Thread: Need help after pcm install

Hello, so i installed a pcm which someone loaded the stock tune to, then loaded the dhp 3.0 tune to, then went through it a little bit.

Now after install, i try to do the security relearn-

You crack the driver side window
try to start the car, let it sit in the on position until the security light goes off
turn the key to off
wait 10 seconds
try to start again
let the key fall back to the on position again
wait for the security or the SES light to go off (about 10 minutes)
turn the key off
try to start again, if it cranks, keep cranking till it starts or else you have to start all over again


I have no security light on, and when i try to start it, it sometimes fires for 2 seconds then shuts off.

thanks.

1. Disconnect battery
2. Install new computer
3. Reconnect battery
4. Put emergency brake on to disable daytime running lights (this step is required!)
5. Make sure all doors trunk and hood are closed leave driver window down and reach in threw window
6. Try to start. If it doesn't start, leave the key in the on position for 10 min on 97-03 cars and 15 min for 04 and newer cars. The security light should turn off after this amount of time.
7. Turn off ignition for 3 seconds
8. Try and start the car. It probably won't start. Repeat step 5 two more times.
9. If this doesn't work disconnect battery for 5 seconds and then try and start the car.

If that doesnt work, try this one:

1. Disconnect battery for 10 sec.
2. Reconnect battery
3. Turn key to ON position
4. Do not try to start vehicle, just quickly click to RUN position to engage security light
5. Let vehicle sit with key ON for 35 min.
6. Attempt to crank vehicle. Once vehicle is running, the security light may still be on
7. If security light is still on, turn key to OFF position for 5 sec.
8. Turn key to ON position and security light should turn off
9. Start vehicle and enjoy new PCM

It was the latest dhp file about 6 months ago..

Thanks ill try that second one, i already tried the 1st one.

After it fails to start wait for the security light to go off. Then turn the key off for 3 sec and just go back to run do not crank. Wait for the light to go off and then try to start.

I cant get the security light to come on with that procedure, what is preventing it from starting?

thanks

If it runs for 2 sec and shuts off it defently sounds like the security system. Does the security light come on in the bulb check?

Now it does not run at all, and no the security light does not come on when you turn the key to on.

Have some one turn the key to on while you are in the trunk and see if the fuel pump is running.

Yes, i can hear it prime.

The car does not fire at all then?

Not anymore no.

If still cranks fine, just does not fire try unhooking the battery for half an hour and try to start it again.

Will do, thanks.

I cranked it 3 times, 1st time is fired for 2 secs then shut off.

2nd and 3rd time it just cranked.

Hmm, do you still have your original pcm?

Yeah, its back where it belongs.

Thanks for your help ill just get one from overkill.