: HT4100 4.1, 4.5, 4.9



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  1. 4.5 Fuel Filter replacement
  2. Swap 4.1 out 368 in. Can it be done?
  3. fuel filter location
  4. 93 deville water pump
  5. main bearing seel
  6. 4.9 off idle knocking?
  7. How many mile u got out of your 4.1 engine
  8. hard time starting car
  9. Needed help on 4.1 engine system
  10. 4.9 Idle Learn - Is this honestly it?
  11. 4.5 bad gas mileage and lack of power
  12. Flush at 20k ?Break in proceedure?
  13. 4.9 rpm bounce & bad mpg
  14. 91 4.9 hesitation EGR?
  15. power to fuel injector
  16. HT4100, no power uphill
  17. fuel regulator
  18. Inner wheel tire is spliting
  19. HT4100 Damper Bolt
  20. My car runs the same with or without the egr hooked up
  21. Superchip VS Timing advance
  22. mph limiter
  23. Highway millage.... bad....
  24. 88 Eldorado - rough idle, intermittent miss
  25. 4.1vs4.9
  26. Tranny Blew out
  27. Transmission wiring diag.
  28. Car not starting, please help
  29. So what do you like about your 4.9?
  30. 4.9 EGR system....
  31. Th 350
  32. problems removing oil pan - Please Help!
  33. 4.1 to 307 swap question
  34. Exhaust question once again
  35. BBob and anyone else, whats the say on synthetic?
  36. HEI In-cap Coil - What our the differences?
  37. tranny warmup?
  38. These 4.9s have some power!
  39. water pump, water pump, water pump,
  40. 1990 DeVille has" the shakes" and revs on its own
  41. 4.9 pinging not under a load
  42. Barometric Pressure Sensor location
  43. Exhaust leak in engine compartment?
  44. 5W-30 Vs 10W30 for the cold winter?
  45. trans delays shift
  46. Rebuilt motor for an 85
  47. 87 Eldo w 35,000 mi, Change tran fluid?
  48. Fuel Injector Impedance - High/Low
  49. How to make a wooden Engine Support Fixture J-28467
  50. 4.1 Coolant Leak from block-PLEASE HELP!
  51. 84 coupe deville fan shroud
  52. Mileage and Power loss, again.
  53. 4.9 valve cover gasket
  54. C-v joint
  55. 82' couple 4100 - accelerating by itslef - HELP
  56. Do I have to change coolant?
  57. 1990 4.5L Eldroado Engine running rough
  58. 4.9 speed limiter...
  59. Is this the right stuff, going to attempt this weekend
  60. TPS setting
  61. Tune up on a 89 Deville w/ 4.5
  62. Quick Question
  63. 92 eldorado E0085 dtc help pls
  64. Engine Rattle
  65. 4.1 chrome?!
  66. WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
  67. 4.9 off idle stumble
  68. HELP! Would a bad EGR valve cause my car to run rough on the highway?
  69. White Smoke
  70. Radiator Leak
  71. 4.5 Vs 4.9... Compairable?
  72. ROUGH idle , strange code .
  73. 85 Fleetwood FWD Engine Trouble
  74. WTB: ASAP 4.9L Front Exhaust Manifold
  75. 91 Deville 4.9 rough idle
  76. My 86 SedanDeville is running rough above 55mph
  77. Has anyone converted to the electrocruise?
  78. '86 DeVille HT4100 knock - please help :-(
  79. Engine noise while in park?
  80. 4.9 with poor gas mileage. just changed o2
  81. Low Oil Pressure
  82. Changing oil pan gasket
  83. Looking for a couple of VSS wires - '91 Deville
  84. the return of E48/E49
  85. 84' seville is a mess!
  86. EGR Vavle
  87. engine swap
  88. 92deville, idle(rough) Injector service??
  89. CAM sensor
  90. supercharging the 4.9
  91. Please help me with my 4.1..or give me a mechanic who can
  92. How to remove/replace rattling CAT
  93. pellets and 4.5 engine
  94. ohm reading for injectors on 4.5
  95. ? acceptable ohm resistance for injectors
  96. Intermittent Stalling
  97. 4.5 EGR vs. 4.9 EGR
  98. 4.5 engine
  99. Pushrod?
  100. Got new codes today.
  101. 90 Deville Dies while driving
  102. 84 4.1 Swap To 305/350 ?
  103. new to the forum, need a little help (90 4.5l pfi)
  104. Air Pump Seized (4.1 engine)
  105. OBD I codes for 4.x Engines
  106. junked 4.1 installed chevy 5.0 runs great
  107. I replaced my tps and isc but it stall every now an then
  108. Engine running rough
  109. 85 cadillac seville
  110. '93 4.9L Spark Plugs and Wires
  111. TCC location, please Help!!
  112. White smoke still coming from exhaust?
  113. Starter Disabled "Anti-Theft"
  114. need source for 99 cadillac service manuals
  115. HT4100 coolant issue.
  116. 92 (4.9L) stalling
  117. Cars starting to run a little better!
  118. Oil Overfill Cause Engine Damage?
  119. 4T60E Trans Sport Mode???
  120. can't advance computer beyond PCM?
  121. Turbocharge the 4.9L?
  122. Transmission Wont Shift
  123. discontinued?
  124. Replaced Injectors.. Still no action in Cyls 3 and 4?
  125. Edelbrock engine....
  126. Rough Idle
  127. A/c
  128. Speedometer problems......
  129. 1985 Seville HELP NEEDED
  130. Weird A/C air condition problem
  131. Size of O-rings in fuel line
  132. Fuel Filter Location.
  133. 94 Deville Boils Over after Engine Off
  134. Dexcool in a 4.9L???
  135. 1992 4.9 goes to open loop at HWY speeds.
  136. Bad Engines?
  137. fuel pump location (84 4100)
  138. car wont start (84 4100)
  139. Overhauling and Modifying a 1982 HT4100
  140. 92 deville bad head gasket selling?
  141. 92 deville please help
  142. New 4.9 problem, horrific idle, backfiring
  143. Oil Cooler...
  144. 83 eldorado with new reman engine and tranny timing / ping probs
  145. 4.1 to 4.7
  146. Car giving me fits
  147. 89 Seville idles at 2200
  148. help with codes
  149. 4.5 cranks but no start
  150. 4.9L Stalling out
  151. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  152. Pistons for a 4.5L and 4.9L the same???
  153. 4.9 distributor help
  154. umm...help please!
  155. 84 coupe deville codes
  156. engine swap
  157. 1990 deville starter replacement
  158. TPS Enhancer
  159. What kind of spark plugs for the HT4100?
  160. Vehicle Data List, Can you spot the problem?
  161. changing belt
  162. 92 Deville - OIL IN COOLANT
  163. 94' sedan deville woes Heeellllllp.
  164. What are the troubleshooting steps for injectors/plugs/wires?
  165. 4.9 Engine Oil Cooler Line replacement
  166. INTERMITTANT "Missing" and rough running/idle
  167. Ppplllleeeeaaassseee Help!!!
  168. ok so maybe its the alternator
  169. engine coolant supplement
  170. Ford SVO Injectors, Can i use them?
  171. '85 Deville Engine Temp Fan Light
  172. If I disconnect the battery.....
  173. 4.9L distributor questions
  174. How to go into different parts of OBD?
  175. gas smell?
  176. 92 Deville Surging during idle!
  177. symptoms of a bad cat?
  178. ebay purchase question?
  179. Flowmaster 80 Series-I LOVE IT!
  180. Over Heating
  181. high throttle on start. Code 26
  182. Fram Air Hog-Test
  183. 4.9L Roller Rockers?
  184. '86 Fleetwood 75 FWD
  185. TPS Adjustment for 85 4.1 (RWD)
  186. where is the thing???!!!!!!????
  187. radiator removal and installation
  188. 92 deville "set timing mode"????
  189. Ahh!!!
  190. What to do to make car stop running rich?
  191. 92 deville clicking after shut off???
  192. Spark Knock, Continued....
  193. Throttle Body and Air CLeaner Housing
  194. Engine Dies...
  195. Quick PCV question
  196. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  197. bogging 4.9 in a Fiero
  198. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  199. Overheat Problem
  200. '89 DeVille, ISP motor bounces
  201. How to tell if water pump is going out?
  202. Overheating Badly
  203. MAT Sensor location...
  204. Serpentine belt for 4.9 ('91 Deville)?
  205. sputtering
  206. Radiator leak
  207. 15 Amp ERLS blowing
  208. 94 deville fuel delivery prob. HELP!
  209. wtf
  210. loud tapping noise in the left bank sounds like from top end
  211. swap engine
  212. eric
  213. replacing a broke pulley
  214. Jrb
  215. 87 eldorado 4.1L in an 84 fiero - SES light ON
  216. so many codes!
  217. 91 Deville 4.9 with no power- Need Help
  218. 0.07 volts for ground???
  219. 87 Eldorado 4.1L
  220. type of oil
  221. ISC motor idle speed
  222. how do i remove the throttle body?
  223. got my 4.1 reman in but it wont fire up
  224. High RPM on Motor Start - 4.9
  225. 4.5 V8 Water in Oil
  226. 88 4.5 V8 Water In Oil
  227. Aftermarket 4100 Parts?
  228. coolant leak from timing cover?
  229. Hammer -vs- Fussy Starter
  230. bad thermostats, hopefully?
  231. 4.1 TPS sensor
  232. Strange engine/ecu problem
  233. Best motor oil for 4.9?
  234. 4.5 Coolant Problems, Leaking Fluid - but from where?
  235. simple 4.9 questions
  236. 4.9L Firing order + Cylinder location HERE!
  237. 4.1 Rough Idle
  238. Best (Worst) Air Filters to Use
  239. 4.9L performance upgrades?
  240. 4.1 to 4.5 swap
  241. How much for New Head Gaskets?
  242. new mat and coolent sensors
  243. rough idle and sputtering
  244. 4.1 exhaust manifold
  245. 4.9 Head Gasket
  246. problem with "service engine soon"
  247. Advance timing on 4.9
  248. What MPG for 87 Eldorado, 4.1?
  249. E048 EGR fault code how to fix?
  250. 4.9 And The Gas Mileage Sucks!!!