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Cadillac DeVille

2476 messages,  Last post on Aug 28, 2008 at 8:26 PM

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#2467 of 2476 Re: 98 Deville Northstar octane additive [pagar] by bolivar Jun 04, 2008 (12:03 am)
Replying to: pagar (May 08, 2008 12:39 pm) A lot depends on how agressive you drive, or the conditions you drive. If you have an easy foot on the gas, I think you can drop to mid-grade without any problems. You could probably drop to regular, and will hear some pinging, but still have no problems.   But, it you accelerate quickly, or drive in mountainous roads, you may need to keep premium gas in to. When the motor is under heavy load is when premium is needed to eliminate pinging.   I think if you drop the grade, your milage will probably also drop.   And I agree, the 20mph should be what you can get with a mix of in-town and highway driving, and with constant highway driving, you should be able to get 25mgp or better. On premium.
#2468 of 2476 How to disable airbags - 1998 Cadillac Sedan deVille D'Elegance by efugate Jun 28, 2008 (7:03 pm)
How do you disable side impact airbags in a 1998 Cadillac Sedan deVille D'Elegance safely? We had a collison in which the driver's door was damaged and we are currently attempting to change the driver's door?
#2469 of 2476 Additives to fuel stystem by onelord Jun 30, 2008 (9:28 pm)
I have a 03 deville with 66000 miles on it. Im getting 21mpg on the highway and 19 in the city. I was wondering if I should add something to the fuel in hopes of cleaning the fuel injectors. Is this wise to do? Replies to this message: bremertong (Jun 30, 2008 11:19 pm) bolivar (Jul 02, 2008 12:10 am)
#2470 of 2476 Re: Additives to fuel stystem [onelord] by bremertong Jun 30, 2008 (11:19 pm)
Replying to: onelord (Jun 30, 2008 9:28 pm) I owned a 1998 Deville and later a 2004 Deville for three years each and always used STP fuel injector cleaner fluid with each fill up. never had any problems. The 98 got about 27 MPG highway and around 20 in town. The 2004 around 29 MPG highway and 21 city. You may have other issues and may want to try a complete fuel system cleaner (STP has one as do other additive companies). Have you checked your air filter or replaced recently. Your MPG stats sound low so you may want to investigate further if my two suggestions don't improve your MPG performance. The 98 Deville had 39,000 miles on it at time of trade and the 2004 Deville had 36,000 miles on it. Both much lower mile cars than yours but still think you should be getting better results.
#2471 of 2476 Re: Additives to fuel stystem [onelord] by bolivar Jul 02, 2008 (12:10 am)
Replying to: onelord (Jun 30, 2008 9:28 pm) Unless you have been using very cheap unbranded gasoline, I wouldn't think you have injector problems.   With that milage, i woujld be thinking about plug wires and plugs. Us only GM wires and the recommended plugs. The wires and plugs should be good up to 100,000, but expecially if you have had some mechanical work done near the wires, they could be messed up. If you live in extremely hot area, the wires might also have broked down early.
#2472 of 2476 by onelord Jul 02, 2008 (7:02 am)
I was thinking of using a good brand of injector cleaner. I dont think its the plugss the car runs smooth and has great getup. I think it just needs some injector cleaner. Thanks for the info from both of you. Any info will help all of us. Replies to this message: bremertong (Jul 02, 2008 9:52 pm)
#2473 of 2476 Re: [onelord] by bremertong Jul 02, 2008 (9:52 pm)
Replying to: onelord (Jul 02, 2008 7:02 am) Hope you ill let us know how the injector fluid works and if you would share the name of the specific brand you used. Hope it will give you the results you are hoping for. Best wishes.
#2475 of 2476 Re: Blower motor problems [millstream] by gmarshall1 Aug 28, 2008 (2:43 pm)
Replying to: millstream (Jan 25, 2007 4:26 pm) Hi, I have the same blower motor problem could you tell me if you resolved yours and how. Thanks, John Replies to this message: bolivar (Aug 28, 2008 8:26 pm)
#2476 of 2476 Re: Blower motor problems [gmarshall1] by bolivar Aug 28, 2008 (8:26 pm)
Replying to: gmarshall1 (Aug 28, 2008 2:43 pm) Hummmmm, Not want to be mean, but are you aware you responded to a message 1 year and 7 months old?

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