• The "4.9 liter turbocharger, stage 1" thread.
• Safety Safety Safety !
• OBD I codes for 4.x Engines
• Sedan Deville 4.1 to 4.5 Disaster Swap “This time I’ll get right”
• 4.9 switched to 87 oct., hard starts, re-time?
• 4.9's torque
• clamp-down dist caps
• In need of some numbers....
• 4.5 Liter - Last chance before I need to give it up.
• A/C refrig. temp. sensor question?
• Throttle body spacers on a 4.? engine
• Plug Gap on 4.9L??? (also Bosch Injector Question)
• HT4100 SES light @ low RPM, much stalling & near stalling
• 1992 4.9 injector replacement
• last problem with HT4100 (I hope)
• Head gasket maybe but hope not!
• In search of a new/rebuilt vacuum pump...
• 4.9L coolant leak
• Have to pump gas pedal to get it to start, then it runs fine??
• Cannot getg into E.6.3 ISC Motor
• Weak Battery + Hot Engine - Bad Alternator?
• The Surge - in my 4.9, not Iraq...
• Fuel Type?
• Need wiring diagrams.
• 4.1 Spark Plug Wires Problem Solved (Maybe)
• where are the major grounding straps?
• Your advice on the HT 4100 needed/appreciated
• Pain at the pump and the inspectors
• 1991 Seville 4.9L Engine Stumble (TECH PLEASE)
• 4.9 has irratic idle can you help
• high output alternator
• radiator 1983 Eldorado refurb?
• where is this supposed to connect
• replacement fuel injectors
• 91 Deville Distributor Coil wiring diagram
• I Have Codes... Can anyone interpret?
• "illumina" and other Gurus
• '86 DeVille rear main seal
• Flowmaster Exhaust for a 4.9 Deville
• New throttle position sensor?
• 93 Seville 4.9-Crank position sensor location?
• HT4100 SYSTEM PROBLEM E047 and B334
• 93 Started, now can't keep belt on
• 4.9 ticking when cold
• 93 Won't Start
• 92 Deville, accelerated on it's own. Friend kinda fixed it but now..
• engine pinging???
• New Transmission Fluid and Filter
• engine pinging off the line?
• Got new plugs/wires installed on 4.9 today.
• 4.9 engine
• 91 Caddy DeVille Sedan Belt
• Stop Engine - Oil Light on 1988 4.5L V8
• think these are the same parts?
• 82 deville tranny problems
• no chime? cant' open gas lid?
• What's so great about the 4.9 engine?
• Air cleaner cold start door
• 92 deville sound at engine starts and stops
• 4.5 Computer Tachometer
• 4.9 Vs Northstar
• Code E26 and E27
• 93 SD 4.9 Gurgling back into the overflow tank
• When you buy a remain. ecm, does it come already flashed?
• 93 deville "CHUNKing" while reved in park or nuetral.
• 94 Deville won't start
• '93 Eldorado - Relays - ELC System
• I need a new throttle body
• 1986 Eldorado stalls under stress
• 4.1 Question
• latest 4.1 repairs
• cost of tps
• egr valve
• 1984 Fleetwood 4.1
• Trouble codes?
• Oil Leak, 92, 4.9
• 4.9 timing chain replacement ?
• 4100 RWD replacement source
• 4100? worth rebuilding
• 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
• 4.1 dampener pulley bolt
• Right the wrongs in a 4.1 (4100)
• "The Cadillac 4.1 liter engine is beyond hope for this formula"
• Popular car... at the junkyard
• 4.9 liter vanity cover removal.
• Water Pump Tasks ahead
• '94 Deville 4.9l torque conv. clutch prob?
• 4.9 swap
• ht4100- stop engine-oil pressure light flickers
• HT4100 Check In
• Need help finding power steering bracket
• Got mother's 1985 Fleetwood Brougham with HT4100
• 90 eldo-possible tranny issue and engine issue
• 250 or 252?
• The Mythical 4.9 performance Chip
• Possible ECM problem
• how hard is it to drop the oil pan
• What to do on a tune up to the 4.9?
• Member 92 Seville 89 - Old Threads
• Deville 4.9 Intake Mods?
• 1992 Cadillac STS 4.9L Issues
• Mustard like substance in radiator
• Outside temp sensor location---4.9 litre.
• 4.9 liter question
• wont start cold
• egr question
• Problem of the day :)
• 2002 DTS trouble
• 4.9 isc adjustment: Thanks Ranger
• Exhaust Muffler
• Haynes or Chiltons
• 4.9l V8 Sfi Ohv 16v
• 4.5 engine swap
• Broken Upper Radiator Hose Connector
• How do you get to the back of the FDC
• 4.1 to 4.5
• Hall Effect
• 88 4.5L Running rough
• how to/ Tune up
• deck height and bore spacing
• mechanical water temp guage
• I'm going to try the 4.1->4.9 conversion
• 4100 Updated intake gasket set
• Help my 91 cadilliac deville 4.9
• 4.9 litre--flat tappet engine?
• P085 ....... Idle Throttle Angle Too High
• New to Throttle Body Injection?
• Two Problems Not Starting and Stalling
• heat issues!!!!
• '93 Eldorado, 4.9L - Partial Fire, No Start
• 4.9 water pump
• 4.9ltr Northstar performance?
• oil change
• new and need some help please!!!!!
• Crazy Coolant Temperatures
• How do you clean 4.5 throttle body?
• 4.9 stalls
• How many miles can you expect out of a 4.9 engine and transmission?
• 4.1 Running Bad Again
• Coupe Deville 4.5 Rough Running
• slight hesitation at cold low-gear
• '93 Eldorado, 4.9L - Bad Fuel Pump?
• 1994 Sedan Deville questions...
• Piston 6 hits sparkplug - Bad timing
• For those of you with coolant loss issues.
• What should I do, buy or walk? 89 Coupe Deville
• 4.5 Allante Intake on a 4.9 Eldorado
• E20 - Open Fuel Pump Circut Feedback Signal
• Need Help ASAP!!!!!!
• Lound thump when shutting off engine, then no restart
• 4.9 Oil Filter ??
• 4.9 and spark knock
• I really need help, please!
• Question when torquing headbolts 4.9L
• will my 4.9 fit?
• Synthetic oil no no in 4100
• 1986 cadillac Stalling up hills, need help ASAP
• Case of the Evil Tranny
• C bieng displayed
• New brain wracking symptom...
• Replaced Water Pump on 89 4.5 Still leaking
• My Car is Fixed!!! New Camshaft and Lifters
• Poor gas mileage/Sensors, please help a bit!
• Decking out my 4.9
• 4.1 Spun a cam bearing,
• More HT4100 Tips
• 85 Fleetwood FWD Won't Start! Help!
• A/C Compressor Belt Bypass - 89 Deville 4.5
• Is this engine rebuildable?
• Blown Head gasket
• car surges badly when stopping
• all 4100's interchangable?
• RPO Code of the 90 4.5L V8?
• Choke?
• New Member Introduction
• Life expectancy for 4.9 and 4T60E
• HT4100 "STOP ENGINE-OIL PRESS" light flickering
• Allante HT4100
• HT4100 Recommended Oil Viscosity
• VIDEO of HT4100 WOT
• Engine Miss, (electronic not mechanical)
• 4100 Book
• engine knock in my 1994 sedan deville 4.9L
• 4.9l oil leak
• Tuning for E10 gasoline
• HT4100 PCV valve, location?
• 4.9L idle issues... no power.. etc.. TPS?
• Radiator Drain Plug
• Water
• engine id
• swap 4.1 to a 4.5 or 4.9 in 85 Seville?
• 4100 Newbie needs help!
• Losing coolant when the heat is turned on.
• Can fuel injector effect the map sensor and how it function
• Water Pump on an '85 fleetwood
• 4.9L 1995 deville car ran out of gas but wont start
• 86-87 Seville, Eldorado 4.9L Swap
• Won't start when hot (intermittent)
• 4.9 firing order???
• 1994 deville

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