I'am off tomorow morning to look at one of these caddys I like the devilles with the 4.9 liter engines can anyone please tell me about your experiances with the 4.9 liter V8 powered caddys? I won't know that milage untill i start her up ofcourse being it has a digital read out but will update with that tomorow and if it drives well and passes my mechanics check I'll be driving her home :). Thanks for any info guys.

Welcome to the Forums! :welcome:

Stoneage_Caddy is your man. He should be along shortly. He has a '94 and I know he loves it, in fact, we're all gettin sick of him goin on and on and on.......Oh, sorry......just kidding!

Really, he can give you the straight dope! :thumbsup:

I had a '92 Deville with a 4.9. Put 125K on it and was relatively trouble free.

the 4.9s will develop a main bearing thump, nothing really to worry about, you can run it with the problem or you can go out and buy the $80 kit and fix it yourself in about 4 hours

I've got 140k on mine. Runs fine. :thumbsup:

I have a '94 Deville with the 4.9, and it's a great car! The engine runs very smooth, gets good gas mileage, (I was getting almost 26 on a trip Saturday) and the engine has good power. I have 111K now and it runs and looks almost new!

Same here, had mine for over a year now and it still runs beautifully @ 160k. Had a '93 STS with the Northstar before and im glad i got rid of it. This car rides nicer and aside from my suspension going at around 120k and my front hub going at 150k this car has been problem free.

The 4.9 does use a little more gas than the Northstar, and the power is a bit short of the northstar as well but considering the deville probably weighs twice as much its not a big surprise.

Welcome to the Forums! :welcome:

Stoneage_Caddy is your man. He should be along shortly. He has a '94 and I know he loves it, in fact, we're all gettin sick of him goin on and on and on.......Oh, sorry......just kidding!

Really, he can give you the straight dope! :thumbsup:

Lets sing along!

This is the song that never ends.
It goes on and on my friends.
Someone started singing it not knowing what it was,
and they'll continue singing it forever just because,

(start at top again)

I'am off tomorow morning to look at one of these caddys I like the devilles with the 4.9 liter engines can anyone please tell me about your experiances with the 4.9 liter V8 powered caddys? I won't know that milage untill i start her up ofcourse being it has a digital read out but will update with that tomorow and if it drives well and passes my mechanics check I'll be driving her home :). Thanks for any info guys.
Visit this site, you may find it useful: http://autos.msn.com/research/vip/Reliability.aspx?modelid=333&src=vip

Lets sing along!

This is the song that never ends.
It goes on and on my friends.
Someone started singing it not knowing what it was,
and they'll continue singing it forever just because,

(start at top again)
YOU BASTARD!!!!
man that song is going to be stuck in my head for days now ....damit

hang on grubbing up info for you megatron (wasnt that a nintendo game?)

click this link and read it , itll tell you what you need to know , i try to keep it updated :
http://www.cadillacforums.com/forums/showthread.php?t=29353

i cant stress enough 3 things :
First , do the "off" and "warmer" and write down everything you see and come back here and tell us...
Second drive the car , tell us if you get anything you think isnt right ,let us know the miles on it too
Third these cars leak , so you may want to check for leaks if that sort of thing bugs you , the leaks are fixable and susuly arent serious but if you dont like spots on your driveway keep a sharp eye out for leakage ...

If you do buy be sure to let us know , i have a laundry list of preventive matenance for you to do in order to make this a good investment ...

for exaple i bought mine for 4900 bucks , i spent 600 in the first 6 months getting it up to near 100% ....ive had the somewhat typical tranny problem and ac comprssor problem at 130k so im up to 3 grand total spent , but i buy name brand parts or dealer parts so i spend more than most on it

Well I looked at and test drove the 94' deville today and took it to my mechanic it seems to be a very clean car and rode drove beautifuly,it has the 4.9 liter V8 motor. I perfromed the diognostics check and no trouble codes were returned,besides that my mechanic looked her over and test drove her the only thing it needs is a water pump everything else under the hood the belts,hoses,wires and plugs are all new. The radiator is new also and the transmission has been rebuilt by the what my mechanic said. Everything in the car includeing the A/C works fine. The car has an even 100,000 miles and the car has no rust anywhere on it. I think I'am gonna go back tomorow and get her as I've look at quite a few devilles and this one is by far the nicest with the lowest miles on it. I'll post pics tomorow when I get her home. the other devilles I looked at were hurting and has alot more miles on them any mroe input you guys can give me would great thanks.

the 4.9s will develop a main bearing thump, nothing really to worry about, you can run it with the problem or you can go out and buy the $80 kit and fix it yourself in about 4 hours

I just got a'92 Deville over the weekend from a friend who bought it in a wholesale lot and I think that it may have this "thump". It definitely makes a noise and we both agree that it is too dull and not metallic enough to be what would be described as a "knock".

How does one diganose if it is this thump and what all is involved in the repair?

Also, the "OIL" light flickers at stop lights. It was worse before I changed the oil. Could this be a sending unit or perhaps the pump is starting to fail?

Thanks for any input on these issues.

Well I looked at and test drove the 94' deville today and took it to my mechanic it seems to be a very clean car and rode drove beautifuly,it has the 4.9 liter V8 motor. I perfromed the diognostics check and no trouble codes were returned,besides that my mechanic looked her over and test drove her the only thing it needs is a water pump everything else under the hood the belts,hoses,wires and plugs are all new. The radiator is new also and the transmission has been rebuilt by the what my mechanic said. Everything in the car includeing the A/C works fine. The car has an even 100,000 miles and the car has no rust anywhere on it. I think I'am gonna go back tomorow and get her as I've look at quite a few devilles and this one is by far the nicest with the lowest miles on it. I'll post pics tomorow when I get her home. the other devilles I looked at were hurting and has alot more miles on them any mroe input you guys can give me would great thanks.

Well I looked at and test drove the 94' deville today and took it to my mechanic it seems to be a very clean car and rode drove beautifuly,it has the 4.9 liter V8 motor. I perfromed the diognostics check and no trouble codes were returned,besides that my mechanic looked her over and test drove her the only thing it needs is a water pump everything else under the hood the belts,hoses,wires and plugs are all new. The radiator is new also and the transmission has been rebuilt by the what my mechanic said. Everything in the car includeing the A/C works fine. The car has an even 100,000 miles and the car has no rust anywhere on it. I think I'am gonna go back tomorow and get her as I've look at quite a few devilles and this one is by far the nicest with the lowest miles on it. I'll post pics tomorow when I get her home. the other devilles I looked at were hurting and has alot more miles on them any mroe input you guys can give me would great thanks.
WOW sounds like you found a good one ....waterpump is perfectly normal to blow out ....remeber as they cross the 100k to 130k barrier they will go thru a few parts , also normal once they get across 130k theyll go another 100k most of the time ...

these are good cars , let us know what you get .....when your mechaic changes the waterpump have him replace the coolant with the antifreeze and distalled water and DOT NOT FORGET 6 Gm coolant suppliment pellets , this is your most import item , these coolnt pellets are nessesary to prevent headgasket failure , they came from hammatrack with these pelltes and they should get these pellets and new coolant every year ...

Improper cooling system maintenace is the number one killer of 4.9 litre cars ...well that and bad drivers ...

Stoneage,
The coolant tabs DO NOT prevent head gasket failure. They simply prevent niusence leaks from imperfect mating surfaces or pourus castings. Don't want you to get a false sense of security.

Stoneage,
The coolant tabs DO NOT prevent head gasket failure. They simply prevent niusence leaks from imperfect mating surfaces or pourus castings. Don't want you to get a false sense of security.
i know thats the story for northstar but is it also for 4.9s since the heads are cast iron and blocks are aluminum ?

I believe so.

Thanks all stoneage caddy I take it these things being replaced already is a good thing then? Also where do I get these collant pellets can my mechanic order them when he orders the new water pump? Where do the coolant pellets go and do i use the orange dexacool stuff or the green thats in it already?

Use what came from the factory (green in your case). Tabs go in the radiator hose. You want HDC or G12BP from the following link. Available at any GM dealer, auto parts store, Walmart.
http://www.barsproducts.com/origin.html

Ranger , nothing personal dude ....I have been labeled a few times as obsessive compulsive by people with the authority on those conditions...I read up on what Bbobynski said . And i think we boath are wrong here , id like this mega dudes car to be in good shape so ...


Anyway regarding coolant , stright from the engineers mouth er uh fingers:
The cooling system on that car does require constant maintenance due to the fact that it has an aluminum engine block. The coolant is the conventional green, silicated coolant and needed to be replaced every 2-3 years/24-32,000 miles to keep the corrosion inhibitors in the coolant up to full strength to prevent internal engine damage due to corrosion.

I would suggest doing several things. Go to a tool rental or auto parts store and rent a cooling system pressure checker. It is a small hand pump that hooks to the radiator cap fitting. Pump up the system to its normal operating pressure of 15 PSI when the engine is cold. This way any leak that is happeneing when the engine is hot and the system is pressurized will be evident even with it cold. Pump it up and look for leaks.

Double check that you have the correct radiator cap for your system... Not all rad caps are the same. Yours should have the normal spring loaded seal to the bottom of the rad fitting, a seal around the perimeter of the cap AND a little "drop valve" in the very center of the spring loaded part of the cap that allows coolant to be sucked back from the coolant recovery bottle when the system cools to keep the radiator full.

Get a coolant checker (inexpensive ones are availabe at any auto parts or discount store) and check the concentration of your coolant. It should test good for freeze protection to -40. If the coolant is weak it could cause premature boiling (the coolant guards against freezing and boiling) and false overheating symptoms and/or coolant loss.

Drain the cooling system/radiator and refill with FRESH 50/50 coolant/distilled water premixed. When refilling the system, add 6 of the GM coolant supplement pellets/2 tubes of the commonly available BarsLeaks "golden seal" powder to make sure the cooling system is sealed internally to the engine. The sealant is absolutely mandatory for your engine to guard against internal coolant leakage. It was factory installed but needs to be replenished occasionally. Even if the coolant concentration checks "good" the coolant needs to be frequently replaced.

Fill the sytem at the radiator cap fitting to the very top. Install the cap. Fill the coolant recovery bottle. Drive the car for several short trips and allow it to cool inbetween to eliminate any air and for the coolant level to stabilize. Double check when COLD that the radiator is staying completely full. If the coolant level drops in the radiator and the coolant recovery bottle stays full then the rad cap is not correct or is not operating correctly.


http://www.cadillacforums.com/forums/showthread.php?t=9917&highlight=coolant+supplement+4.9
mega ,this Bbobynski guy is the man who desgined the engine , he hangs out here alot and is like the bible round here ....

Personally I dont care for them but I wish you the best of luck with it. I dont know what you are paying but it sounds like a decent car. :thumbsup:

Stoneage caddy I forgot to ask I'll be buying the car from a dealer and the price was $5,400 ofcourse w/ the fees,taxes and tag fee I'am looking at $6,000 even out the door is this price to high,or just right considering all the new things it has? for what its worth I've seen devilles of the same year with 130,000+ miles on them and the asking price was around a $1,000-$1,600 higher. I figure if i buy a cheaper deville with higher miles I might have to replace things that this car already has done to it. So if I spend the extra $1,500 up front i figure its worth it. I did have them deduct the price of the water pump repair and the oil/coolant changes off the price as I'd prefer to have my own mechanic do the work so I think I'am doing ok so far on my first caddy purchase how about you? I'am no mechanic but i've owned enough shit boxs to know of most common things to look for in a used car i've really done my home work here and other places as well. And I think having my own mechanic look it over was a wise move also thanks so far for the feedback.

I have a '94 Deville with the 4.9, and it's a great car! The engine runs very smooth, gets good gas mileage, (I was getting almost 26 on a trip Saturday) and the engine has good power. I have 111K now and it runs and looks almost new!

26 mpg ? What's your secret ? I can't get more than 16 on my '95. I know filters and spark plugs could be changed, but 10 mpg seems a huge difference... :eek: :confused:

26 mpg ? What's your secret ? I can't get more than 16 on my '95. I know filters and spark plugs could be changed, but 10 mpg seems a huge difference... :eek: :confused:I would expect 26 mpg on highway in a '94. If it is well maitained. My '89 got 23+ mpg last week on a trip I made, if I had port fuel injection and a little more displacement I can easily see it gaining me another 3 mpg. It could happen. :yup:

PS. mine is bone stock other than a K&N filter.

26 mpg ? What's your secret ? I can't get more than 16 on my '95. I know filters and spark plugs could be changed, but 10 mpg seems a huge difference... :eek: :confused:

It's just well maintained, recent tune-up, premium fuel and new filters. I was traveling at 70 most of the way with 4 people in the car.

It's just well maintained, recent tune-up, premium fuel and new filters. I was traveling at 70 most of the way with 4 people in the car.They do love to cruise around 70-75 mph I've noticed. It's thier 'sweet spot'. ;)

Stoneage caddy I forgot to ask I'll be buying the car from a dealer and the price was $5,400 ofcourse w/ the fees,taxes and tag fee I'am looking at $6,000 even out the door is this price to high,or just right considering all the new things it has? for what its worth I've seen devilles of the same year with 130,000+ miles on them and the asking price was around a $1,000-$1,600 higher. I figure if i buy a cheaper deville with higher miles I might have to replace things that this car already has done to it. So if I spend the extra $1,500 up front i figure its worth it. I did have them deduct the price of the water pump repair and the oil/coolant changes off the price as I'd prefer to have my own mechanic do the work so I think I'am doing ok so far on my first caddy purchase how about you? I'am no mechanic but i've owned enough shit boxs to know of most common things to look for in a used car i've really done my home work here and other places as well. And I think having my own mechanic look it over was a wise move also thanks so far for the feedback.

Dude , look it up on NADA http://www.nadaguides.com/uv/selectcategory.aspx?LI=1-11-0-2112-48-254-27209&wSec=11&wPr=1&wPg=2081
Im thinking 5400 is WAY to high i paid 4900 2 years ago on mine ....and outside its mechanicals it was a creampuff ....but check it on NADA as in certan zip codes there worth a bit more than here. why NADA you ask ? Because thats what the banks use to determine your cars value ....

Eric 2203 , i got 27.5 on my trip to sebring 2 weeks ago , cruise set at 65 mph ...

Im back down to 23 now that im home and doing my ususal commute ...

Yeah, that's way too high! I bought my '94 Deville with 94k miles for $3,500. And my car has gorgeous interior and paint. Might want to haggle with them a bit, or look around some more.

Yeah, that's way too high! I bought my '94 Deville with 94k miles for $3,500. And my car has gorgeous interior and paint. Might want to haggle with them a bit, or look around some more.Wait a minute, where is megatron located? If those are greenbacks then, yes, too much. If they are Canadian then.......?

Wait a minute, where is megatron located? If those are greenbacks then, yes, too much. If they are Canadian then.......?
he uses words like "miles" and "mileage" so ill bet my lunch money on him living in the good ol USA ...home of shadey car dealers that will tack on 600 bucks more on the sticker for Tax Tag title ...

Mega , you have a long way to go on the haggleing process , if you in america you need to at least cut the tack on 600 bucks down to $150-100...if it were me i wouldnt give more than 4900 OUT THE DOOR!!! and thats VERY genrous ...

like i say depends on where you live ....these will sell for a bit more in alaska and places where they are harder to come by ....

he uses words like "miles" and "mileage" so ill bet my lunch money on him living in the good ol USA ...home of shadey car dealers that will tack on 600 bucks more on the sticker for Tax Tag title ...So, are you a big eater? :suspect:

So, are you a big eater? :suspect:

depeneds , is it steak day ? :suspense:

depeneds , is it steak day ? :suspense:Uh.... no, it's Tuesday, liver, farver beans and a nice bottle of Chianti!

Uh.... no, it's Tuesday, liver, farver beans and a nice bottle of Chianti!
Oh in that case me and Clairese will be eating light , somewhere else :hide:

Thanks for the replies... guess my engine needs tuned-up, cleaned-up... etc. :(

Oh in that case me and Clairese will be eating light , somewhere else :hide::histeric:

I'am located in the usa and I managed to get them down to $4,600 OTD with tax,title and tag and all that crap,I feel I got I got a good deal being the car is in exceptionally good shape. I have been looking for a deville for awhile now and most of the ones I found were alot higher in miles than mine and others were simply beat to shit. The thing is in the part of florida where I am these caddys for some reason seem to be plentifull only problem is most of them are in bad shape. I found a deville last month from a private party for $4,500 But when my mechanic checked it it needed alot of work under the hood,another had a transmission that slipped badly the asking price for that one was $4,600 plus besides the tranny it needed tires and brakes. The dealer originaly wanted $5,500 for it which I knew was high but given the fact mine has alot of things brand new in it and tunrs great I diddn't see anything wron with paying what i didd I figure why save upfront only to have to dump money into a car to get it right?