my 1999 buick century won't shift gears on 1999 Buick Century

I have just repaired the lower and upper intake problem and then my starter acted up, and and when i went to test drive it the transmission won't shift , it will move but it stays in 1st gear, revearse works fine.if anyone has a answer please tell me as i can't afford a new car right now

by in Potwin, KS on March 02, 2014
2 answers 7 comments
ANSWER by on March 02, 2014
Check the grounds at the rear of the engine/transaxle.
COMMENT by on March 02, 2014
thanks I,ll do that
COMMENT by on March 02, 2014
Did it shift before u fixed intake problem?
COMMENT by on March 02, 2014
yea it was fine
ANSWER by on March 02, 2014
Check engine light on? It should be!
COMMENT by on March 02, 2014
yea it's on,I put code reader on it and it showed the tps sensor
COMMENT by on March 02, 2014
That's your shift problem!! Recheck your work for a pinched wire to the tps etc...Tps signal has a mojor effect on trans shift.!!!!!
COMMENT by on March 08, 2014
thanks for the advise the tps fixed the problem
COMMENT by on March 08, 2014
Glad to help out!