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Christ · 08-29-2009, 12:52 AM

Anybody have one for a code P1640? I haven't been able to find one yet, and it's showing on the Saturn. I never checked the codes before I put the new engine in, so I dunno if it's old or not, but I reset it 2 times today, and it came back within seconds.

I'm thinking it's got something to do with the A/C circuit, though. I didn't plug that one A/C line coolant sensor back in, and for some reason, the A/C pump won't turn on, even with it plugged in. Everything else works... car idles funny, etc... but I wanna work on clearing these codes and such first, then if the other stuff doesn't clear up after a few miles on the car, when the PCM makes nice w/ the engine, then I'll try to figure out what's wrong beyond that.

Alternator is making alot of bearing noise, as well... gonna have to swap it out for the other one, and hope that one is quieter... then rebuild the noisy one.

08-29-2009, 12:52 AM	#1 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,236 Herbie - '86 Golf Diesel 90 day: 51.89 mpg (US) Thanks: 868 Thanked 294 Times in 248 Posts	OBD2 Diagnostic Flow Chart Anybody have one for a code P1640? I haven't been able to find one yet, and it's showing on the Saturn. I never checked the codes before I put the new engine in, so I dunno if it's old or not, but I reset it 2 times today, and it came back within seconds. I'm thinking it's got something to do with the A/C circuit, though. I didn't plug that one A/C line coolant sensor back in, and for some reason, the A/C pump won't turn on, even with it plugged in. Everything else works... car idles funny, etc... but I wanna work on clearing these codes and such first, then if the other stuff doesn't clear up after a few miles on the car, when the PCM makes nice w/ the engine, then I'll try to figure out what's wrong beyond that. Alternator is making alot of bearing noise, as well... gonna have to swap it out for the other one, and hope that one is quieter... then rebuild the noisy one. (Support Ecomodder.com & get rid of these annoying ads!) __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı" I'd like to think that people might open their eyes at some point... instead, I find it more and more likely that I'll just close mine. -- Author kept secret. Je ne veux pas d'une meilleure vie. Je veux être heureux avec celle que j'ai maintenant. (I do not want a better life. I want to be happy with the one I have now.)