Question about 2002 Volvo S80

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No start replaced timing belt and resealed cam carrier now wont start and po342 cam sensor signal high in ecm?

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It sounds like the cams are out of sync. There are very specific directions for re-timing the cams and CVVT unit. You will have to take it to a Volvo specialty shop or to the dealer. You might try V70R.COM or BRICKBOARD.COM. Someone there might have the specific instructions, but they are very involved and require special tools to hold the camshafts in place while torquing the CVVT unit.

hope this helps.

Posted on Feb 28, 2009

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Code p0370 resolution to higth


code po370 refers to timing reference, high resolution signal--malfunction====causes -- wiring---crank position sensor---RPM (tacho) --cam shaft position sensor---ECM . Have the ECM professionally checked along with the 2 sensors

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Code p2089 dodge sprinter 2007


DTC P2089 A - Camshaft Pos Actuator Ctrl Circ Hi Bank1
On this code the cam or crank sensor is normally the culprit. I would replace the crankshaft position sensor. There is anothe possible sensor that can cause this to happen vehicle speed sensor and engine coolant temp sensor. The way it works is The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range. But the most common problem is the cam or crank sensor Start with the crankshaft sensor and then camshaft sensor.

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Intrepid 2001 3.2 ltrs. Starting for this answer you gave to someone 6 months ago: ' The timing chain has jumped. It starts with the cam sensor unplugged because the ecm sees the camshafts aren't...


If you disconnect the Cam sensor with key on or engine running then you will get a Cam sensor code,If you disconnect and the vehicle runs yes you will get a Cam code (because its disconnected it will state Cam sensor high),If your vehicle has jump timing belt you will also get a MAF code. You may want to get the MAF check out,For now review your timing markscansmo_219.gifcansmo_220.gif

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1 Answer

Honda accord incorrect gear ratio code p0370


Honda P0370 - Timing Reference High Resolution Signal A Malfunction.

The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important inputs by the PCM for fuel control and timing. This test monitors the number of high resolution pulses which have been missed (not detected). It's based on a comparison between the number of pulses that were detected since the last pump cam pulse and the number of the pulses that should have occurred. There are approximately 64 high resolution pulses for every cam pulse.

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Possible Solutions:
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Not sure where you got incorrect gear ratio. This P0370 DTC is for what I have listed above.

Jan 19, 2011 | 1998 Honda Accord

1 Answer

3.1 runs fine then wont start if i turn it off at operating temp. Here's the thing though. in the no start situation it has fuel pressure on the fuel rail and fire at the plugs.THe computer has been...


HI, ok lets address each issue as your asked 1. Timing belt: since this engine uses a timing chain and it runs fine for the most part its unlikely to be the cause. 2. Ignition module: well the module not only sends the signal for spark timing but it also uses another signal for the fuel injectors. Since these ignition modules are very sensitive to heat the module may fail only when it is hot. So yes it could be the ignition module. 3. A fuel problem: Because you have fuel that sprays a foot high does not mean it has proper pressure. think of it as a garden hose the water flows out the end of the hose normally but when you place your thumb over the hose it squirts harder. You are trying to release the fuel from a much larger fuel rail threw a small shrader valve. Electric fuel pumps are little motors turning at very high rpms. when they get hot after use they draw more amperage and produce less volume and pressure. So yes fuel could be the issue. 3. Injectors clogged: Your right unlikely but you may want to do a resistance check of the injectors while cold then one while hot. You may find even one shorting out after it gets hot and this will shut down the whole bank of them. 4. Crank sensor: the crank sensor sends a pulse to the DIS module the ECM then controls the demand for fuel and timing. These crank sensors are prone to cracking and letting oil wick into the sensor apply heat and it can raise the resistance and make the sensor fail till it cools. So yes the crank sensor can cause this type of no start. 5. Cam sensor: no this model 3.1 did not use a cam sensor. 6. Intake gaskets: this would have to be one very large leak when hot. you could try pouring oil over the intake gasket area while cranking and see if it fires over. The oil is should be heavy and thick enough to seal it for a short time or show where it sucks it in. a few things you over looked are the importance that the temp sensor and TPS sensor play during a hot start. If the ECM thinks that the engine is cold it uses injector pulse like a choke on a carburetor. Good luck on your adventure I hope this has helped.

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2 Answers

Installed new head gasket, new timing belt, two new valves. drove 5 miles engine stalled. no spark or injector pulse. installed new crank sensor, cam sensor, coilpack, new ECM still wont start


It soundslike your timing belt may have a problem. It may have failed prematurely, thetensioner may have failed, the tensioner pulley or idler pulley may have wornout, or the timing may be incorrectly set. No spark can usually be guaranteed acrank sensor fault, cam sensor fault, or timing fault. If the timing checksout, maybe you got a bad crank sensor or cam sensor, but I am 98% sure it'srelated to timing.

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2 Answers

I have 1999 kia 1.8 wont start i change the cam sensor and crank sensor and coils and i still dont have a spark


hi either you got a wire shorted out or the ecm failed on ya.
another thing to check is timing belt or chain you couldve popped the belt or jumped timing and the syncroing is off or got a bad ground.to check the timing belt loosen a few of the top screw on the timing cover and shine a light down there to see if the cams are turning if they are so far so good.then get a scanner on the car and see if the crank and/or cam signal is there and go from there.

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1 Answer

I have a lhs 1996 Chrysler. The car wont start and the engine fuze burns out.


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Have a 1991 buick lesabre 3800 v6, cant get to run, have had in a buick dealership replaced coil pack and icm, ran good for 2 then stopped, took back to dealership and the have been unable to find what is...


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