: HT4100 4.1, 4.5, 4.9



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  1. Transmission Fliud Change
  2. More for the Premium 93 vs 89 Debate
  3. Help for83 Fleetwwod
  4. Radiator cooling fan
  5. 4.5 Heads
  6. engine timing in 92 Eldorado
  7. Serious surging.
  8. experiment...MPG...ACTUAL vs. COMPUTER
  9. Service Engine Light Comming on.
  10. Improving Handling
  11. 4.9 cadillac external upgrades
  12. 4.9 deville boring sleeves
  13. So much for putting off the waterpump job
  14. '92 Seville 4.9 questions
  15. 92 ETC:Type of Power Steering Fluid?
  16. 95 Deville No Spark
  17. my cars exhaust sound from inside the car
  18. service sss
  19. lever on seat? 83 eldo
  20. '89 Deville valve cover gasket replacement
  21. car sounds like a lawnmower!!!!
  22. 1992 4.9 with code E46
  23. Where to buy Trans Pan Gasket and Trans Filter w/Gasket
  24. Computer Chip--Shift Kit--Or B&M Shift Plus??
  25. catalytic converter
  26. power steering
  27. 4100 up keep.
  28. z max
  29. transmission modulator
  30. Engine Metal Temperature Switch
  31. F85 error?
  32. Flow Charts?????????????
  33. 90 backfires
  34. Silver and Red V8 PFI engine paint chipping.
  35. 85 fleet fwd trans modulator location?
  36. 1984 , 1985 eldo convertible
  37. Error code 27
  38. 4.1 to 4.9 swap
  39. Searched codes for the first time and I need help.
  40. error E46 where to start?
  41. 1992 Eldorado 4.9l A/C Help...
  42. Error code E31 (93 Deville 4.9L)
  43. 4.9 air filter question...
  44. please help
  45. 88 4.5 Coupe Deville
  46. Rough Idle, stalls and hesitations, but...
  47. Need Help with BarsLeak and Radiator drain!
  48. '92 4.9 operating temp
  49. Engine etc.
  50. Distributor Cap
  51. Car is running rich
  52. 4.1 oil capacity
  53. no heat in cab + overheating
  54. My 88 Sedan Deville, HELP!!!
  55. Removing Alternator On 91 4.9
  56. 4.9 Battery Cables?
  57. Performance Muffler - Ideas?
  58. Should I flush tranny at 52K????
  59. Need Allante Parts - HELP
  60. 251 Belt Problems? Alternator/Fan not working.
  61. 4.1 no start
  62. 4.9:Emission Fail, High HC
  63. Cooling System Pressure Test
  64. 4.9 cam specs.
  65. Requesting 4.5 89' Info
  66. 1988 Eldo fuel tank swap
  67. AC duct rattle
  68. 4.5 running like poop
  69. New Electric "Turbo" not supercharger!
  70. coolant leak in 94 sedan deville (4.9)
  71. a few error codes
  72. She rufuses to be fixed
  73. 4.9 in a 85 fiero with caddy trans
  74. ISC motor acts sticky
  75. egr questions
  76. 88 Coupe deVille backfire
  77. Codes E01-E11, E95?
  78. Self Sticky - 4.9 Engine History and Changes
  79. smog pump adjustment
  80. new to forum
  81. engine missing
  82. 4.9 Idling fast and intermittent service light
  83. Interesting comparison.....
  84. Help! Caddy died and won't start
  85. popping sound when 4.9 is being raced....
  86. performance parts
  87. Injectors & Struts...
  88. 4.5L - 155hp, 180hp, 200hp variants and questions!
  89. power steering pulley
  90. 4.9 better than Northstar?
  91. ht 4100 question
  92. 1990 Deville E98
  93. transmission use
  94. Silent Performance Muffler
  95. Po85
  96. idle speed change?
  97. Cooling Fan Fault?
  98. What to do on a tune up to the 4.9?
  99. Transmission Oil Leak
  100. '90 Deville Speed Sensor.
  101. Nut down the distributor hole
  102. Trans Question 93 4.9 seville
  103. 350 SBC swap pics for DeVillish....
  104. 4.5 engine ticking noise???
  105. 4.5PFI Tune-up tips?
  106. 1990 Fleetwood to a 4.9 or N*
  107. 1985 Fleetwood FWD 4100
  108. tubes in throttle body
  109. Car shuts off after idle for 40 min
  110. ACDelco filter
  111. 1991 Fleetwood 4.9 high speed power loss
  112. Remote oil filter for 4.9 ?
  113. low oil pressure light
  114. 4.9 performance upgrades ?
  115. Premium fuel?
  116. How to find the leaky injector
  117. Cleaning the throttle body on a 4.9
  118. Spark plug removal on a 93 SDV
  119. Fuel Pump on 1990 deville
  120. 1991 Seville pics and questions
  121. Nylon or Metal timeing chain?
  122. im new here but here goes...
  123. '85 Fleetwood Brougham High Idel
  124. No fuel delivery to '87 Biaritz
  125. Better performance out of my 4.5?
  126. '89 SD 4.5 Diag. code E59, nowhere to be found.
  127. 1992 Eldorado Belt Size HELP! 4.9l
  128. Cadillac code check...
  129. $.1 motor
  130. to fix 1 or the other
  131. Caddy problems
  132. Is there a 4.9L NOS Kit?
  133. idiot lights.....
  134. i need help
  135. front pulley torque
  136. More 4.9 issues
  137. what are the best spark plugs?
  138. Engine Dyagnostic Codes
  139. information center
  140. Oil Leak 91 Eldorado 4.9
  141. idle speed adjustment
  142. Best oil filter?
  143. My errors have returned, inexplicibly. Help.
  144. DMV high emitter profile 4100 engine
  145. question on 91-up caddys with 4.9 engine
  146. Dual Output Muffler on a 91 Deville
  147. Cracked Manifold
  148. 10W40 oil is a bad weight?
  149. Dynomax Super Turbo
  150. Anyone have any luck With "Performance Modules"
  151. New To 4.9s And Have A few ?s
  152. 1990 TPS relearn procedure . . .
  153. engine backfires out of throtle body
  154. 88 eldo 4.5, changed the intake gasket yesterday!!
  155. Oil leak 4.5 engine 91 Allante
  156. Motor oil brand
  157. Coolant Leak Fixed- Now Running Rough After Warmup
  158. HELP Failed Emissions!!
  159. 87 deville stalls after a few mins of driving..
  160. I need Info soon
  161. 1986 Coupe DeVille w/ HT4100 V8
  162. 4.5 reliability + durability
  163. Porting your intake....
  164. 91 seville codes
  165. What engine and box can replace 4.1?
  166. 4.1 Autobox advice needed
  167. dealer shocks with 4.9 "information"
  168. Clearing codes on a '90 Fleetwood FWD
  169. Stalling 93 Seviile
  170. My 90's got sensor issues (and a glowing Cat Conv)
  171. 89 sedan deville major problem
  172. 4.5 is just a bigger 4.1? PLUS - BarsLeak or not?
  173. Hard to start below 0 F
  174. 82 4100 front crank oil leak
  175. 1992 Seville High Idle??
  176. Low Oil Pressure - 84 Eldo
  177. Computer Codes and Stereo Questions
  178. didn't pass emissions???
  179. Cooling Problems
  180. My '87 Deville is not running good when warm
  181. Oxygen Sensors - 1993 4.9
  182. Chips
  183. 4.5L V8 engine block leaking?
  184. Best way to use GM top end cleaner in the 4.9?
  185. 94 4.9L S-belt idlers blown - help!!
  186. 4.9L Injectors
  187. Tune up - do I have a distributor cap and rotor?
  188. 4.9 knocks under load
  189. 4.9l V8 Sfi Ohv 16v
  190. such a....BAD vibration..
  191. Can I use any coolant in my 4.9?
  192. 1995 Deville... ONLY 28K miles.... HELP
  193. NO Heat - Deville '87
  194. What can I do to make my 4.9 run like new??
  195. What kind of mpg should I be getting in my 92 4.9?
  196. Diesel engine smell on a 90 Deville
  197. HT4100 strange coolant problem
  198. Significant V4.9 engine vibration at 1300-1600 RPM
  199. Egr!!!
  200. Need 90 SDV 4.5 Idle Reset Procedure & Diag Codes
  201. Replacing HT4100 FWD
  202. Hmmmm
  203. wheres the fuel pump on my 87..?
  204. Allante Intakes
  205. Return-to-idle switch
  206. PC interface for 1994 ???
  207. low oil pressure light
  208. Low oil pressure light when breaking
  209. 92 Deville 4.9L..how many O2 sensors.
  210. 4.9 fuel injection questions
  211. Water pump change
  212. car just stalled..not starting..oil light
  213. 85 deville low idle
  214. 1991 4.9 hesitation problem
  215. oil /STOP light and "smokey" oil on 87 caddy...
  216. code E40..power steering pressure switch..anyone else with the same problem?
  217. 4.5 oil pan removal
  218. EGR Pipe Leak
  219. HELP!! Before I kill my car!
  220. HP on a 4.9L
  221. Bad gas mileage
  222. Oil pan removal 89 Coupe Deville
  223. Iac
  224. Engine swap Question, Want to dump 4100.
  225. My car runs like POOP!!
  226. 4.9 Oil Leak
  227. Recurring misfire/injector problem?
  228. isc relearn
  229. 4.9L Idle Problem
  230. Open and closed loop
  231. stalling
  232. Cadillac engine in Sand Rail
  233. oil pressure switch on 82' 4100
  234. Running Rough After Tune Up???
  235. '87 Deville with oil light on..while in idle...help please!
  236. 4.9 Headgaskets
  237. Solved What I thought was an exhaust rattle
  238. Exhaust/Tailpipe Question
  239. 4.9 Liter Performance
  240. 4.5 fwd to chevy 350
  241. no power /bad mileage
  242. missing 4100 engine, 1988
  243. I'm trying to save a Seville from the crusher
  244. Swapping 4100 for 307. Any advice?
  245. Deville runs rough under 11 gallons of gas
  246. Engine shutter on expressway
  247. 1989 caddy surging
  248. 1988 Seville (oil-le3aks)
  249. 86 Deville,swap 4.1 for 4.9.....
  250. performance exhaust for 4.9