1991 Buick Skylark starting and idleing

Tiny
TCOOK6333
  • MEMBER
  • 1991 BUICK SKYLARK
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 68,000 MILES
Car is hard to start when cold and I must give it gas to start once started it idles up and down for maybe 3 secs until settling at a unusually high idle speed. Also it shifts through the gears more slowly than usuall during acceleration and if I come to an abrupt stop and try to take off immediately it takes a sec for it to switch back into 1st gear and I have to wait before I can move again but only after an abrupt stop. The only codes are 26 and 27 has had recent tune up except for fuel filter and recently changed ecm but kept orig prom. Please help!
Wednesday, November 5th, 2008 AT 3:57 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You have a multiple problems could be a nightmare to fix this one-Your best bet is bring it in to the pros, this is the best I can do-

Check the fuel pressure ,test the coolant temperature,throttle position, and MAF/MAP sensors, and idle air control valve

DTC 26 is a quad driver problem


https://www.2carpros.com/forum/automotive_pictures/12900_qd1_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_qd2_1.jpg



DTC 27 is transaxle gear switch problem


https://www.2carpros.com/forum/automotive_pictures/12900_gs1_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_gs2_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_gs3_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_gs4_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_gs5_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_gs6_1.jpg

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Wednesday, November 5th, 2008 AT 4:56 PM

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