: Northstar Engines and System Technical Discussion



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  1. Timing mark clarification
  2. Engine in the car repair... how many gaskets?
  3. Front hydraulic motor mount
  4. I can't get the CV joint to separate from the Trans
  5. 1993 Caddillac Eldorado - Timing Chain Issue
  6. Stud Kit Success!!
  7. Ways to increase performance?
  8. Radiator leaks and engine runs rough, no codes
  9. Ethanol Blends
  10. 98 Eldorado Starting Problems
  11. Problems removing head dowels
  12. Another visit to the track
  13. 95 vs 99 Northstar
  14. Tuning up the engine.
  15. Head Gasket Repair At Your Location!
  16. Head Gasket Paranoia
  17. catalyst converter replaced
  18. 93 STS Lots of smoke after fillup
  19. Exact oil filter wrench for 1996 Seville SLS
  20. new northstar
  21. Super Noob needs help overheating
  22. Nitrous Help: 01 DTS
  23. Head gasket removal, best practices
  24. 01 deville o2's locations?
  25. Head stud kit
  26. Documenting a swap: N* 4.6 / 97 STS
  27. 2005 DTS Twin Turbo project??
  28. No pcm data
  29. No pcm data?
  30. WIll a 98 vin 9 motor go into a 94 STS
  31. another newbie HG question
  32. NEW - 2002 Head Gasket Failure - Best Fix...
  33. Failed Smog Emissions Northstar
  34. What could it be?
  35. Exchange fluids how often?
  36. Tuning thread. Disappointed, but I understand.
  37. looking to buy a Caddy
  38. AC Delco platinum plug gap settings for N*
  39. how do i get my car to northstar preformance, uh cheaply?
  40. Engine 'misses' at stoplights
  41. where to get my head gasket repaired?
  42. Engine Shaking
  43. 4.6 Prevention and maintenance for longer life IE head gaskets.
  44. How to properly switch from red to green in a 2000 STS
  45. Water Pump Issue
  46. Lucas Oil Stabilizer
  47. Rough idle and low speed chug
  48. barS headgasket repair, has anyone tried it?
  49. Secondary Air Injection Check Valve... Bent?
  50. 2000 STS motor mount help?
  51. Oil pressure dummy light flickers...
  52. Head Bolts...
  53. Slight stumble, no codes
  54. 97 Deville wont start in the morning
  55. Stud Kit Help
  56. A kitten caused my Serpentine Belt to come off
  57. Check Coolant Level
  58. Cleaning Heads and Block
  59. Over Heating... HELP!!!
  60. 2001 deville rough idle
  61. engine grounds
  62. manifold blowoff
  63. sealant for blown heads?
  64. 1994 STS Overheating (I think)...
  65. Block Identification Numbers
  66. Snapping noise when coming to a stop..Answered Finally!!!
  67. Overheating Eldorado Help
  68. need some help
  69. 05' STS. Little help with P0102 please
  70. 2000 DTS P0300 code
  71. Head gasket repair
  72. P041 1994 deville concours
  73. Quick Oil Question
  74. rough idle, no codes, rough start
  75. coolant leak
  76. STS Radiator Hose Replacement
  77. 95 Eldorado ETC - Cooling system
  78. power steering line: o-ring?
  79. broken bolt in oil pan
  80. Water pump & crossover gasket - $$$$
  81. Help Me Please
  82. Rad Cap PSI was wrong
  83. Coolant Leak. Where's it coming from?
  84. Water pump Purge line?
  85. 5w30 or 0w30
  86. Destroying a N* Engine
  87. N* engine removal - newbee
  88. 02 DHS overheating
  89. TCC Stuck Off
  90. No clue what to do. Northstar blues
  91. problem with map sensors
  92. 2001 caddy sts seville tranny
  93. What is going on with the car?
  94. Spark Plug Wires
  95. "Hush" or "Gasp" Before Expected Throttle Response
  96. my 93 ETC Eldorado N* has a question for you guys
  97. Which spark plugs to buy?
  98. Thoughts on Dex-Cool and Head Gaskets
  99. 2001 cadillac deville small hesitations
  100. Normal Operating Temperature?
  101. Intermittent starting issue 97Seville SLS
  102. Trouble finding exhaust leak 99 Deville Y motor
  103. Is 235 too hot for a N*star on hilly roads?
  104. Spark Plugs ACDELCO or somthign els ?
  105. Good mechanics to fix head gasket in Oceanside, California area
  106. rough idle, only when in gear and brake on
  107. The first head gasket failure - 1 out of around 90 or so
  108. Tranny problems?
  109. how to install serpentine belt on 98 concours
  110. engine swap
  111. Why high fuel pressure?
  112. 1997 Northstar low speed hesitation and noise
  113. 2001 DeVille DHS / North Star motor losing power
  114. Air-Dam / Belly Splash Guard importance on cooling your N*
  115. Make Your Own Damn Motor Mount
  116. cooling fans inop p01660
  117. Hard shifting 1-2 Help!
  118. Fabricated Torque Strut for the 2000+ Northstar
  119. Horrible Engine Bucking 93 N* Allante
  120. 1998 Seville STS Performance Engine Build - STAGE I
  121. My pulley melted
  122. 01 Deville issues, no codes, no check engine light
  123. '96 Deville Coolant Change
  124. Overheating
  125. White smoke after changing starter (by removing intake manifold)
  126. No current codes but...
  127. N* Powered Camaro
  128. Strange coolant/heat issue 99 STS
  129. 1998 STS engine full of mystery sludge?!
  130. Rough idle-stumble on accel
  131. 95 Eldorado 4.6L Engine stalls
  132. Oil in intake manifold 4.6 1993
  133. 98 Deville Concours Preformance Exhaust???
  134. Engine year compatibility
  135. Sucessful Northstar head gasket repair in a bottle
  136. PCM 09354896 code DCHJ
  137. 1997 4.6 eldorado up hill over heats
  138. fuel injector ohms
  139. 93 sts fuel rail removal tools
  140. Air ride compressor
  141. Overheating??
  142. Codes P0122 and P1122...
  143. Motor mount replaced!! WTF!!!!!
  144. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  145. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  146. Long road trips good for the Northstar?
  147. headgaskets a 2nd time?
  148. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  149. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  150. Car not turning over
  151. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  152. Transmission issue
  153. spark plugs
  154. Yearly engine oil changes really necessary?
  155. Overheating problem
  156. maybe you all know more
  157. What Oil For Northstar Cams and Flat Tappets?
  158. 93 seville sts fuel rail
  159. rear main seal
  160. 93-99 Camshaft picture needed
  161. Seville 03 shaking problems after tune-up.
  162. is it the head gasket again?
  163. Problems with starting the engine
  164. Adding an Electric water Pump 95 Northstar
  165. 1995 northstar for sale *LOCKED*
  166. After WOT Car smells strong of sulfur , rotten eggs
  167. Dexool Questions
  168. 2002 caddy deville
  169. Limp. Mode help
  170. Lifter starting to tap and needs replacing,
  171. Reg oil or Synthetic oil
  172. Coolant Shooting Out
  173. Random light miss during constant hwy cruising
  174. Which PCM??
  175. Fuel Injector O-Rings- Where go?
  176. air in cooling system
  177. Best oil and spark plugs for the northstar 4.6L
  178. Enginge doesn't crank
  179. Help!! Engine idling with hiccups
  180. Tach
  181. the day has come: headgasket
  182. '99 Seville STS
  183. What are the differences between 99> and 00< motors?
  184. Why do these motors break rods?
  185. pretty betty deville
  186. how reliable is northstars limp mode
  187. 1999 deville almost overheating
  188. 3.71 ever better with smaller wheels?
  189. Refrigerant pressure
  190. Minor Coolant Leak
  191. 93 sts misfires, stalls, very rough idle, looking for cause
  192. Any thoughts? Code P1350 p1375
  193. Injector spec for a Y2000 N*
  194. oil cooler
  195. TPS issue: Codes P0122, P1122. Help!
  196. Need Help Installing Air Filter ?
  197. 2002 Deville coolant leak
  198. Blew the head gaskets replacing the motor
  199. 1997 deville stalling at idle
  200. bad headgasket
  201. N* running Hot, Real Hot
  202. 99 deville oil pump
  203. 2001 Northstar AIR Valve
  204. Hydraulic valve-lash adjustor evaluation?
  205. 99 deville - RFA U1000 Help
  206. 91 GMC Sierra, with a Northstar?
  207. 96 96 Northstar Noise and Oil light issue With Video
  208. Speedomoter Reads wrong
  209. 2001 Deville Falls Dead
  210. 98 sls overheating
  211. EVAP Purge Solenoid
  212. P0171, P0174 After replaced Plenum
  213. 97 deville overheating??
  214. Batteries, voltage, power, and Optima
  215. Intake Manifold Removal Snag
  216. Smoke
  217. Come for a vacation while your HG's are replaced
  218. Exhaust manifold swap?
  219. Temp Indicator Question!
  220. Does Anyone Have Any Ideas???
  221. 2001 deville misfire
  222. '98 heads and cams on a 2000 block
  223. Fuel Rail / Fuel Injector Removal
  224. No Spark
  225. Puffs of smoke while revving in park
  226. Warping the Heads???
  227. A/c Discharge Hose
  228. Northstar Valve seals?
  229. Main studs?
  230. Notice of price increase on HG replacement
  231. Mystery Vacuum Hose
  232. Bad Thermostats or blown Head Gasket??? Help
  233. timeserts
  234. Northstar Engine belt
  235. Question about Time Serts?
  236. Iridium Spar Plugs
  237. Stock crank HP?
  238. How much better are the 00+ headgaskets.
  239. 97 ELDARADO w/ blown H/G
  240. allante 9 engine swap to a y engine
  241. Weird transmission behavior - any ideas?
  242. 3" Exhaust all the way back?
  243. FWD Sump swap for RWD?
  244. Early engine number needed
  245. Low oil pressure enigine stop no start
  246. Need Motor Mount R&R procedure in Tech Tips
  247. Crankshaft Position Sensor
  248. 2002 Eldog
  249. changing starter on 1998 deville--have you done it?
  250. 01 STS - Engine cutting out on accel