,765 listings starting at $1,217
Used Ford Mustang
464 Great Deals out of 45,659 listings starting at $1,999
Used Chevrolet Monte Carlo
20 Great Deals out of 1,393 listings starting at $1,995
Used Chevrolet Corvette
118 Great Deals out of 20,545 listings starting at $3,000
Used Dodge Charger
403 Great Deals out of 28,083 listings starting at $1,988
Used Chevrolet Impala
585 Great Deals out of 31,579 listings starting at $799
Used Pontiac Firebird
10 Great Deals out of 732 listings starting at $3,875
Used Chevrolet Nova
146 listings
Used Ford F-150
2,189 Great Deals out of 206,259 listings starting at $1,499
Used Buick Skylark
97 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.