• Need Some Help
• What's this coming or going out of my cat. converter?
• Draining ALL the coolant!!
• i had it out with the cooling system today
• 1986 Coupe DeVille w/ HT4100 V8
• car running rich messing up oxygen sensor!
• Engine has a hard time running
• 4100 tuneing
• 95 4.9L #7 Cylinder dead, Injector?
• temperature erratic
• Coolant change.Time or mileage dependant?
• Head Gaskets or Complete Valve Job
• Anti-Freeze Coming out of Heater?(fogging up windows)
• WTF is going on!!!(engine runnin crazy!)
• i changed everything almost ugghh
• stuck valve?
• 4100 head bolts
• I Need a bolt can you help me?
• update on my '82
• '93 DeVille Gas Mileage Questions
• won't start when hot
• im so cold
• ht4100 loosing power and e codes
• 4.1 Low compression
• popping from carb..
• OBD code
• 1984 Having Coooold Start Problems.
• Now this is really weird to me!
• 84' seville timing
• A few questions for the Caddy Experts 4.9L
• 4100 Heads For Sale
• 4.9 no longer starts
• HT4100, no power uphill
• How many mile u got out of your 4.1 engine
• 4.1 running rich
• Fuel lines
• backfiring in park
• 93 eldorado vs. 92 coupe deville
• Just installed new M.A.P. sensor now car doesn't even start!
• 4.9l Engine Knocks when Started
• Question for Kcnewell
• throttle body cleaning????
• Air Mix Door problem code F40
• 4.5 Pinging
• another sickening creation of mine!
• Coolant supplement
• ROUGH idle , strange code .
• Resurection of a '94 4.9--Advice please!
• my '85 FWB died on the interstate...fuel pump?
• Crazy overheating problem
• Oil pan removal 89 Coupe Deville
• 4.5 oil pan-bolts gone pan stays on
• advice
• 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
• Weird Problem
• 4.9 low oil pressure warning after head gaskets
• 84 Eldorado engine overheating problem
• Need to find honest and expert mechanic in Saint Louis Help
• Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
• plug wire confusion
• Possible northstar upgrade?
• 91 Deville 4.9 with no power- Need Help
• 94' sedan deville woes Heeellllllp.
• Rattling Rattling Rattling !!
• 4.5 no heat
• smog problems with 84 el dorado timing marks
• 90-92 350 TBI into 80's Fleetwood Brougham ?
• please help 4100 problem
• car cut off and didn't start until the next day
• 4.1 Runnin a Little Hot at Idle
• I hope it's not too late!
• 4.1 Cad. Fleetwood Brougham [Tranny Question]
• engine swap
• Turbocharge the 4.9L?
• Help With 4100
• Rare Cadillac Options? NM8
• Help Please Va (engine Problem)
• Quick Question
• ATF Generic or Name brand???
• Car Stall when u hit brake at the stop light sometime
• How to make a wooden Engine Support Fixture J-28467
• '92 4.9 torque converter problem
• Quick question: Cradle to cradle / Rear engine/trans mount bolts
• Oil Leaking
• fuel filter location
• Help
• 4.5 Fuel Filter replacement
• Swap 4.1 out 368 in. Can it be done?
• main bearing seel
• 4.9 off idle knocking?
• 91 4.9 hesitation EGR?
• 4.9 Idle Learn - Is this honestly it?
• 4.5 bad gas mileage and lack of power
• Needed help on 4.1 engine system
• 4.9L Roller Rockers?
• hard time starting car
• power to fuel injector
• My car runs the same with or without the egr hooked up
• So what do you like about your 4.9?
• Flush at 20k ?Break in proceedure?
• 4.9 rpm bounce & bad mpg
• fuel regulator
• 4.1 to 307 swap question
• Superchip VS Timing advance
• Highway millage.... bad....
• Inner wheel tire is spliting
• Got new codes today.
• 88 Eldorado - rough idle, intermittent miss
• mph limiter
• Tranny Blew out
• BBob and anyone else, whats the say on synthetic?
• 91 Deville 4.9 rough idle
• Fuel Injector Impedance - High/Low
• Transmission wiring diag.
• problems removing oil pan - Please Help!
• tranny warmup?
• Car not starting, please help
• 4.9 EGR system....
• Th 350
• Changing oil pan gasket
• Exhaust question once again
• water pump, water pump, water pump,
• Strange engine/ecu problem
• Engine running rough
• HEI In-cap Coil - What our the differences?
• 1990 4.5L Eldroado Engine running rough
• These 4.9s have some power!
• 4.1 chrome?!
• 5W-30 Vs 10W30 for the cold winter?
• 4.1 Coolant Leak from block-PLEASE HELP!
• 4.9 pinging not under a load
• Barometric Pressure Sensor location
• 4.9 valve cover gasket
• 94 Deville Boils Over after Engine Off
• 1990 DeVille has" the shakes" and revs on its own
• Exhaust leak in engine compartment?
• trans delays shift
• need source for 99 cadillac service manuals
• knocking solved
• Rebuilt motor for an 85
• Has anyone converted to the electrocruise?
• 87 Eldo w 35,000 mi, Change tran fluid?
• 84 coupe deville fan shroud
• C-v joint
• Mileage and Power loss, again.
• Is this the right stuff, going to attempt this weekend
• 82' couple 4100 - accelerating by itslef - HELP
• Do I have to change coolant?
• White Smoke
• Ppplllleeeeaaassseee Help!!!
• TPS setting
• Hot starting idling
• 4.9 off idle stumble
• 92 eldorado E0085 dtc help pls
• Engine Rattle
• Radiator Leak
• White smoke still coming from exhaust?
• Rebuilding my '88 THM440-T4 ie 4t60
• WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
• HELP! Would a bad EGR valve cause my car to run rough on the highway?
• supercharging the 4.9
• 4.5 Vs 4.9... Compairable?
• '86 DeVille HT4100 knock - please help :-(
• 84 4.1 Swap To 305/350 ?
• 85 Fleetwood FWD Engine Trouble
• My 86 SedanDeville is running rough above 55mph
• WTB: ASAP 4.9L Front Exhaust Manifold
• Engine noise while in park?
• egr questions
• Low Oil Pressure
• 92 Deville 4.9L..how many O2 sensors.
• Looking for a couple of VSS wires - '91 Deville
• EGR Vavle
• Pushrod?
• Please help me with my 4.1..or give me a mechanic who can
• CAM sensor
• pellets and 4.5 engine
• 92deville, idle(rough) Injector service??
• '93 4.9L Spark Plugs and Wires
• Air Pump Seized (4.1 engine)
• Intermittent Stalling
• experiment...MPG...ACTUAL vs. COMPUTER
• How to remove/replace rattling CAT
• ohm reading for injectors on 4.5
• 4.5 engine
• 4.5 EGR vs. 4.9 EGR
• 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
• new to the forum, need a little help (90 4.5l pfi)
• 90 Deville Dies while driving
• Best (Worst) Air Filters to Use
• I replaced my tps and isc but it stall every now an then
• Rough Idle
• free power??
• junked 4.1 installed chevy 5.0 runs great
• 85 cadillac seville
• New 4.9 problem, horrific idle, backfiring
• Cars starting to run a little better!
• Starter Disabled "Anti-Theft"
• TCC location, please Help!!
• Weird A/C air condition problem

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