: HT4100 4.1, 4.5, 4.9



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  1. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  2. Just installed new M.A.P. sensor now car doesn't even start!
  3. Help With 4100
  4. Help Please Va (engine Problem)
  5. ATF Generic or Name brand???
  6. 1985 deville, coolant in my oil, help
  7. help me bbobynski 4.5 lack of power
  8. '92 4.9 torque converter problem
  9. Car Stall when u hit brake at the stop light sometime
  10. Oil Leaking
  11. smog problems with 84 el dorado timing marks
  12. Help
  13. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  14. Rare Cadillac Options? NM8
  15. 4.5 Fuel Filter replacement
  16. Swap 4.1 out 368 in. Can it be done?
  17. fuel filter location
  18. 93 deville water pump
  19. main bearing seel
  20. 4.9 off idle knocking?
  21. How many mile u got out of your 4.1 engine
  22. hard time starting car
  23. Needed help on 4.1 engine system
  24. 4.9 Idle Learn - Is this honestly it?
  25. 4.5 bad gas mileage and lack of power
  26. Flush at 20k ?Break in proceedure?
  27. 4.9 rpm bounce & bad mpg
  28. 91 4.9 hesitation EGR?
  29. power to fuel injector
  30. HT4100, no power uphill
  31. fuel regulator
  32. Inner wheel tire is spliting
  33. HT4100 Damper Bolt
  34. My car runs the same with or without the egr hooked up
  35. Superchip VS Timing advance
  36. mph limiter
  37. Highway millage.... bad....
  38. 88 Eldorado - rough idle, intermittent miss
  39. 4.1vs4.9
  40. Tranny Blew out
  41. Transmission wiring diag.
  42. Car not starting, please help
  43. So what do you like about your 4.9?
  44. 4.9 EGR system....
  45. Th 350
  46. problems removing oil pan - Please Help!
  47. 4.1 to 307 swap question
  48. Exhaust question once again
  49. BBob and anyone else, whats the say on synthetic?
  50. HEI In-cap Coil - What our the differences?
  51. tranny warmup?
  52. These 4.9s have some power!
  53. water pump, water pump, water pump,
  54. 1990 DeVille has" the shakes" and revs on its own
  55. 4.9 pinging not under a load
  56. Barometric Pressure Sensor location
  57. Exhaust leak in engine compartment?
  58. 5W-30 Vs 10W30 for the cold winter?
  59. trans delays shift
  60. Rebuilt motor for an 85
  61. 87 Eldo w 35,000 mi, Change tran fluid?
  62. Fuel Injector Impedance - High/Low
  63. How to make a wooden Engine Support Fixture J-28467
  64. 4.1 Coolant Leak from block-PLEASE HELP!
  65. 84 coupe deville fan shroud
  66. Mileage and Power loss, again.
  67. 4.9 valve cover gasket
  68. C-v joint
  69. 82' couple 4100 - accelerating by itslef - HELP
  70. Do I have to change coolant?
  71. 1990 4.5L Eldroado Engine running rough
  72. 4.9 speed limiter...
  73. Is this the right stuff, going to attempt this weekend
  74. TPS setting
  75. Tune up on a 89 Deville w/ 4.5
  76. Quick Question
  77. 92 eldorado E0085 dtc help pls
  78. Engine Rattle
  79. 4.1 chrome?!
  80. WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
  81. 4.9 off idle stumble
  82. HELP! Would a bad EGR valve cause my car to run rough on the highway?
  83. White Smoke
  84. Radiator Leak
  85. 4.5 Vs 4.9... Compairable?
  86. ROUGH idle , strange code .
  87. 85 Fleetwood FWD Engine Trouble
  88. WTB: ASAP 4.9L Front Exhaust Manifold
  89. 91 Deville 4.9 rough idle
  90. My 86 SedanDeville is running rough above 55mph
  91. Has anyone converted to the electrocruise?
  92. '86 DeVille HT4100 knock - please help :-(
  93. Engine noise while in park?
  94. 4.9 with poor gas mileage. just changed o2
  95. Low Oil Pressure
  96. Changing oil pan gasket
  97. Looking for a couple of VSS wires - '91 Deville
  98. the return of E48/E49
  99. 84' seville is a mess!
  100. EGR Vavle
  101. engine swap
  102. 92deville, idle(rough) Injector service??
  103. CAM sensor
  104. supercharging the 4.9
  105. Please help me with my 4.1..or give me a mechanic who can
  106. How to remove/replace rattling CAT
  107. pellets and 4.5 engine
  108. ohm reading for injectors on 4.5
  109. ? acceptable ohm resistance for injectors
  110. Intermittent Stalling
  111. 4.5 EGR vs. 4.9 EGR
  112. 4.5 engine
  113. Pushrod?
  114. Got new codes today.
  115. 90 Deville Dies while driving
  116. 84 4.1 Swap To 305/350 ?
  117. new to the forum, need a little help (90 4.5l pfi)
  118. Air Pump Seized (4.1 engine)
  119. OBD I codes for 4.x Engines
  120. junked 4.1 installed chevy 5.0 runs great
  121. I replaced my tps and isc but it stall every now an then
  122. Engine running rough
  123. 85 cadillac seville
  124. '93 4.9L Spark Plugs and Wires
  125. TCC location, please Help!!
  126. White smoke still coming from exhaust?
  127. Starter Disabled "Anti-Theft"
  128. need source for 99 cadillac service manuals
  129. HT4100 coolant issue.
  130. 92 (4.9L) stalling
  131. Cars starting to run a little better!
  132. Oil Overfill Cause Engine Damage?
  133. 4T60E Trans Sport Mode???
  134. can't advance computer beyond PCM?
  135. Turbocharge the 4.9L?
  136. Transmission Wont Shift
  137. discontinued?
  138. Replaced Injectors.. Still no action in Cyls 3 and 4?
  139. Edelbrock engine....
  140. Rough Idle
  141. A/c
  142. Speedometer problems......
  143. 1985 Seville HELP NEEDED
  144. Weird A/C air condition problem
  145. Size of O-rings in fuel line
  146. Fuel Filter Location.
  147. 94 Deville Boils Over after Engine Off
  148. Dexcool in a 4.9L???
  149. 1992 4.9 goes to open loop at HWY speeds.
  150. Bad Engines?
  151. fuel pump location (84 4100)
  152. car wont start (84 4100)
  153. Overhauling and Modifying a 1982 HT4100
  154. 92 deville bad head gasket selling?
  155. 92 deville please help
  156. New 4.9 problem, horrific idle, backfiring
  157. Oil Cooler...
  158. 83 eldorado with new reman engine and tranny timing / ping probs
  159. 4.1 to 4.7
  160. Car giving me fits
  161. 89 Seville idles at 2200
  162. help with codes
  163. 4.5 cranks but no start
  164. 4.9L Stalling out
  165. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  166. Pistons for a 4.5L and 4.9L the same???
  167. 4.9 distributor help
  168. umm...help please!
  169. 84 coupe deville codes
  170. engine swap
  171. 1990 deville starter replacement
  172. TPS Enhancer
  173. What kind of spark plugs for the HT4100?
  174. Vehicle Data List, Can you spot the problem?
  175. changing belt
  176. 92 Deville - OIL IN COOLANT
  177. 94' sedan deville woes Heeellllllp.
  178. What are the troubleshooting steps for injectors/plugs/wires?
  179. 4.9 Engine Oil Cooler Line replacement
  180. INTERMITTANT "Missing" and rough running/idle
  181. Ppplllleeeeaaassseee Help!!!
  182. ok so maybe its the alternator
  183. engine coolant supplement
  184. Ford SVO Injectors, Can i use them?
  185. '85 Deville Engine Temp Fan Light
  186. If I disconnect the battery.....
  187. 4.9L distributor questions
  188. How to go into different parts of OBD?
  189. gas smell?
  190. 92 Deville Surging during idle!
  191. symptoms of a bad cat?
  192. ebay purchase question?
  193. Flowmaster 80 Series-I LOVE IT!
  194. Over Heating
  195. high throttle on start. Code 26
  196. Fram Air Hog-Test
  197. 4.9L Roller Rockers?
  198. '86 Fleetwood 75 FWD
  199. TPS Adjustment for 85 4.1 (RWD)
  200. where is the thing???!!!!!!????
  201. radiator removal and installation
  202. 92 deville "set timing mode"????
  203. Ahh!!!
  204. What to do to make car stop running rich?
  205. 92 deville clicking after shut off???
  206. Spark Knock, Continued....
  207. Throttle Body and Air CLeaner Housing
  208. Engine Dies...
  209. Quick PCV question
  210. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  211. bogging 4.9 in a Fiero
  212. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  213. Overheat Problem
  214. '89 DeVille, ISP motor bounces
  215. How to tell if water pump is going out?
  216. Overheating Badly
  217. MAT Sensor location...
  218. Serpentine belt for 4.9 ('91 Deville)?
  219. sputtering
  220. Radiator leak
  221. 15 Amp ERLS blowing
  222. 94 deville fuel delivery prob. HELP!
  223. wtf
  224. loud tapping noise in the left bank sounds like from top end
  225. swap engine
  226. eric
  227. replacing a broke pulley
  228. Jrb
  229. 87 eldorado 4.1L in an 84 fiero - SES light ON
  230. so many codes!
  231. 91 Deville 4.9 with no power- Need Help
  232. 0.07 volts for ground???
  233. 87 Eldorado 4.1L
  234. type of oil
  235. ISC motor idle speed
  236. how do i remove the throttle body?
  237. got my 4.1 reman in but it wont fire up
  238. High RPM on Motor Start - 4.9
  239. 4.5 V8 Water in Oil
  240. 88 4.5 V8 Water In Oil
  241. Aftermarket 4100 Parts?
  242. coolant leak from timing cover?
  243. Hammer -vs- Fussy Starter
  244. bad thermostats, hopefully?
  245. 4.1 TPS sensor
  246. Strange engine/ecu problem
  247. Best motor oil for 4.9?
  248. 4.5 Coolant Problems, Leaking Fluid - but from where?
  249. simple 4.9 questions
  250. 4.9L Firing order + Cylinder location HERE!