SL/R129: possible CKP issue, if not running out of ideas
Thread Starter
Junior Member
Joined: Sep 2011
Posts: 27
Likes: 1
Ford Expedition EL, F250
possible CKP issue, if not running out of ideas
Symptoms -Vehicle has starts fine, rough idle at times, stalls when it approaches 80C, cant be restarted until it cools off
-I cant fine any harness locations that appear to be degrading
-Cap and rotor are not in the best of shape were cleaned but doesn't seem consistent with the current issue
Diagnostic Steps Performed/Parts Replaced -Fuel Rail maintain 3.5bar
-Fuel Pressure regulator replaced
-Engine mounts
-Trans Mount
-Knock sensor was replaced when trans was rebuilt
-Trans Removed and Rebuilt
-Radiator replaced with trans
-Rear Diff resealed
-New engine harness in 2011
-Replaced the CKP twice, neither unit shows within the 700-1400 ohm range, shows open both cold and warm
-Checked caps and rotors, condition is not stellar, but not consistent with the stalling only when warm
Codes that register once the engine dies are
2 Maximum Retardation Achieved
3 ECT B11/9 From LH2 - SFI Implausible
6 Camshaft Position Sensor L5/1
P0009 Undocumented Code
P000A Undocumented Code
11 Reference Resistor R16/2
12 Tn Engine Speed Signal (Output) Short Circuit
Details of Question I'm at a bit of a loss on what to try next. Seems off that the CKP is not in range, I don't have a control at the moment to compare it to. Does anyone have a 95 that can test their CKP and let me know if it comes back with 700-1400 ohms resistance?
-I cant fine any harness locations that appear to be degrading
-Cap and rotor are not in the best of shape were cleaned but doesn't seem consistent with the current issue
Diagnostic Steps Performed/Parts Replaced -Fuel Rail maintain 3.5bar
-Fuel Pressure regulator replaced
-Engine mounts
-Trans Mount
-Knock sensor was replaced when trans was rebuilt
-Trans Removed and Rebuilt
-Radiator replaced with trans
-Rear Diff resealed
-New engine harness in 2011
-Replaced the CKP twice, neither unit shows within the 700-1400 ohm range, shows open both cold and warm
-Checked caps and rotors, condition is not stellar, but not consistent with the stalling only when warm
Codes that register once the engine dies are
2 Maximum Retardation Achieved
3 ECT B11/9 From LH2 - SFI Implausible
6 Camshaft Position Sensor L5/1
P0009 Undocumented Code
P000A Undocumented Code
11 Reference Resistor R16/2
12 Tn Engine Speed Signal (Output) Short Circuit
Details of Question I'm at a bit of a loss on what to try next. Seems off that the CKP is not in range, I don't have a control at the moment to compare it to. Does anyone have a 95 that can test their CKP and let me know if it comes back with 700-1400 ohms resistance?
Member
Joined: Feb 2013
Posts: 144
Likes: 7
From: Seattle
1999 MB E430 1998 SL500
Try this
I'm not sure what the "CKP" is that you mentioned is but this is a classic symptom of the crank position sensor failure. These are cheap ($80) and easy to replace so give it a shot.
Newbie
Joined: Oct 2014
Posts: 1
Likes: 0
1995 SL500
Crankshaft sensor measurements
I measured CKP in my MB 1995 SL500. Cold= 840 Ohms, Hot: 1160 Ohms.
I have the same condition: When it gets hot @ 80C. The car starts to shake and dies. I will re-start after it get cool @ 30 Minutes.
I have the same condition: When it gets hot @ 80C. The car starts to shake and dies. I will re-start after it get cool @ 30 Minutes.
Thread Starter
Junior Member
Joined: Sep 2011
Posts: 27
Likes: 1
Ford Expedition EL, F250
