I changed the battery in my 98 corvette and now check engine light on and traction control light and it displays reduce engine power. I hooked up negative before positive post and someone tells me that is what is wrong with it. Can anyone help me please?

 

The battery power is low. It may have sat on the shelf too long. The voltage should be around 13v. If it wont charge then it may be defective.

You changed your battery for some reason. Are you sure you don't have an alternator problem?

 

Have your battery tested, easy place to start. I had similar problems and found that I had a two week old new battery that was no good. New battery installed and all problems gone. Low voltage kicks off all kinds of funky stuff in these cars. Good luck with fixing your problem!

 

Reverse this procedure to remake the connections...

 

I have had my 98 for 5 years seldom drive battery goes down all the time. I took it to Walmart it wouldn't take charge I bought a new battery installed it, I wish I saw your video first I hooked negative up first. My Chevy mechanic told me to un hook battery and touch both battery cables together then hook battery back up the way you suggested and it still does it

 

I bought a new battery, old one wouldn't take charge. I hooked up battery wrong. I can't believe there can't be an easy fix. There was nothing wrong before. What is the wire with connectors laying under the hood on fender, it is clicking there when I am connecting negative. Thanks

 

You still need to check the battery voltage to verify it is good...check and make sure your getting the connections nice and tight... if the battery is good then clear the codes go for a drive then before you Kill the Car pull the codes again...and post them here...

 

When I bought my new jell cell battery in was drained and needed a charge. I can assure you your problem isn't caused by connecting the cables in wrong order. That is just a precautionary measure to reduce the risk of shock in some vehicles.

When your battery has low power, the PCM begins to shut down things that it deems non-essential for getting you home. That is most likely what is happening.

 

If your new battery sat on the shelf for a few months then it could probably use a charge. Lead acid battery's don't have a long shelf life like The dry cell battery's you use in your TV remote. They need to be maintained.

Stop blaming yourself for thinking you connected it wrong. There is a lot of experience on this forum.

 

I am going to put the battery on charger now and I'm not sure if cables were really tight I will go out now and make sure. You made me feel better about the battery hook up I did. I thought maybe that was it. The old battery was not good it would say low voltage. Thanks so much I will post my results, later. Thanks again everyone

 

I was going to charge by battery but it is on 13.4 volts wouldn't that be enough. I went through the codes and it say 10 pcm 5 codes and I can't clear them out. Thanks in advance

 

It is fully charged at 13.5v.

 

C5 battery charge loss chart

A fully charged battery should be 12.6v or more.

If the battery is

12.5 = 85% charged
12.4 = 65%
12.3 = 50%
12.2 = 35%
12.1 = drained

What are the codes?

 

The codes are 1220. 1280. 1281 1514. 1516

 

P1220 CHEVROLET - Throttle Position Sensor 2 Circuit
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0 P1220 Chevrolet Comments | Add Comment
Possible causes
- Faulty Throttle Position (TP) Sensor
- Throttle Position (TP) Sensor harness is open or shorted
- Throttle Position (TP) Sensor circuit poor electrical connection

Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1220 Chevrolet Description

The Throttle Position (TP) Sensor is mounted on the throttle body of the Throttle Actuator Control (TAC) assembly. The sensor is actually 2 individual throttle position sensors within 1 housing. Two separate signal circuits, a low reference circuit, and a 5-volt reference circuit are used in order to connect the TP sensor assembly and the TAC module. The TP sensor signal voltage increases as the throttle opens. The signal circuit for TP sensor is pulled up to 5-volt reference voltage.



P1280 CHEVROLET - Accelerator Pedal Position Sensor 2 Circuit
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Possible causes
- Faulty Accelerator Pedal Position (APP)
- Accelerator Pedal Position harness is open or shorted
- Accelerator Pedal Position circuit poor electrical connection
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1280 Chevrolet Description

The Accelerator Pedal Position (APP) sensors are located within the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted to the accelerator pedal bracket. There are 3 individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used in order to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.

Possible causes
- Faulty Throttle Actuator Control (TAC)
- Throttle Actuator Control (TAC) harness is open or shorted
- Throttle Actuator Control (TAC) circuit poor electrical connection
- Faulty Mass Air Flow (MAF) Sensor
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1514 Chevrolet Description

The Throttle Actuator Control (TAC) system uses vehicle electronics and components to calculate and control the position of the throttle blade. This eliminates the need for a mechanical cable attachment from the accelerator pedal to the throttle body. This system also performs the cruise control functions as well.

The TAC system components include, but are not limited to the following:

- The accelerator pedal position (APP) sensors

- The throttle body

- The powertrain control module (PCM)

Each of these components interface together to ensure accurate calculations and control of the throttle position (TP).

Throttle Body Assembly

The throttle body for the throttle actuator control (TAC) system is similar to a conventional throttle body with several exceptions. One exception being the use of a motor to control the throttle position instead of a mechanical cable. Another exception is the throttle position (TP) sensor. The TP sensor is mounted in the throttle body assembly. The TP sensor is 2 individual TP sensors within the throttle body assembly. Two separate signal, low reference, and 5-volt reference circuits are used to connect the TP sensors and the powertrain control module (PCM). TP sensor 2 signal voltage increases as the throttle opens. TP sensor 1 signal voltage decreases as the throttle opens.

P1516
Possible causes
- Faulty Throttle Actuator Control (TAC) module
- Throttle Actuator Control (TAC) module harness is open or shorted
- Throttle Actuator Control (TAC) module circuit poor electrical connection
- Check Throttle Actuator Control (TAC) module connector for water
- Binding or bent throttle plate-failed throttle body

Read more: http://www.autocodes.com/p1516_chevr...#ixzz4DTjyIJws

 

Thank you for the information, does this mean I am going to have some new parts because I let my battery ruin. I don't drive the car much I didn't drive it enough to keep the battery charged. It just has about 36,000 miles on it, I've had it over 5 years when I bought it it didn't even have 24 000 miles . So what do I need to do. Thank you.

 

I would clean your MAF and THROTTLE BODY ... drive again and before you KILL the Car pull the codes...need to know if they are H codes HC codes or C codes also...
Look for worn, loose, frayed wires at the Throttle body connections and the MAF connection...

You probably need to drive it more, at least more often don't have to put a LOT of miles on just get it out and get up to operating temps and put her back up.... IT is HARD on cars to just sit, and sit....

 

Yes, your right about hard on cars not running them, if I get this car running again I will drive it more. Now that I can't drive it I want to drive it now. The 5 codes I gave you were C. I had some HC's also. Thanks

 

Will it start and run? Crank and no start? No crank?

 

If you have a P1220 CHEVROLET - Throttle Position Sensor 2 Circuit
DTC,,,,,,,,,,,,,,, Your are going to have REDUCED POWER.


Is it a H or C suffix code????????? The sensors can just go bad with AGE..

The Harness can also have issues. Look where the engine harness BENDS AROUND the bracket at the back of the intake manifold (drivers side ) and see if its compromised/chaffed.

Inspect the TPS Connector, wires and connector. Disconnect it and reconnect it and see if the issue changes.

Bill