: HT4100 4.1, 4.5, 4.9



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  1. exhaust venting in cabin
  2. Help with timing advance....
  3. Need Help from Bangkok, Thailand
  4. Quick Timing Question
  5. Voltage out of range(E16), BBOB??
  6. 4.9 muffler for sound
  7. Transmission Fliud Change
  8. More for the Premium 93 vs 89 Debate
  9. Help for83 Fleetwwod
  10. Radiator cooling fan
  11. 4.5 Heads
  12. engine timing in 92 Eldorado
  13. Serious surging.
  14. experiment...MPG...ACTUAL vs. COMPUTER
  15. Service Engine Light Comming on.
  16. Improving Handling
  17. 4.9 cadillac external upgrades
  18. 4.9 deville boring sleeves
  19. So much for putting off the waterpump job
  20. '92 Seville 4.9 questions
  21. 92 ETC:Type of Power Steering Fluid?
  22. 95 Deville No Spark
  23. my cars exhaust sound from inside the car
  24. service sss
  25. lever on seat? 83 eldo
  26. '89 Deville valve cover gasket replacement
  27. car sounds like a lawnmower!!!!
  28. 1992 4.9 with code E46
  29. Where to buy Trans Pan Gasket and Trans Filter w/Gasket
  30. Computer Chip--Shift Kit--Or B&M Shift Plus??
  31. catalytic converter
  32. power steering
  33. 4100 up keep.
  34. z max
  35. transmission modulator
  36. Engine Metal Temperature Switch
  37. F85 error?
  38. Flow Charts?????????????
  39. 90 backfires
  40. Silver and Red V8 PFI engine paint chipping.
  41. 85 fleet fwd trans modulator location?
  42. 1984 , 1985 eldo convertible
  43. Error code 27
  44. 4.1 to 4.9 swap
  45. Searched codes for the first time and I need help.
  46. error E46 where to start?
  47. 1992 Eldorado 4.9l A/C Help...
  48. Error code E31 (93 Deville 4.9L)
  49. 4.9 air filter question...
  50. please help
  51. 88 4.5 Coupe Deville
  52. Rough Idle, stalls and hesitations, but...
  53. Need Help with BarsLeak and Radiator drain!
  54. '92 4.9 operating temp
  55. Engine etc.
  56. Distributor Cap
  57. Car is running rich
  58. 4.1 oil capacity
  59. no heat in cab + overheating
  60. My 88 Sedan Deville, HELP!!!
  61. Removing Alternator On 91 4.9
  62. 4.9 Battery Cables?
  63. Performance Muffler - Ideas?
  64. Should I flush tranny at 52K????
  65. Need Allante Parts - HELP
  66. 251 Belt Problems? Alternator/Fan not working.
  67. 4.1 no start
  68. 4.9:Emission Fail, High HC
  69. Cooling System Pressure Test
  70. 4.9 cam specs.
  71. Requesting 4.5 89' Info
  72. 1988 Eldo fuel tank swap
  73. AC duct rattle
  74. 4.5 running like poop
  75. New Electric "Turbo" not supercharger!
  76. coolant leak in 94 sedan deville (4.9)
  77. a few error codes
  78. She rufuses to be fixed
  79. 4.9 in a 85 fiero with caddy trans
  80. ISC motor acts sticky
  81. egr questions
  82. 88 Coupe deVille backfire
  83. Codes E01-E11, E95?
  84. Self Sticky - 4.9 Engine History and Changes
  85. smog pump adjustment
  86. new to forum
  87. engine missing
  88. 4.9 Idling fast and intermittent service light
  89. Interesting comparison.....
  90. Help! Caddy died and won't start
  91. popping sound when 4.9 is being raced....
  92. performance parts
  93. Injectors & Struts...
  94. 4.5L - 155hp, 180hp, 200hp variants and questions!
  95. power steering pulley
  96. 4.9 better than Northstar?
  97. ht 4100 question
  98. 1990 Deville E98
  99. transmission use
  100. Silent Performance Muffler
  101. Po85
  102. idle speed change?
  103. Cooling Fan Fault?
  104. What to do on a tune up to the 4.9?
  105. Transmission Oil Leak
  106. '90 Deville Speed Sensor.
  107. Nut down the distributor hole
  108. Trans Question 93 4.9 seville
  109. 350 SBC swap pics for DeVillish....
  110. 4.5 engine ticking noise???
  111. 4.5PFI Tune-up tips?
  112. 1990 Fleetwood to a 4.9 or N*
  113. 1985 Fleetwood FWD 4100
  114. tubes in throttle body
  115. Car shuts off after idle for 40 min
  116. ACDelco filter
  117. 1991 Fleetwood 4.9 high speed power loss
  118. Remote oil filter for 4.9 ?
  119. low oil pressure light
  120. 4.9 performance upgrades ?
  121. Premium fuel?
  122. How to find the leaky injector
  123. Cleaning the throttle body on a 4.9
  124. Spark plug removal on a 93 SDV
  125. Fuel Pump on 1990 deville
  126. 1991 Seville pics and questions
  127. Nylon or Metal timeing chain?
  128. im new here but here goes...
  129. '85 Fleetwood Brougham High Idel
  130. No fuel delivery to '87 Biaritz
  131. Better performance out of my 4.5?
  132. '89 SD 4.5 Diag. code E59, nowhere to be found.
  133. 1992 Eldorado Belt Size HELP! 4.9l
  134. Cadillac code check...
  135. $.1 motor
  136. to fix 1 or the other
  137. Caddy problems
  138. Is there a 4.9L NOS Kit?
  139. idiot lights.....
  140. i need help
  141. front pulley torque
  142. More 4.9 issues
  143. what are the best spark plugs?
  144. Engine Dyagnostic Codes
  145. information center
  146. Oil Leak 91 Eldorado 4.9
  147. idle speed adjustment
  148. Best oil filter?
  149. My errors have returned, inexplicibly. Help.
  150. DMV high emitter profile 4100 engine
  151. question on 91-up caddys with 4.9 engine
  152. Dual Output Muffler on a 91 Deville
  153. Cracked Manifold
  154. 10W40 oil is a bad weight?
  155. Dynomax Super Turbo
  156. Anyone have any luck With "Performance Modules"
  157. New To 4.9s And Have A few ?s
  158. 1990 TPS relearn procedure . . .
  159. engine backfires out of throtle body
  160. 88 eldo 4.5, changed the intake gasket yesterday!!
  161. Oil leak 4.5 engine 91 Allante
  162. Motor oil brand
  163. Coolant Leak Fixed- Now Running Rough After Warmup
  164. HELP Failed Emissions!!
  165. 87 deville stalls after a few mins of driving..
  166. I need Info soon
  167. 1986 Coupe DeVille w/ HT4100 V8
  168. 4.5 reliability + durability
  169. Porting your intake....
  170. 91 seville codes
  171. What engine and box can replace 4.1?
  172. 4.1 Autobox advice needed
  173. dealer shocks with 4.9 "information"
  174. Clearing codes on a '90 Fleetwood FWD
  175. Stalling 93 Seviile
  176. My 90's got sensor issues (and a glowing Cat Conv)
  177. 89 sedan deville major problem
  178. 4.5 is just a bigger 4.1? PLUS - BarsLeak or not?
  179. Hard to start below 0 F
  180. 82 4100 front crank oil leak
  181. 1992 Seville High Idle??
  182. Low Oil Pressure - 84 Eldo
  183. Computer Codes and Stereo Questions
  184. didn't pass emissions???
  185. Cooling Problems
  186. My '87 Deville is not running good when warm
  187. Oxygen Sensors - 1993 4.9
  188. Chips
  189. 4.5L V8 engine block leaking?
  190. Best way to use GM top end cleaner in the 4.9?
  191. 94 4.9L S-belt idlers blown - help!!
  192. 4.9L Injectors
  193. Tune up - do I have a distributor cap and rotor?
  194. 4.9 knocks under load
  195. 4.9l V8 Sfi Ohv 16v
  196. such a....BAD vibration..
  197. Can I use any coolant in my 4.9?
  198. 1995 Deville... ONLY 28K miles.... HELP
  199. NO Heat - Deville '87
  200. What can I do to make my 4.9 run like new??
  201. What kind of mpg should I be getting in my 92 4.9?
  202. Diesel engine smell on a 90 Deville
  203. HT4100 strange coolant problem
  204. Significant V4.9 engine vibration at 1300-1600 RPM
  205. Egr!!!
  206. Need 90 SDV 4.5 Idle Reset Procedure & Diag Codes
  207. Replacing HT4100 FWD
  208. Hmmmm
  209. wheres the fuel pump on my 87..?
  210. Allante Intakes
  211. Return-to-idle switch
  212. PC interface for 1994 ???
  213. low oil pressure light
  214. Low oil pressure light when breaking
  215. 92 Deville 4.9L..how many O2 sensors.
  216. 4.9 fuel injection questions
  217. Water pump change
  218. car just stalled..not starting..oil light
  219. 85 deville low idle
  220. 1991 4.9 hesitation problem
  221. oil /STOP light and "smokey" oil on 87 caddy...
  222. code E40..power steering pressure switch..anyone else with the same problem?
  223. 4.5 oil pan removal
  224. EGR Pipe Leak
  225. HELP!! Before I kill my car!
  226. HP on a 4.9L
  227. Bad gas mileage
  228. Oil pan removal 89 Coupe Deville
  229. Iac
  230. Engine swap Question, Want to dump 4100.
  231. My car runs like POOP!!
  232. 4.9 Oil Leak
  233. Recurring misfire/injector problem?
  234. isc relearn
  235. 4.9L Idle Problem
  236. Open and closed loop
  237. stalling
  238. Cadillac engine in Sand Rail
  239. oil pressure switch on 82' 4100
  240. Running Rough After Tune Up???
  241. '87 Deville with oil light on..while in idle...help please!
  242. 4.9 Headgaskets
  243. Solved What I thought was an exhaust rattle
  244. Exhaust/Tailpipe Question
  245. 4.9 Liter Performance
  246. 4.5 fwd to chevy 350
  247. no power /bad mileage
  248. missing 4100 engine, 1988
  249. I'm trying to save a Seville from the crusher
  250. Swapping 4100 for 307. Any advice?