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Service engine soon lights ??

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Old Apr 3, 2018 | 06:30 PM
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Default Service Engine Soon and OBII Codes -

Hi everyone,

I recently bought this car

YEAR: 2000
MAKE: PONTIAC
MODEL: FIREBIRD FORMULA
MILES: 80,000
ENGINE: 5.7L V8 LS1

It didnt have lights on when I bought it, but it's been sitting for a year, but has been in Florida for 16 out of 18years. I Cleaned the engine and triggered the SES Soon light... The codes were read from diagnostic check and they are below:

B0753 -tranmission 1st and 2nd solinoid

P1626 - Anti-theft deterrent, possible new ignition switch

P1637 - Generator L Terminal, possible alternator connector.

The car shifts a little rough from 1st-2nd *(auto), othen then that car runs good and is in good shape. It's only got 80,000 miles and I know it needs tires, an antenna and could use a new front bumper but not right needed. Does anyone know how to fix these codes, cheapest, most effective way??.. Thanks!

Last edited by HOLDA; Apr 4, 2018 at 12:08 PM. Reason: Get better response
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Old Apr 3, 2018 | 06:37 PM
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Default Service engine soon lights ??

Hi I have a 2000 formula with 80 000 miles. It an auto with the LS1 and needs a few small things but other then that is in really good shape.

my SERVICE ENGINE SOON LIGHT came on and the codes are below

B053
P1626
P1637

I know more or less what they mean, but have not worked on a firebird in quite some time. Any help would be appreciated FirebirdNation

Year: 2000
Make: Pontiac
Model: Firebird Formula
Engine: 5.7L V8 aka LS1
Miles: 80,005
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Old Apr 4, 2018 | 06:29 AM
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Originally Posted by HOLDA
I know more or less what they mean
Please don't keep this a secret. Posting the details will make your issue much more likely to get a response. Otherwise we have to take the time to look all this up.
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Old Apr 4, 2018 | 07:32 AM
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no idea on the B053

P1626 CHEVROLET - Theft Deterrent Fuel Enable Signal Not Received
Possible causes
Faulty ignition switch
Ignition switch harness is open or shorted
ignition switch circuit poor electrical connection
Incorrect ignition key



P1637 CHEVROLET - Generator L-Terminal Circuit
Possible causes:
Faulty Generator (Alternator)
Generator harness is open or shorted
Generator circuit poor electrical connection
Powertrain Control Module (PCM) programming
Faulty Powertrain Control Module (PCM)
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Old Apr 4, 2018 | 12:10 PM
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Default Service Engine Soon and OBII Codes -

Originally Posted by wssix99
Please don't keep this a secret. Posting the details will make your issue much more likely to get a response. Otherwise we have to take the time to look all this up.
Yes I meant they read the codes to me so I know what they mean, but I have never fixed these hands-on so I am looking for more input. 1st to 2nd gear is a little rough but now bad. Other then that shifts smoothly
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Old Apr 5, 2018 | 07:20 AM
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Originally Posted by HOLDA
Yes I meant they read the codes to me so I know what they mean, but I have never fixed these hands-on so I am looking for more input. 1st to 2nd gear is a little rough but now bad. Other then that shifts smoothly
First step would be to cross reference the codes. There are web sites, like this one: https://www.obd-codes.com/trouble_codes/ where you can do that.

(That's what bleepster did for the one code above.) You can get detailed hints, causes, etc. from these sites.

As bleepster points out, the codes are 5 digits, so one of your codes is too short.
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Old Apr 5, 2018 | 10:58 AM
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When u said you cleaned the engine, does that mean that you hosed it down?
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Old Apr 5, 2018 | 12:02 PM
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Default Service Engine Soon and OBII Codes -

No I didnt hose it down. I don't think what I did had any inadvertant effect to the SES light coming on, it is good that it came on though so I can fix these asap.

The B0753 Code was for my 1st to 2nd gear solenoid transmission. That's why the light came on and why it shifts a little rough, only the first two gears. I guess I have to drop the oil pan to get to these, watch for a spring load Solenoid "A" and replace B as well.

I also got the car on a lift, their was fresh oil all over the pan, around filter and dripping into floor. He thought I had a major leak somewhere, but the car hasn't been driven much, its been sitting in my garage. Once we realized the oil filter wasn't even on, it was very loose the previous owner said he just did the oil change last 50 Mike's guessing he could but reach under to tighten properly and it came loose as car was moved. I am hoping I don't have a major oil leak cuz last thing I want is a LEMON! 80,000 Miles and no rust but does need a few here and there. Thanks everyone
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