1993 BUICK SKYLARK CUSTOM 2

1993 Buick Skylark

Tiny

ronalddennisonsr

October, 25, 2012 AT 7:21 PM

1993 Buick Skylark Custom 2.3 4cy runs extreamly rich and rpm surges at midrang? Have changed ECM, fuel reulator, idle circut sensor, map, temp sensor x2 just to name a few?

FOUND 656 RELATED QUESTIONS

3 Answers

Tiny

hmac300

October, 25, 2012 AT 7:25 PM

Scan for codes and check fuel pressure first. See if fuel pressure holds after turning key off.

Tiny

ronalddennisonsr

October, 25, 2012 AT 7:43 PM

Code 26, 29. Holds fuel pressure, replaced fuel pump about 6-7 months ago. This started about 3-4 weeks ago. Seems to be geeting worse.

Tiny

hmac300

October, 26, 2012 AT 11:59 PM

Ther eis no code 29 but a 28 and both codes lead ot a poor connection at pcm or pcm itself. It's inside the pcm called a quad driver. If you get another one then make sure to change theprom in the old one to the new one. And dont' touch it with your hand unless it is grounded to something.

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