1995 Buick Riviera Code P1640

Tiny
JDMOD2
  • MEMBER
  • 1995 BUICK RIVIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 21,000 MILES
Check engine light is on. Code comes up P1640 which gives me 3 possibilities. The torque converter locks up Ok, so that eliminates one. The other 2 are Boost Control solenoid and Evaperator canister Purge Valve. How do I determine which of these 2 is the problem? My local parts store does not carry either part. Are they dealer items and how expenseive are they?
Sunday, November 30th, 2008 AT 2:03 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
That code is for Quad Driver Module 1. Here is a diagnostic chart, follow it and you should be able to isolate the problem. Yes, both of those are probably dealer items, but I dont have a price listing for them


https://www.2carpros.com/forum/automotive_pictures/1639_Riviera_1.jpg

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Monday, December 1st, 2008 AT 7:52 AM

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