• Looking for used v-8 intake
• Fuel Economy and Engine Power
• 1990 bcm code e-47
• 85 seville transmission
• Noise Under Hood When Turning Ignition On and Off
• Coolant Pellets? How Many?
• Engine Knock
• help my overheat um i think
• Anyone Need a HT 4100
• engine oil supplement ?
• please help
• Is this the same knock as the 4.9 knock? It is an HT4100
• 4-9 Fuel Pump Psi
• 4.9 valve cover
• surging power
• Install Separate Thermostatic Fan Control?
• Lucas oil treatment?
• 4.9 60k knock gone!!!!!!!!!!!!!!!!!
• questions on 4.9l v8
• Bbob- Open Loop Better Than Closed??
• 4.1 Eldorado Oil Pan Gasket Change; MAJOR PAIN!
• Where's the ALDL on my 88 Deville?
• 95 deville blown head gasket
• 4.9L compatable with small block???
• HT4100 "Base Timing Mode"
• '92 4.9 Stalling after transmission rebuild
• 92 seville performance help
• Cleaned egr tubes
• 86 Seville 4.1 advice re removal of water pump
• Transmission
• Question About Changing Water Pump
• 95 Deville 4.9, Low oil pressure warning
• Mixing oils...
• here is a good one
• Tranny Woes
• To ILLUMINA!!! RE Performance Parts for 4.9
• Purchased 1984 Sedan Deville
• 93 weirdo miss
• stock 4.9 intake to allante intake comparison
• Rebuilding an HT4100
• HT4100 0-60 times!
• Needle in a haystack E53
• Redline/Tachometer
• '90 Deville 4.5 idle problems
• What kind of problems do you get if you have a F32 code
• What is a BCM?
• What Is A PCM?
• A few 4.x questions
• 200R4 slipping real bad
• 4.x dyno and comparison questions
• 88 Deville...E30 & EE30 code
• 4 prong spark plugs on 4.5
• Idle Speed Control Unit
• Does Anyone have F codes for a 93 deville
• thermostat
• 4.5--->4.9? (maybe more)
• Computer/wiring on 4.1L to 4.5L swap
• Engine Misses when cold
• Left or Right Bank Fuel Imbalance
• 1988 Deville Fast idle problems 4.5L
• Help!!!My caddy flunked the emmissions test
• advanced timing
• 92 Help!!!
• Cheap HP´s?
• 93 DeVille failed IL CO and HC emissions - need help
• Code E30 ( NO DASH!!! )
• Boosting HT4100 Performance
• Ht4100 Flowmaster Sound Clip!!!!!!!
• Blown Head Gasket maybe?????
• code19
• now what ?
• Bad computer? Maybe
• intake question
• how do i use the codes
• OK the 4.9 ECU mods thread ,lets go!
• Need information on an engine rebuild
• 4.9 engine idle speed...
• Another one knockin
• E98 Isc?
• Dumb Tool Question?
• EDAHALL! How do i post sound clips of my FLOWMASTER 40 SERIES delta with the HT4100
• Startup problem
• Piston Rings
• Intake on a Deville...
• Delco vs. Others
• 4.9 knocks under load
• Will a HT4100 go into an 88 Deville?
• Engine Swap
• 90 Deville-surging, missing, after it is warmed up
• Accel Fuel Injectors
• A little oil here and a Little oil there
• How do you advance timing?
• Performance Mufflers for 4.9??
• Ticking
• Got a Reply! on HT4100 TO 4500 Conversion!
• fuel system??
• ISC RPM out of Range (P030)
• 4.5 tbi- performance stuff??
• Engine miss at highway speeds.
• '90 DeVille 4.5L "hunts" for curb idle
• Trouble with O2 Sensor
• OIL Leak??????
• Oil Light
• collectors,bbob anyone,long term storage
• Benefit of using higher mileage vehicle oil?
• Engine reliability?
• Engine Oil Additive to stop leaks?!?
• READ THIS ONE! \/\/ high idle
• Code 33 Help!!!!
• Exhaust Condensation
• Mind boggler engine noise
• bad throttle response
• 91 4.9 Excessive Fuel Consumption
• timing newbbb
• Minor tune up
• Rough Idle and Missing...
• HELP! 1990 seville shifts to 3rd and freewheels
• Engine Fire!!! Why Me???
• new to me 85 coupe Deville
• Can 4.1 be replaced with 305 fuel Injected?
• Aftermarket 4100 Parts?
• AMAZING fix for hesitation, bad milage
• injectors for '90 Deville
• Loose EGR tube
• HT4100 swap. 4.5 or 4.9?
• coolant temp light???
• 95 deville temp.
• 4.9 Fuel Filter clogging...
• ISC Unpluged , wont idle
• Issues with vacuum lines, Battery light, all in this issue of the 2dfx PMS Thread!
• '82 Eldo Engine dying out, Backfiring through throttle body--bbob please help!!!
• I really need help on this.... engine overall performs better, gas millage bad...
• '85 eldo 4.1 head leak
• 4.9 with poor gas mileage. just changed o2
• cadillac eldorado 1991 4.9
• dieseling HT4100....
• Typical Driveability Problem - 90 Deville
• intermittent problemn
• Sparkplugs
• Whats The Best Oil for the HT4100???
• Eldorado 4.1 motor problem
• Stupid question for smart people.
• 4100 dual exhaust anyone????
• Need Help
• '82 vs. '83 Eldo ECM--ARE THEY INTERCHANGEABLE?!? HELP!!!!
• car running rough now
• my baby is sick and wont get better :(
• my baby is sick again , why ??????
• Idle Relearn Debate
• Change Oil Light
• Will 4.5 exhaust manifolds fit the HT4100?
• 4.9L build-up
• ECM killing the Injectors?
• 3 questions for all you experts.
• I have 2 questions.
• HT4100 FLOWMASTER 40series delta flow sound clip
• Fuel Filter Location - 85 Deville (Front Wheel)
• compatibility part 2
• 1986 4.1 rebuiled upgrades for more reliability.
• 85 Deville 4100 - Problems Galore
• Please REad need answer ASAP
• Someone tell me what a 'transaxle range switch' is!
• Final Choice: Dynomax SuperTurbos VS. Summit Turbos
• Electrical problem. Car won't start.
• 4.5 Engine: one dead others dying
• How Many of You With Dead Injectors??
• 4.9 in rwd configuration?
• two questions pedal and ...
• Redline/shiftpoints for 4.5
• valve spring rates
• Rebuilt Ht4100 With Less Power
• Radiator woes...
• Performance Parts for 4.9
• 92 Sedan Deville
• I wanna know as many 0-60 times as possible!!
• Car runs hot during long trips
• 4.9L Drain Plug Leaking after Coolant Flush -- Help!
• 4.9 /Northstar
• Coolant shelf life?? No good after 2 years?
• compatibility???
• valve lifter?
• 4.9L engine low power
• Exhaust Options? (photos)
• 1985 deville, coolant in my oil, help
• air intake mod?
• High Mileage 4.9L Problems (desperate help needed)
• rocker arm pivot support
• Clicking sound from valve covers?
• 4.9l Deville e41 troubleshooting
• Missing Oil Pump O-ring On Ht4100
• 93 deville water pump
• 93 deville heating problem
• Oh no! trannys slipping
• 4.1vs4.9
• well
• Coolant drain locations for a 4.9 (93 SDV)
• help me bbob 4.5 lack of power
• please dont be head gasket!!
• Fuel Pressure Regulator location?
• 4.9 Misfire

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