Volvo AWD 850 Forum

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No Start 850

posted by  Dave Spriggs on  Thu May 14 18:35 CST 2009
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last visit: Mon Sep 7 07:15 CST 2009
[RELATED]

If you DO NOT have spark or fuel, you may want to check the RPM sensor, a.k.a. Crankshaft Position Sensor. This sensor is a permissive; during a start, the engine must attain at least 2500 RPM, at which time this sensor will send a signal permitting fuel and spark. If it is defective and does not send the proper signal, you can crank all day, and nothing will happen.

It is located at the rear of the engine block at the top of the flywheel on the transmission bell housing.

If this unit is defective, it should set a code.

CODE Fenix 5.2 System
The Fenix 5.2 system is used on the 10 valve non turbocharged 850

PROBABLE CAUSE for Volvo vehicles
1-3-1 Ignition System RPM signal
--
Dave in Virginia; 1998 V70 T5(M): IPD MOTRONIC+ ECU Upgrade, Sport Muffler, IPD Strut Tower Brace; VDO Boost Gauge, IPD Anti-Sway Bars, Rocha ABS Control Unit, Koni FDS Struts and Shocks/// 1988 245 DL Wagon// 1967 MGB Roadster






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New No Start [850]
posted by  Stickbuilder subscriber  on Wed May 13 04:17 CST 2009 >
  • New No Start [850]
    posted by  KlausC subscriber  on Wed May 13 04:50 CST 2009 >
    • New No Start [850]
      posted by  Stickbuilder subscriber  on Wed May 13 07:06 CST 2009 >
      • New No Start [850]
        posted by  KlausC subscriber  on Wed May 13 09:35 CST 2009 >
        • New No Start [850]
          posted by  TimeToBakeTheDonuts  on Thu May 14 16:13 CST 2009 >
        • New No Start [850]
          posted by  Stickbuilder subscriber  on Mon May 18 03:50 CST 2009 >
    • New No Start [850]
      posted by  Dave Spriggs subscriber  on Thu May 14 18:35 CST 2009 >
  • New No Start [850]
    posted by  will rehsper subscriber  on Thu May 14 02:33 CST 2009 >
    • New No Start [850]
      posted by  Stickbuilder subscriber  on Thu May 14 03:25 CST 2009 >


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