: HT4100 4.1, 4.5, 4.9



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  1. Voltage out of range(E16), BBOB??
  2. 4.9 muffler for sound
  3. Transmission Fliud Change
  4. More for the Premium 93 vs 89 Debate
  5. Help for83 Fleetwwod
  6. Radiator cooling fan
  7. 4.5 Heads
  8. engine timing in 92 Eldorado
  9. Serious surging.
  10. experiment...MPG...ACTUAL vs. COMPUTER
  11. Service Engine Light Comming on.
  12. Improving Handling
  13. 4.9 cadillac external upgrades
  14. 4.9 deville boring sleeves
  15. So much for putting off the waterpump job
  16. '92 Seville 4.9 questions
  17. 92 ETC:Type of Power Steering Fluid?
  18. 95 Deville No Spark
  19. my cars exhaust sound from inside the car
  20. service sss
  21. lever on seat? 83 eldo
  22. '89 Deville valve cover gasket replacement
  23. car sounds like a lawnmower!!!!
  24. 1992 4.9 with code E46
  25. Where to buy Trans Pan Gasket and Trans Filter w/Gasket
  26. Computer Chip--Shift Kit--Or B&M Shift Plus??
  27. catalytic converter
  28. power steering
  29. 4100 up keep.
  30. z max
  31. transmission modulator
  32. Engine Metal Temperature Switch
  33. F85 error?
  34. Flow Charts?????????????
  35. 90 backfires
  36. Silver and Red V8 PFI engine paint chipping.
  37. 85 fleet fwd trans modulator location?
  38. 1984 , 1985 eldo convertible
  39. Error code 27
  40. 4.1 to 4.9 swap
  41. Searched codes for the first time and I need help.
  42. error E46 where to start?
  43. 1992 Eldorado 4.9l A/C Help...
  44. Error code E31 (93 Deville 4.9L)
  45. 4.9 air filter question...
  46. please help
  47. 88 4.5 Coupe Deville
  48. Rough Idle, stalls and hesitations, but...
  49. Need Help with BarsLeak and Radiator drain!
  50. '92 4.9 operating temp
  51. Engine etc.
  52. Distributor Cap
  53. Car is running rich
  54. 4.1 oil capacity
  55. no heat in cab + overheating
  56. My 88 Sedan Deville, HELP!!!
  57. Removing Alternator On 91 4.9
  58. 4.9 Battery Cables?
  59. Performance Muffler - Ideas?
  60. Should I flush tranny at 52K????
  61. Need Allante Parts - HELP
  62. 251 Belt Problems? Alternator/Fan not working.
  63. 4.1 no start
  64. 4.9:Emission Fail, High HC
  65. Cooling System Pressure Test
  66. 4.9 cam specs.
  67. Requesting 4.5 89' Info
  68. 1988 Eldo fuel tank swap
  69. AC duct rattle
  70. 4.5 running like poop
  71. New Electric "Turbo" not supercharger!
  72. coolant leak in 94 sedan deville (4.9)
  73. a few error codes
  74. She rufuses to be fixed
  75. 4.9 in a 85 fiero with caddy trans
  76. ISC motor acts sticky
  77. egr questions
  78. 88 Coupe deVille backfire
  79. Codes E01-E11, E95?
  80. Self Sticky - 4.9 Engine History and Changes
  81. smog pump adjustment
  82. new to forum
  83. engine missing
  84. 4.9 Idling fast and intermittent service light
  85. Interesting comparison.....
  86. Help! Caddy died and won't start
  87. popping sound when 4.9 is being raced....
  88. performance parts
  89. Injectors & Struts...
  90. 4.5L - 155hp, 180hp, 200hp variants and questions!
  91. power steering pulley
  92. 4.9 better than Northstar?
  93. ht 4100 question
  94. 1990 Deville E98
  95. transmission use
  96. Silent Performance Muffler
  97. Po85
  98. idle speed change?
  99. Cooling Fan Fault?
  100. What to do on a tune up to the 4.9?
  101. Transmission Oil Leak
  102. '90 Deville Speed Sensor.
  103. Nut down the distributor hole
  104. Trans Question 93 4.9 seville
  105. 350 SBC swap pics for DeVillish....
  106. 4.5 engine ticking noise???
  107. 4.5PFI Tune-up tips?
  108. 1990 Fleetwood to a 4.9 or N*
  109. 1985 Fleetwood FWD 4100
  110. tubes in throttle body
  111. Car shuts off after idle for 40 min
  112. ACDelco filter
  113. 1991 Fleetwood 4.9 high speed power loss
  114. Remote oil filter for 4.9 ?
  115. low oil pressure light
  116. 4.9 performance upgrades ?
  117. Premium fuel?
  118. How to find the leaky injector
  119. Cleaning the throttle body on a 4.9
  120. Spark plug removal on a 93 SDV
  121. Fuel Pump on 1990 deville
  122. 1991 Seville pics and questions
  123. Nylon or Metal timeing chain?
  124. im new here but here goes...
  125. '85 Fleetwood Brougham High Idel
  126. No fuel delivery to '87 Biaritz
  127. Better performance out of my 4.5?
  128. '89 SD 4.5 Diag. code E59, nowhere to be found.
  129. 1992 Eldorado Belt Size HELP! 4.9l
  130. Cadillac code check...
  131. $.1 motor
  132. to fix 1 or the other
  133. Caddy problems
  134. Is there a 4.9L NOS Kit?
  135. idiot lights.....
  136. i need help
  137. front pulley torque
  138. More 4.9 issues
  139. what are the best spark plugs?
  140. Engine Dyagnostic Codes
  141. information center
  142. Oil Leak 91 Eldorado 4.9
  143. idle speed adjustment
  144. Best oil filter?
  145. My errors have returned, inexplicibly. Help.
  146. DMV high emitter profile 4100 engine
  147. question on 91-up caddys with 4.9 engine
  148. Dual Output Muffler on a 91 Deville
  149. Cracked Manifold
  150. 10W40 oil is a bad weight?
  151. Dynomax Super Turbo
  152. Anyone have any luck With "Performance Modules"
  153. New To 4.9s And Have A few ?s
  154. 1990 TPS relearn procedure . . .
  155. engine backfires out of throtle body
  156. 88 eldo 4.5, changed the intake gasket yesterday!!
  157. Oil leak 4.5 engine 91 Allante
  158. Motor oil brand
  159. Coolant Leak Fixed- Now Running Rough After Warmup
  160. HELP Failed Emissions!!
  161. 87 deville stalls after a few mins of driving..
  162. I need Info soon
  163. 1986 Coupe DeVille w/ HT4100 V8
  164. 4.5 reliability + durability
  165. Porting your intake....
  166. 91 seville codes
  167. What engine and box can replace 4.1?
  168. 4.1 Autobox advice needed
  169. dealer shocks with 4.9 "information"
  170. Clearing codes on a '90 Fleetwood FWD
  171. Stalling 93 Seviile
  172. My 90's got sensor issues (and a glowing Cat Conv)
  173. 89 sedan deville major problem
  174. 4.5 is just a bigger 4.1? PLUS - BarsLeak or not?
  175. Hard to start below 0 F
  176. 82 4100 front crank oil leak
  177. 1992 Seville High Idle??
  178. Low Oil Pressure - 84 Eldo
  179. Computer Codes and Stereo Questions
  180. didn't pass emissions???
  181. Cooling Problems
  182. My '87 Deville is not running good when warm
  183. Oxygen Sensors - 1993 4.9
  184. Chips
  185. 4.5L V8 engine block leaking?
  186. Best way to use GM top end cleaner in the 4.9?
  187. 94 4.9L S-belt idlers blown - help!!
  188. 4.9L Injectors
  189. Tune up - do I have a distributor cap and rotor?
  190. 4.9 knocks under load
  191. 4.9l V8 Sfi Ohv 16v
  192. such a....BAD vibration..
  193. Can I use any coolant in my 4.9?
  194. 1995 Deville... ONLY 28K miles.... HELP
  195. NO Heat - Deville '87
  196. What can I do to make my 4.9 run like new??
  197. What kind of mpg should I be getting in my 92 4.9?
  198. Diesel engine smell on a 90 Deville
  199. HT4100 strange coolant problem
  200. Significant V4.9 engine vibration at 1300-1600 RPM
  201. Egr!!!
  202. Need 90 SDV 4.5 Idle Reset Procedure & Diag Codes
  203. Replacing HT4100 FWD
  204. Hmmmm
  205. wheres the fuel pump on my 87..?
  206. Allante Intakes
  207. Return-to-idle switch
  208. PC interface for 1994 ???
  209. low oil pressure light
  210. Low oil pressure light when breaking
  211. 92 Deville 4.9L..how many O2 sensors.
  212. 4.9 fuel injection questions
  213. Water pump change
  214. car just stalled..not starting..oil light
  215. 85 deville low idle
  216. 1991 4.9 hesitation problem
  217. oil /STOP light and "smokey" oil on 87 caddy...
  218. code E40..power steering pressure switch..anyone else with the same problem?
  219. 4.5 oil pan removal
  220. EGR Pipe Leak
  221. HELP!! Before I kill my car!
  222. HP on a 4.9L
  223. Bad gas mileage
  224. Oil pan removal 89 Coupe Deville
  225. Iac
  226. Engine swap Question, Want to dump 4100.
  227. My car runs like POOP!!
  228. 4.9 Oil Leak
  229. Recurring misfire/injector problem?
  230. isc relearn
  231. 4.9L Idle Problem
  232. Open and closed loop
  233. stalling
  234. Cadillac engine in Sand Rail
  235. oil pressure switch on 82' 4100
  236. Running Rough After Tune Up???
  237. '87 Deville with oil light on..while in idle...help please!
  238. 4.9 Headgaskets
  239. Solved What I thought was an exhaust rattle
  240. Exhaust/Tailpipe Question
  241. 4.9 Liter Performance
  242. 4.5 fwd to chevy 350
  243. no power /bad mileage
  244. missing 4100 engine, 1988
  245. I'm trying to save a Seville from the crusher
  246. Swapping 4100 for 307. Any advice?
  247. Deville runs rough under 11 gallons of gas
  248. Engine shutter on expressway
  249. 1989 caddy surging
  250. 1988 Seville (oil-le3aks)