: Northstar Engines and System Technical Discussion



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  1. 2004 dhs starting problem
  2. Attention All Northstar Technicians- New Northstar Drilling / Tapping Machine
  3. headgasket being repaired
  4. High mileage oils
  5. P0420 code
  6. Wot?
  7. You'll never guess what I broke today
  8. 95 STS fluctuating rpm and slight bogging while driving
  9. 1993 Cadillac sts 4.6 idle fluctuating
  10. SLS engine and trannie in a STS?
  11. Air conditioning compressor clutch bearing
  12. Manifold Blowoff Leaking - parking break stuck
  13. 110,000 miles, what else should be done along with head gaskets?
  14. "Tic Tic Tic" sound on 02 SLS
  15. Flashing SES/P0300
  16. Working on mama's Caddy. Need help with O2 Sensor
  17. Head Gasket?
  18. Investors needed. Big time.
  19. thermostat housing gasket? 99 sts
  20. New England area Northstar mechanics? (Head Gaskets)
  21. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  22. That's a lot of smoke! (exhaust)
  23. Mobile 1 Clean High Mileage
  24. Chocolate Milk in the oilpan
  25. Heater Core Inlet Connector O-Ring Leak
  26. Breakthrough for anyone with bad exhaust cams
  27. 96 Aurora 4.0
  28. Idle Too Low P0506 New Throttle Body?
  29. Northstar mechanic on Long Island?
  30. 4t80E shift solenoid part #
  31. B0149
  32. Code P119
  33. HeadGasket Repaired - cost $1500 - but more problems?...
  34. 95 Eldo headgaskets?
  35. Only overheats when the AC or the heat is on....
  36. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  37. Aftermarket Temp. Gauge
  38. Coolant Supply Line
  39. Idles rough after being started in the morning
  40. Best way to clean the engine bay?
  41. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  42. Tricky Coolant Leak
  43. Coming back home
  44. 2000 DHS exhaust smoking and running poor
  45. 4 Engine Questions
  46. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  47. Any thoughts on this...
  48. tap for time serts
  49. Just bought a 98 Deville, was overheating, am I paranoid?
  50. 208 at 40+ 212 at <40
  51. low oil pressure
  52. Batman's Northstar
  53. Another Wont crank issue
  54. Woohoo...Head gasket repair is done
  55. 1998 Deville acceleration slip
  56. Steering joint bolt
  57. My bone stock '98 STS pulled a 14.95 in the 1/4
  58. Weird Noise
  59. Heartland High Mileage Oil Changer Review
  60. 95 sls n* solenoid clicking
  61. Interesting find
  62. Valve cover bolts???
  63. Timing mark clarification
  64. Engine in the car repair... how many gaskets?
  65. Front hydraulic motor mount
  66. I can't get the CV joint to separate from the Trans
  67. 1993 Caddillac Eldorado - Timing Chain Issue
  68. Stud Kit Success!!
  69. Ways to increase performance?
  70. Radiator leaks and engine runs rough, no codes
  71. Ethanol Blends
  72. 98 Eldorado Starting Problems
  73. Problems removing head dowels
  74. Another visit to the track
  75. 95 vs 99 Northstar
  76. Tuning up the engine.
  77. Head Gasket Repair At Your Location!
  78. Head Gasket Paranoia
  79. catalyst converter replaced
  80. 93 STS Lots of smoke after fillup
  81. Exact oil filter wrench for 1996 Seville SLS
  82. new northstar
  83. Super Noob needs help overheating
  84. Nitrous Help: 01 DTS
  85. Head gasket removal, best practices
  86. 01 deville o2's locations?
  87. Head stud kit
  88. Documenting a swap: N* 4.6 / 97 STS
  89. 2005 DTS Twin Turbo project??
  90. No pcm data
  91. No pcm data?
  92. WIll a 98 vin 9 motor go into a 94 STS
  93. another newbie HG question
  94. NEW - 2002 Head Gasket Failure - Best Fix...
  95. Failed Smog Emissions Northstar
  96. What could it be?
  97. Exchange fluids how often?
  98. Tuning thread. Disappointed, but I understand.
  99. looking to buy a Caddy
  100. AC Delco platinum plug gap settings for N*
  101. how do i get my car to northstar preformance, uh cheaply?
  102. Engine 'misses' at stoplights
  103. where to get my head gasket repaired?
  104. Engine Shaking
  105. 4.6 Prevention and maintenance for longer life IE head gaskets.
  106. How to properly switch from red to green in a 2000 STS
  107. Water Pump Issue
  108. Lucas Oil Stabilizer
  109. Rough idle and low speed chug
  110. barS headgasket repair, has anyone tried it?
  111. Secondary Air Injection Check Valve... Bent?
  112. 2000 STS motor mount help?
  113. Oil pressure dummy light flickers...
  114. Head Bolts...
  115. Slight stumble, no codes
  116. 97 Deville wont start in the morning
  117. Stud Kit Help
  118. A kitten caused my Serpentine Belt to come off
  119. Check Coolant Level
  120. Cleaning Heads and Block
  121. Over Heating... HELP!!!
  122. 2001 deville rough idle
  123. engine grounds
  124. manifold blowoff
  125. sealant for blown heads?
  126. 1994 STS Overheating (I think)...
  127. Block Identification Numbers
  128. Snapping noise when coming to a stop..Answered Finally!!!
  129. Overheating Eldorado Help
  130. need some help
  131. 05' STS. Little help with P0102 please
  132. 2000 DTS P0300 code
  133. Head gasket repair
  134. P041 1994 deville concours
  135. Quick Oil Question
  136. rough idle, no codes, rough start
  137. coolant leak
  138. STS Radiator Hose Replacement
  139. 95 Eldorado ETC - Cooling system
  140. power steering line: o-ring?
  141. broken bolt in oil pan
  142. Water pump & crossover gasket - $$$$
  143. Help Me Please
  144. Rad Cap PSI was wrong
  145. Coolant Leak. Where's it coming from?
  146. Water pump Purge line?
  147. 5w30 or 0w30
  148. Destroying a N* Engine
  149. N* engine removal - newbee
  150. 02 DHS overheating
  151. TCC Stuck Off
  152. No clue what to do. Northstar blues
  153. problem with map sensors
  154. 2001 caddy sts seville tranny
  155. What is going on with the car?
  156. Spark Plug Wires
  157. "Hush" or "Gasp" Before Expected Throttle Response
  158. my 93 ETC Eldorado N* has a question for you guys
  159. Which spark plugs to buy?
  160. Thoughts on Dex-Cool and Head Gaskets
  161. 2001 cadillac deville small hesitations
  162. Normal Operating Temperature?
  163. Intermittent starting issue 97Seville SLS
  164. Trouble finding exhaust leak 99 Deville Y motor
  165. Is 235 too hot for a N*star on hilly roads?
  166. Spark Plugs ACDELCO or somthign els ?
  167. Good mechanics to fix head gasket in Oceanside, California area
  168. rough idle, only when in gear and brake on
  169. The first head gasket failure - 1 out of around 90 or so
  170. Tranny problems?
  171. how to install serpentine belt on 98 concours
  172. engine swap
  173. Why high fuel pressure?
  174. 1997 Northstar low speed hesitation and noise
  175. 2001 DeVille DHS / North Star motor losing power
  176. Air-Dam / Belly Splash Guard importance on cooling your N*
  177. Make Your Own Damn Motor Mount
  178. cooling fans inop p01660
  179. Hard shifting 1-2 Help!
  180. Fabricated Torque Strut for the 2000+ Northstar
  181. Horrible Engine Bucking 93 N* Allante
  182. 1998 Seville STS Performance Engine Build - STAGE I
  183. My pulley melted
  184. 01 Deville issues, no codes, no check engine light
  185. '96 Deville Coolant Change
  186. Overheating
  187. White smoke after changing starter (by removing intake manifold)
  188. No current codes but...
  189. N* Powered Camaro
  190. Strange coolant/heat issue 99 STS
  191. 1998 STS engine full of mystery sludge?!
  192. Rough idle-stumble on accel
  193. 95 Eldorado 4.6L Engine stalls
  194. Oil in intake manifold 4.6 1993
  195. 98 Deville Concours Preformance Exhaust???
  196. Engine year compatibility
  197. Sucessful Northstar head gasket repair in a bottle
  198. PCM 09354896 code DCHJ
  199. 1997 4.6 eldorado up hill over heats
  200. fuel injector ohms
  201. 93 sts fuel rail removal tools
  202. Air ride compressor
  203. Overheating??
  204. Codes P0122 and P1122...
  205. Motor mount replaced!! WTF!!!!!
  206. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  207. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  208. Long road trips good for the Northstar?
  209. headgaskets a 2nd time?
  210. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  211. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  212. Car not turning over
  213. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  214. Transmission issue
  215. spark plugs
  216. Yearly engine oil changes really necessary?
  217. Overheating problem
  218. maybe you all know more
  219. What Oil For Northstar Cams and Flat Tappets?
  220. 93 seville sts fuel rail
  221. rear main seal
  222. 93-99 Camshaft picture needed
  223. Seville 03 shaking problems after tune-up.
  224. is it the head gasket again?
  225. Problems with starting the engine
  226. Adding an Electric water Pump 95 Northstar
  227. 1995 northstar for sale *LOCKED*
  228. After WOT Car smells strong of sulfur , rotten eggs
  229. Dexool Questions
  230. 2002 caddy deville
  231. Limp. Mode help
  232. Lifter starting to tap and needs replacing,
  233. Reg oil or Synthetic oil
  234. Coolant Shooting Out
  235. Random light miss during constant hwy cruising
  236. Which PCM??
  237. Fuel Injector O-Rings- Where go?
  238. air in cooling system
  239. Best oil and spark plugs for the northstar 4.6L
  240. Enginge doesn't crank
  241. Help!! Engine idling with hiccups
  242. Tach
  243. the day has come: headgasket
  244. '99 Seville STS
  245. What are the differences between 99> and 00< motors?
  246. Why do these motors break rods?
  247. pretty betty deville
  248. how reliable is northstars limp mode
  249. 1999 deville almost overheating
  250. 3.71 ever better with smaller wheels?