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  1. Eldorado ?

    Northstar Engines and System Technical Discussion
    How do you access the computor on the Eldorado,1998 Touring Coup. VDC:cool:
  2. 1990 4.5 Deville rough idle/miss

    HT4100 4.1, 4.5, 4.9
    I recently bought a 1990 Cadillac Sedan Deville with 80,000 miles. When I bought the car, it had a rough idle/miss. The guy I bought the car from had it tuned up with new plugs, wires, distributor cap, new filters, etc. Still it had a miss. The check engine telltale was on also. When I ran the...
  3. Service Code E30

    HT4100 4.1, 4.5, 4.9
    Hello, This is my first time posting to this forum. I have a 1987 Touring Sedan, and I think it is of the Deville model but not sure. No mechanic can seem to find "Touring Sedan" in their books. I have a 4100 engine and I have just received a service code E30 which, according to my factory...
  4. Adding factory NAV to Newer STS (NON DVD)

    Cadillac Audio, Video and Security Systems
    Well, i almost bit the bullet and bought the factory radio/screen for my sts in hopes of installing a factory nav system. But once i looked into the nitty gritty details, i found it may be WAY more trouble than its worth. THe following is the procedure for setting this up, IF you have the...
  5. 4.9 performance

    HT4100 4.1, 4.5, 4.9
    Hello everyone... Let's try and keep this thread only related to performance mods to the 4.9 I know there are differnt chips... super chips has one for $250 that says it adds 18hp and 28ft. lbs. tourqe, and fast chips has one for $160 that claims 13-15hp.... which is better? besides exhaust...
  6. What's so great about the 4.9 engine?

    HT4100 4.1, 4.5, 4.9
    Is it better than the Northstar? Why? How much power/torque does it have? I'm just curious, really... I'd like to know more about it...
  7. PO39 Trouble Code

    Cadillac Seville / Cadillac Eldorado Forum
    Hey, today i got the "Code PO39" and the service vehicle soon light. After I turned the engine off though, it hasn't come back on and it's "P039 History" now...I looked up the code and it said "TCC engagement problem", does anybody know what this means??? thanx!
  8. ABS Trouble?

    Cadillac Allante Forum
    I have a '91 Allante with rock-hard pedal and a friend gave a tip for checking the trouble codes. It came up as a "64"....any ideas what this means? any tips would be very helpful - thanks!
  9. Digital gauges

    RWD 19xx-1984 DeVille and Fleetwood,1985-1996 Flee
    hi ! i have a 1983 Deville RWD and want to install digital gauges from the 1990-1992 Brougham in the car. Does anybody know what parts exactly i need ? (except the gauge unit)
  10. throttle boddy clicking!!!! help!!!

    Northstar Engines and System Technical Discussion
    I got home from school tonight and i turned off my car. I heard a clicking noise so i opened the hood. Now the key was all the way off and i had them in my hand, but the throttle body was clicking open and closed!!! It does this too when i turn the ignition on but dont start it. I think its...
  11. DeVille vs DTS

    Northstar Engines and System Technical Discussion
    How does the DTS create 25 more horsepower than the standard 2000 DeVille?
  12. Dead Sled vs. ford escort

    Cadillac Dragstrip Stories and Track Videos
    I was on my way to drill this morning and I passed a fellow Guardsmen in his escort, he passes me, I pass him, he passes me, I pass him and leave him an 1/8 mile behind me. I get to the armory and he said he hit the governor at 105 and I blew his doors off :D
  13. 4.5 performance parts

    Cadillac Allante Forum
    I heard that the Allante 4.5s put out 200hp while the others put out 180, does that extra 20hp come from the intake manifold? Also what other things can i do to get more power out of it?