: HT4100 4.1, 4.5, 4.9



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