• 83 fleetwood 4100
• Huge Problem HELP !!!
• 1991 Fleetwood 4.9 high speed power loss
• code p091 4.9 94 deville
• 92 STS - Stalls anywhere but the highway.
• flickering Service Soon and no codes...
• Interesting 4.9 symptom, need ideas
• Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
• Crank pulley wont spin...
• Injector Trouble 4.9
• She runs!
• 84 Seville - low speed hesitation
• 4.9 distributor bushing wear
• 85 Seville 4.1 Knocking?
• poor gas milage
• NOISEY cold start ups with the pulleys, only to quiet down when warm.
• 4.5 to 4.9
• 1990 Deville running poorly.
• I Lost First Gear, Car barely moves with throttle!
• 4.9 performance
• 85 Deville 4.1L Oil problems.
• Flat cam or bad lifter?
• My speedometer is WAY off, and has problems in park
• would an oil stabilizer help with burning
• 1987 Cadillac Deville No Fuel Preasure Im lost
• gas issue
• '88 DeVille EXTREME ISC problems
• Removing EGR valve - 4100
• 93 Eldawg Stalls while driving but drives great
• EGR System Question
• Bosch 19# Injectors
• 83 Deville Performance?
• ECM questions
• Blower motor not operating
• Water Pump Removal
• OBD1 Codes
• HT4100 Brand New
• Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
• 91 Deville 4.9l No Start Issue
• 6.0L? say what?
• Any good 4.x mechanics in the Detroit area?
• Weird 4.9l issues
• '91 4.9 swap into a rear drive application?
• 1985 4.1L Distibutor Drive Gear for oil pump
• SERVICE SOON telltale light!!
• Possible Transmission Problem when shifting from park
• 4.9 groaning
• 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
• ISC RPM Out Of Range
• replacing camshaft bearings?
• Water Pump - Snapped Bolt
• Another tip for 4.x car owners
• Premium Fuel in the 4.9?
• Won't Start After Driving
• need help concerning tune up
• newbie need help
• Engine Noise
• my 4100--what would you do
• should I replace the catalytic converter
• how many mods do you all know about?
• high output alternator
• Torque converter lock up solenoid, Where?
• 1990 deville shifting problem
• TBI injectors
• Code E15???????
• 4.1 Engine: Sensor Above #8 Spark Plug?
• e44 o2 error
• Cadillac 4.5L PFI and 4.9L PFI IAT?
• '92 Deville 4.9 runs great at startup, runs like crap when hot
• Non GM parts=sick Cadillac??
• 4.9 Deville Concours driving terrible again!
• 85 Eldo HT 4100 ISC/TPS
• Engine Swap
• 4100 engine temp??
• 4.5 spark plugs
• Finally Solved 4.1 Hesitation: Coil & Plug Wires
• what is that god awful smell
• 4.1 Sputters and pops
• 91 Fleetwood injector impedence?
• How do I access the internal codes and what are the normal parameters for a '92 4.9?
• Need help with 85 Eldo HT4100 Tuneup
• service vehicle soon is on my dash
• Thanks for the muffler info
• Another BIG 4.x Engine Tip--Especially for 4.1 Owners
• Coolant Temp Light = Sensor?
• 4.9 Will Not Idle Below 2500rpm!
• Tips on swapping HT4100 for 500
• 4.9 stalling problem,and allante question
• Need Tps Help
• 4.9l Starter Connection Problem
• Conflicting torque information
• Checked your A.I.R. system filter lately?
• 4.5 Cooling System Woes...
• Remanufactured HT4100 - 10K and now oil in radiator/leak
• 1990 Deville PRNDL problem
• Replacing water pump on '87 4100 - tips?
• 4100 seville engine swap help needed
• 4.1 to 4.9.... RWD?
• EGR stack tubes?????
• HT4100 Backfires
• Fuse Popping on AC Clutch
• HT4100 Running BAD when warm.
• 4.9 hesitates on highway
• Any great 4.9 mods?
• Fuel/exhaust smell seems too strong...dangerous?
• Eldorado Driveability
• What does this code mean?
• Fuel Data Center Answers
• 1985 Eldorado Engine Died! help!
• Engine miss.......AGAIN
• 93 Seville 4.9 rough idle, slow response, P041 code
• A 4.X Water Pump Story - Not for the Faint of Heart
• Intake gaskets leaking...common problem on the 4.9?
• 4.9L 1991 Seville driving me crazy - won't start
• New member planning mods to 90 STS
• Stumbling on the on ramps 4.9
• 4.9 Pinging
• Advice/Help Please -- Goodyear Gave Up
• 4.5L TBI whistling
• 4.9 Engine Oil Capacity - 92 Seville
• PCV valve location on 4.9 litre.
• How important is the PCV?
• HT4100 Driveability Question/Problem
• 94 4.9 bypass siezed A/C compressor
• 4.1 v8 injector resistance
• Plug Wire Order-87 Ht4100
• intermittent miss and other weird happenings
• Ht4100 V8
• Is lifter tick normal on a 4.9?
• Normal??
• 4.9 Exhaust Note
• Coolant and Supplement Change Intervals
• Need help
• OIL cooler lines leaking
• engine oil
• dumb question, anyone know where the pcv is on a 4.9?
• Need a little help
• A/C Recharge
• No Spark
• Trans Fluid Capacity, '93 Deville, 4.9
• Coolant Questions
• Need transmission advice, please!
• Alternator issues
• HT4100 v8 frd eldorado
• Ht4100
• Not Sure What Engine I have
• Makes me nervous!
• HT4100 Hesitation Advice
• 1991 Seville
• HT 4100: Avoid at all costs????? Help!
• Anyone change a starter on a FWD 4100?
• Question about spark plugs!
• Changed PCV Valve at 98k Miles
• 1985 Eldorado thinks it a diesel?
• ac problems
• 4.9 Problems at Wide Open Throttle
• Eldorado and the 4.1 engine ... ????
• Speed Limiter
• Starter/voltage problem...
• engine swaps - 4500, 4900, 4100 engines
• Intermittent ISC? TPS? Problem still
• Service Engine Light
• tachometer [jumps] 4.9 Seville
• 4.9 shudder when at idle
• boost HP on a 4.9 in my 1992 seville
• honest mpg of 4.9 city driving survey
• 83 Coupe Deville hard code 33 problems
• Possible injector leaks?
• Out of no where, my 92 Eldo did not start today.
• I dread turning this car off!
• 4.9 instead of 4.5??
• 85 Deville 4100 Driveability
• HT4100 Engine 250V8
• Should I buy a car with a 4.1 L Engine?
• Calling all 4.5 PFI and 4.9 PFI Owners
• Tune-up questions, spark plugs
• Think i messed something up
• Help with and '89 Deville w/4.5L
• Ok ive given up on this engine.
• Mystery Grind in Transmission, Engine, Where?
• 88 cdv
• Solved What I thought was an exhaust rattle
• Need 2 things please...
• transmission bump on downshift
• tuning Questions for a 93 deville
• Oil test shows coolant contamination in 4.9!
• 4.1L Oil Cooler path through Radiator
• ISC motor 1993 Deville
• Setting Timing on '84 HT4100 4.1L
• Throttle Position Sensor Misadjusted
• A little help needed identifying a loose connector
• TPS Question
• 4.9 STILL runs rough sets codes
• Maitenance Questions, 4.9L 1993 Deville
• loud rumble now when stopping now
• Check Vehicle Light
• Can overheating a 4.9L once damage your headgaskets?
• Better intake for the 4.1L
• Car wont shift on its own but shifts manually
• Rocker Arm Support Part Problem-HELP?

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