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I am new to the site. I have a 1995 Deville that surges and will shut off while driving. When the service engine soon light comes on , it runs great. When it shuts off, it will surge and stall. Any sugestions. My Grandfather gave me the Caddy and it is in 100% excellent shape with 80,000 miles original miles.

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What are the codes when the service engine light is on?

I was about to go to AutoZone and have them checked but I tried Heitzman's suggestion. I think this was the solution. Thanks for replying Ranger.

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Also check the fuel pressure and clean the TB. While you are at it, rod out the EGR tubes down in the TB if they are carboned closed.

Thanks for the reply Heitzman. I took carb cleaner and a toothbrush and cleaned the TB. It is much better. I will tackle the tubes today and see if it gets it 100%.

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You can get the codes out of the D.I.C. as well.

Jeff.

I found the process by looking around the site. So, this is what I've got.

po12 history

po41 history current

po51 history

no ipc codes

no acp codes

no sir codes

no tcs codes

pcm?

and it stops there holding the pcm? until i shut the car off.

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What are the codes when the service engine light is on?

I found the process by looking around the site. So, this is what I've got.

po12 history

po41 history current

po51 history

no ipc codes

no acp codes

no sir codes

no tcs codes

pcm?

and it stops there holding the pcm? until i shut the car off.

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All,

I have checked the code and removed the dist. cap and rotor buuton to get to the module. The cap and rotor are absolutely terrible. I hope when I change all three this will help. Will I need to reset the codes and if so, how?

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