what is code 1630? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-13-2004, 09:38 PM   #1
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Default what is code 1630?

I know that it says battery voltage out of range, but i had my battery and alternator tested and all is well with that. It is also doing the stuck in limp mode thing that i just got it out of the shop for doing. I am going to have to put it back in on Monday but i hope that yall can give me some help before i have to take it there on Monday morning and be without a car for who knows how long?!!!!
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Old 11-14-2004, 01:26 AM   #2
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i bought new battery cables today and was going to put them on if that will help!! can someone please give me some input because i am totally freakin here because i need my car and am mad that i only got to drive it for a day. i started it up a little while ago and it ran fine but it is still throwing that code. I got a hold of the mechanic and he said to bring the car back into the shop but i want to find out if the battery cables would be a probable factor.
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Old 11-14-2004, 12:27 PM   #3
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Hello- is this thing on?? Can't someone PLEASE answer this question???? I appreciate your help.
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Old 11-14-2004, 01:17 PM   #4
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I don't have a listing of the 94/95 codes handy (slightly different than 96 and up), nor do I have my scantool to look it up (DrJay has it in WA). Someone else is going to have to pipe in here on the code specific stuff.

All I can tell you is to clean really well, both ends of each cable and the surfaces thay mount to, check the battery voltage with the car off, and check the alternator output at idle, and at idle with all the lights and accessories on.

Assuming you can get it going.
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Old 11-14-2004, 02:01 PM   #5
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I hate limp in mode....my truck used to get religously stuck in that and it would take me forever to get it out of that mode....Then I realized my ignition switch was fried....solved that problem.
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Old 11-14-2004, 02:34 PM   #6
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see, yesterday when i had that problem my key pulls out of the ignition with the key in the on position and then it would actually turn over. Now, it is not turning over with the key out(like it is supposed to do), My car did all sorts of crap yesterday and i changed the cables this morning and it seems to be alright for now, although i know it is just temporary!
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Old 11-14-2004, 02:35 PM   #7
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Sounds like a VR problem in the Alternator. I'd be curious to see a troubleshooting unit swapped in.
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Old 11-14-2004, 03:26 PM   #8
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im on my second new alternator and battery and they both tested fine at orielly'*. Yall are very helpful and i am for forever in your debt!!! or atleast until the next problem comes up!!!LOL!!!
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Old 11-14-2004, 06:18 PM   #9
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i think that i figured the problem with the P1670 is that a year ago i decided to take my ses light out because it was always on and it drove me nuts. when i broke it out, i didnt intertwine the filaments so therefore there is an open circuit there that i will need to take my dash out and replace that bulb. Don, thanks for the help and i think that that might solve more than one of my problems because i didnt know that that was controlled by the QDM 4!

JEff
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