: Northstar Engines and System Technical Discussion



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  1. 4t80e side cover drain
  2. '98 STS stumbles and misses (NO CEL)
  3. MAP sensor keeps going bad - 94 N*
  4. 2004 dhs starting problem
  5. Attention All Northstar Technicians- New Northstar Drilling / Tapping Machine
  6. headgasket being repaired
  7. High mileage oils
  8. P0420 code
  9. Wot?
  10. You'll never guess what I broke today
  11. 95 STS fluctuating rpm and slight bogging while driving
  12. 1993 Cadillac sts 4.6 idle fluctuating
  13. SLS engine and trannie in a STS?
  14. Air conditioning compressor clutch bearing
  15. Manifold Blowoff Leaking - parking break stuck
  16. 110,000 miles, what else should be done along with head gaskets?
  17. "Tic Tic Tic" sound on 02 SLS
  18. Flashing SES/P0300
  19. Working on mama's Caddy. Need help with O2 Sensor
  20. Head Gasket?
  21. Investors needed. Big time.
  22. thermostat housing gasket? 99 sts
  23. New England area Northstar mechanics? (Head Gaskets)
  24. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  25. That's a lot of smoke! (exhaust)
  26. Mobile 1 Clean High Mileage
  27. Chocolate Milk in the oilpan
  28. Heater Core Inlet Connector O-Ring Leak
  29. Breakthrough for anyone with bad exhaust cams
  30. 96 Aurora 4.0
  31. Idle Too Low P0506 New Throttle Body?
  32. Northstar mechanic on Long Island?
  33. 4t80E shift solenoid part #
  34. B0149
  35. Code P119
  36. HeadGasket Repaired - cost $1500 - but more problems?...
  37. 95 Eldo headgaskets?
  38. Only overheats when the AC or the heat is on....
  39. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  40. Aftermarket Temp. Gauge
  41. Coolant Supply Line
  42. Idles rough after being started in the morning
  43. Best way to clean the engine bay?
  44. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  45. Tricky Coolant Leak
  46. Coming back home
  47. 2000 DHS exhaust smoking and running poor
  48. 4 Engine Questions
  49. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  50. Any thoughts on this...
  51. tap for time serts
  52. Just bought a 98 Deville, was overheating, am I paranoid?
  53. 208 at 40+ 212 at <40
  54. low oil pressure
  55. Batman's Northstar
  56. Another Wont crank issue
  57. Woohoo...Head gasket repair is done
  58. 1998 Deville acceleration slip
  59. Steering joint bolt
  60. My bone stock '98 STS pulled a 14.95 in the 1/4
  61. Weird Noise
  62. Heartland High Mileage Oil Changer Review
  63. 95 sls n* solenoid clicking
  64. Interesting find
  65. Valve cover bolts???
  66. Timing mark clarification
  67. Engine in the car repair... how many gaskets?
  68. Front hydraulic motor mount
  69. I can't get the CV joint to separate from the Trans
  70. 1993 Caddillac Eldorado - Timing Chain Issue
  71. Stud Kit Success!!
  72. Ways to increase performance?
  73. Radiator leaks and engine runs rough, no codes
  74. Ethanol Blends
  75. 98 Eldorado Starting Problems
  76. Problems removing head dowels
  77. Another visit to the track
  78. 95 vs 99 Northstar
  79. Tuning up the engine.
  80. Head Gasket Repair At Your Location!
  81. Head Gasket Paranoia
  82. catalyst converter replaced
  83. 93 STS Lots of smoke after fillup
  84. Exact oil filter wrench for 1996 Seville SLS
  85. new northstar
  86. Super Noob needs help overheating
  87. Nitrous Help: 01 DTS
  88. Head gasket removal, best practices
  89. 01 deville o2's locations?
  90. Head stud kit
  91. Documenting a swap: N* 4.6 / 97 STS
  92. 2005 DTS Twin Turbo project??
  93. No pcm data
  94. No pcm data?
  95. WIll a 98 vin 9 motor go into a 94 STS
  96. another newbie HG question
  97. NEW - 2002 Head Gasket Failure - Best Fix...
  98. Failed Smog Emissions Northstar
  99. What could it be?
  100. Exchange fluids how often?
  101. Tuning thread. Disappointed, but I understand.
  102. looking to buy a Caddy
  103. AC Delco platinum plug gap settings for N*
  104. how do i get my car to northstar preformance, uh cheaply?
  105. Engine 'misses' at stoplights
  106. where to get my head gasket repaired?
  107. Engine Shaking
  108. 4.6 Prevention and maintenance for longer life IE head gaskets.
  109. How to properly switch from red to green in a 2000 STS
  110. Water Pump Issue
  111. Lucas Oil Stabilizer
  112. Rough idle and low speed chug
  113. barS headgasket repair, has anyone tried it?
  114. Secondary Air Injection Check Valve... Bent?
  115. 2000 STS motor mount help?
  116. Oil pressure dummy light flickers...
  117. Head Bolts...
  118. Slight stumble, no codes
  119. 97 Deville wont start in the morning
  120. Stud Kit Help
  121. A kitten caused my Serpentine Belt to come off
  122. Check Coolant Level
  123. Cleaning Heads and Block
  124. Over Heating... HELP!!!
  125. 2001 deville rough idle
  126. engine grounds
  127. manifold blowoff
  128. sealant for blown heads?
  129. 1994 STS Overheating (I think)...
  130. Block Identification Numbers
  131. Snapping noise when coming to a stop..Answered Finally!!!
  132. Overheating Eldorado Help
  133. need some help
  134. 05' STS. Little help with P0102 please
  135. 2000 DTS P0300 code
  136. Head gasket repair
  137. P041 1994 deville concours
  138. Quick Oil Question
  139. rough idle, no codes, rough start
  140. coolant leak
  141. STS Radiator Hose Replacement
  142. 95 Eldorado ETC - Cooling system
  143. power steering line: o-ring?
  144. broken bolt in oil pan
  145. Water pump & crossover gasket - $$$$
  146. Help Me Please
  147. Rad Cap PSI was wrong
  148. Coolant Leak. Where's it coming from?
  149. Water pump Purge line?
  150. 5w30 or 0w30
  151. Destroying a N* Engine
  152. N* engine removal - newbee
  153. 02 DHS overheating
  154. TCC Stuck Off
  155. No clue what to do. Northstar blues
  156. problem with map sensors
  157. 2001 caddy sts seville tranny
  158. What is going on with the car?
  159. Spark Plug Wires
  160. "Hush" or "Gasp" Before Expected Throttle Response
  161. my 93 ETC Eldorado N* has a question for you guys
  162. Which spark plugs to buy?
  163. Thoughts on Dex-Cool and Head Gaskets
  164. 2001 cadillac deville small hesitations
  165. Normal Operating Temperature?
  166. Intermittent starting issue 97Seville SLS
  167. Trouble finding exhaust leak 99 Deville Y motor
  168. Is 235 too hot for a N*star on hilly roads?
  169. Spark Plugs ACDELCO or somthign els ?
  170. Good mechanics to fix head gasket in Oceanside, California area
  171. rough idle, only when in gear and brake on
  172. The first head gasket failure - 1 out of around 90 or so
  173. Tranny problems?
  174. how to install serpentine belt on 98 concours
  175. engine swap
  176. Why high fuel pressure?
  177. 1997 Northstar low speed hesitation and noise
  178. 2001 DeVille DHS / North Star motor losing power
  179. Air-Dam / Belly Splash Guard importance on cooling your N*
  180. Make Your Own Damn Motor Mount
  181. cooling fans inop p01660
  182. Hard shifting 1-2 Help!
  183. Fabricated Torque Strut for the 2000+ Northstar
  184. Horrible Engine Bucking 93 N* Allante
  185. 1998 Seville STS Performance Engine Build - STAGE I
  186. My pulley melted
  187. 01 Deville issues, no codes, no check engine light
  188. '96 Deville Coolant Change
  189. Overheating
  190. White smoke after changing starter (by removing intake manifold)
  191. No current codes but...
  192. N* Powered Camaro
  193. Strange coolant/heat issue 99 STS
  194. 1998 STS engine full of mystery sludge?!
  195. Rough idle-stumble on accel
  196. 95 Eldorado 4.6L Engine stalls
  197. Oil in intake manifold 4.6 1993
  198. 98 Deville Concours Preformance Exhaust???
  199. Engine year compatibility
  200. Sucessful Northstar head gasket repair in a bottle
  201. PCM 09354896 code DCHJ
  202. 1997 4.6 eldorado up hill over heats
  203. fuel injector ohms
  204. 93 sts fuel rail removal tools
  205. Air ride compressor
  206. Overheating??
  207. Codes P0122 and P1122...
  208. Motor mount replaced!! WTF!!!!!
  209. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  210. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  211. Long road trips good for the Northstar?
  212. headgaskets a 2nd time?
  213. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  214. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  215. Car not turning over
  216. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  217. Transmission issue
  218. spark plugs
  219. Yearly engine oil changes really necessary?
  220. Overheating problem
  221. maybe you all know more
  222. What Oil For Northstar Cams and Flat Tappets?
  223. 93 seville sts fuel rail
  224. rear main seal
  225. 93-99 Camshaft picture needed
  226. Seville 03 shaking problems after tune-up.
  227. is it the head gasket again?
  228. Problems with starting the engine
  229. Adding an Electric water Pump 95 Northstar
  230. 1995 northstar for sale *LOCKED*
  231. After WOT Car smells strong of sulfur , rotten eggs
  232. Dexool Questions
  233. 2002 caddy deville
  234. Limp. Mode help
  235. Lifter starting to tap and needs replacing,
  236. Reg oil or Synthetic oil
  237. Coolant Shooting Out
  238. Random light miss during constant hwy cruising
  239. Which PCM??
  240. Fuel Injector O-Rings- Where go?
  241. air in cooling system
  242. Best oil and spark plugs for the northstar 4.6L
  243. Enginge doesn't crank
  244. Help!! Engine idling with hiccups
  245. Tach
  246. the day has come: headgasket
  247. '99 Seville STS
  248. What are the differences between 99> and 00< motors?
  249. Why do these motors break rods?
  250. pretty betty deville