engine wont start
#11
01-23-2012, 04:01 AM
Super Moderator
Fom RAVE engine management:
is replaced, TestBook/T4 must be used to select the correct tune to match the engine fitment.
Like they say in Pittsburgh - it's stealer time... or at least a very advanced scanner. Or maybe swap ECUs?
And more info:
and more -
From D1 4.0 engine :
And from D2:
of the camshaft gear wheel in relationship to the sensor.
So mixing engine halves from very different years may be pricey.
A single ECM is used for the control of the existing 4.0 litre engine and the new 4.6 litre engine introduced with 03
model year vehicles for the NAS market only. The ECM contains the tunes for both engines variants. When the ECM
model year vehicles for the NAS market only. The ECM contains the tunes for both engines variants. When the ECM
is replaced, TestBook/T4 must be used to select the correct tune to match the engine fitment.
Like they say in Pittsburgh - it's stealer time... or at least a very advanced scanner. Or maybe swap ECUs?
And more info:
The ECM memorises the positions of the crankshaft and the camshaft when the engine has stopped via the CKP and
CMP sensors. This allows immediate sequential fuel injection and ignition timing during cranking. This information is
lost if battery voltage is too low (i.e. flat battery). So the facility will be disabled for the first engine start.CMP sensors. This allows immediate sequential fuel injection and ignition timing during cranking. This information is
and more -
From D1 4.0 engine :
The camshaft position sensor is located in the engine
front cover. It produces one pulse every two
revolutions. The signal is used in two areas, injector
timing corrections for fully sequential fuelling and
active knock control.
If the camshaft sensor fails, default operation is to
continue normal ignition timing. The fuel injectors will
be actuated sequentially, timing the injection with
respect to top dead centre. Injection will either be
correct or one revolution out of synchronisation. The
fault is not easily detected by the driver. The fault is
indicated by illumination of the malfunction indicator
light (MIL) on North American specification vehicles.front cover. It produces one pulse every two
revolutions. The signal is used in two areas, injector
timing corrections for fully sequential fuelling and
active knock control.
If the camshaft sensor fails, default operation is to
continue normal ignition timing. The fuel injectors will
be actuated sequentially, timing the injection with
respect to top dead centre. Injection will either be
correct or one revolution out of synchronisation. The
fault is not easily detected by the driver. The fault is
indicated by illumination of the malfunction indicator
And from D2:
The CMP sensor is located on the front of the engine, above and behind the crankshaft pulley. The CMP sensor is a
Hall effect sensor producing four pulses for every two crankshaft revolutions. The sensor is positioned close to the
camshaft gear wheel, the gear wheel has four slots machined at 90
Hall effect sensor producing four pulses for every two crankshaft revolutions. The sensor is positioned close to the
camshaft gear wheel, the gear wheel has four slots machined at 90
° intervals. This allows the ECM to recognise 4
individual cylinders every camshaft revolution or all 8 cylinders every crankshaft revolution.
The CMP sensor Hall effect works as a magnetic switch. It switches battery voltage on or off depending on the position
individual cylinders every camshaft revolution or all 8 cylinders every crankshaft revolution.
The CMP sensor Hall effect works as a magnetic switch. It switches battery voltage on or off depending on the position
of the camshaft gear wheel in relationship to the sensor.
So mixing engine halves from very different years may be pricey.
Last edited by Savannah Buzz; 01-23-2012 at 04:19 AM.
#12
01-24-2012, 08:30 AM
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I think I've solved the problem I'm in the middle of changing the fly wheel to the gems and the cam pullie and chain and putting front and rear sensors of of gems in this should solve the problem I've been told fingers crossed thankyou for all your help Wayne from England uk I'll keep you'd informed of the progress
#13
01-24-2012, 08:30 AM
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May have solved problem
I think I've solved the problem I'm in the middle of changing the fly wheel to the gems and the cam pullie and chain and putting front and rear sensors of of gems in this should solve the problem I've been told fingers crossed thankyou for all your help Wayne from England uk I'll keep you'd informed of the progress
#14
01-24-2012, 03:59 PM
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