• just died
• Where is the control valve assembly for the transmission??
• ISC Motor question
• real cold air intake(no short ram)4.9
• 82 HT4100 Hearse Fuel System Codes
• 4.9 performance exhaust
• 1990 Sedan Deville - Any Help is Appreciated
• 1989 Eldorado Biarritz MPG
• Little help with throttle issue...
• Ethanol in your Caddy....?!
• Any Ideas? 93 Deville Stalling
• Spark plugs and spark knock
• Engine Miss...driving me mad...
• GM Top Engine Cleaner
• What's wrong with the tranny?
• Does the ISC motor affect the tranny shifting/downshifting???
• Changing Thermostat on 88 Coupe Deville
• Changing Water Pump on 95 Deville
• A/C Compressor Only Works at High RPM?
• Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
• Throttle Body 1984 HT4100
• I bought another HT4100 - a hearse
• hesitation,back fire and bad Idle 4.9
• E62 Cruise control vacum solenoid error code
• They see me coming OR So they think
• Swapping 4.9 to 4.6N*
• Any Neat Tricks Replacing Lh Head Gasket???
• Coolant temp gets up around 230 some times
• They see me coming OR So they think
• 4.9 exploding mufflers
• Who's 4100 sounds like this?
• Its not the fuel pump.
• Northstar engine builders in So Cal?
• How often do you have to calibrate your TPS?
• 4100 coolant loss #3 cylinder
• will 4.5L heads bolt up to a 4.1L
• Compression ratios?
• HT4100 flooding out badly. Code 15,20,52 ?
• exhaust leak
• 4.9L What the Hell is this? ...
• Toasted fuel pump?
• Slight tick at idle, '92 Sedan deVille.
• Accursed Ignition Timing...
• What is that tube for?
• HT 4100 - Success stories
• transmission bolt up from 4.5L to 4.1L HT4100
• Finally bought some things for the car !
• How come my motor goes full throttle on startup?
• Is this converter alright?
• Is my fuel pressure low???? 93 Deville
• Professional injector cleaning?
• A question of exhaust theory...
• Oil Pan Drain Plug Spins
• Problem adding a cutout to '90 Seville exhaust system,
• 4.5 sounds real good with no cat
• I am going to make a cut out
• RWD tranny for 4.9L??
• Flawed logic or a..
• Does Anyone Have A Step By Step Guide To Adjusting The Tps?
• Coolant gushed out on highway, engine rattles
• All Show And No Go
• Newbie here with a stall problem!
• 87 Seville...Engine problems, knocking, overheating,do I shoot it?
• 92 eldorado trunk motor sensor
• Coolant issues must be contagious
• Errr... Map/Baro code. No clue what to do.
• Yet another exhaust theory question.
• 93 Deville Loss of Power getting 6-7 MPG !!!
• Can I use a regular fuel filter?
• Where is the fuel filter?
• Can a CS144 generator on a 4.9L be opened?
• How to gut a cat?
• please help!!!!!!!
• Did I go overboard?
• Fuel: Maladies, Mayhem...Mileage!
• Whats makes one of your throtte blades wires Loose on one of the throttle blades
• Now its knocking and oil light is on!!!
• 82 Hearse Hard Starting Cold - Codes
• Uh oh! I think my waterpump finally went!
• The tricky TV cable...
• Cooling Fans
• Sometimes she idles at 600-625... sometimes 900
• Oxygen sensor cured startup WOT
• 90 Seville.. obd codes beginning with R??
• Transmission rough downshifting to 1st
• Coolant Hell (and *gulp* headgasket?)
• Tranny problem on an 89 eldo!
• Help! DeVille is dying!
• Power Steering Leak...
• This poor ol' car has been so abused.
• ****!!!! Flat Cam Now!!!!!!
• If you need scans of service manual.. 1990 Cadillac
• My 4100 will not go past 50mph
• 94 problem
• WOT with a high mileage 4.9?
• help
• E53 - Distributor Signal Interrupt
• HT-4100 modified for flex-fuel?
• Inconsistent loud bang from under hood
• Fuel Pressure Inquiries
• 4100 Engine Modified for Flex-Fuel?
• Replace the alternator or don't do it?
• God No!!!!!!
• Info on fuel injectors
• SeaFoam Method
• 4.5 TBI vs 4.1 TBI
• Why are 4.x lifters noisy?
• power steering pump
• 4.9 Exhaust
• Kill Switch - 1990 Cadillac DeVille
• changing the distributer cap and rotor on a 91 deville 4.9
• rhoads lifters?
• Wikipedia contradicted what I thought I knew
• Need Help Bad!
• Quick alternator question
• Absent 1990 Strut Bar
• 83 Eldorado swapping 4100 motors
• 4.9 Headgaskets
• Striped 4.9 Head Bolts Please Help
• Questions on ISC
• Please help! #1 service main part#?? 4.9 3545718 no good according to Cadillac?
• Shorted Mat sensor signal, E37.
• Advice! My idle has gone nuts!
• Need Throttle Body Help!
• 1987 Fleetwood problems, maybe you guys know or been through it?
• Upgrades for the braking system..
• Wobbly pulley
• what causes an e55?
• 90 seville driver information center/climate control
• Plugs and wires..
• Say I buy a new 4.5 and transmission.. give me a rundown of wht it takes to put it in
• Shadetree hall of shame.. I did something STUPID
• YES!!! It RUNS!!!!!
• Questions about replacing 4.5 motor/tranny
• How bad is this on the transmission...
• I broke my motor
• Rattling...
• 4T60E transmission problem??
• 4.9 timing is hard! Idles rough, stumble on acceleration
• What is the BEST MOTOR FLUSH out there?
• Collapsed lifter!
• 4.9 is running niiiiiiiiice.....
• Fuel Injector Selection
• 92 deville 4.9 timing cover question
• 4100 Timing Advance question.
• Why Does ?
• 4.1 spark plug ????
• How much does 4.1 engine weigh??
• 4.9 bearing part number or TSB?
• No overdrive
• 1990 Cadillac Sedan DeVille
• What causes a f48 code?
• Help with cold stalling problem
• Here is a video of the 86 fleetwood.
• E046 message
• MAT sensor?
• Engine cradle bolts?
• Help with Plug Wires and a few other items on 4.9L 93 SDV
• 1985 4.1 Help
• Cam shaft test?...
• GM top end cleaner or seafoam..
• Factory 4.x alternator
• oil problem
• Need to know ?
• GM Too Expensive Cleaner...
• I Am A Retard
• Messed up my transmission
• 88 deville tech question?
• ht4100 ?????
• Back firing/stalling/knocking HT-4100
• Engine Upgrade?
• Can I put a CADILLAC 500 V8 engine in my Deville?
• Custom Exhaust Manifolds and down pipe... for the 4.9
• 4.9 or 4.6
• tranny slipping and e39 vcc
• Ford SVO Injectors, Can i use them?
• whats the diffrence?
• Fuel Injectors 94 Deville 4.9L
• FWD 86 Fleetwood For Sale.
• Misfire and absent fuel
• Does the fpr have to leak to be bad?
• Am I stuck having to use an 80 series muffler?
• Looking For More Power From My 4.1
• 83'Eldorado 2 camshafts later and it wont start
• Tranny fluid frustration
• performance ??? ht4100
• What are the pro's and con's of upgradeing your ignition system on a 4.9?
• Engine paranoia
• remove fuel rail to change fpr on 4.9
• rough idle and bad miss
• Whistling Sound
• What should I do to fix my bad gas mialage (really bad)
• 4.9 Questions...
• OBDI vs OBDII; AC compressor
• ecm data
• '85 Deville, HT4100, considerable problems running properly...seeking help
• Diagnostic code ?/EGR Valve
• Fuel Injector Ripoff...
• P/N for gaskets
• Need help on alighning PRNDL switch.

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