Originally Posted by
DerrickRL
Hi.
Only fault code that shows is for crank sensor P0335 when car stalls and engine light comes on. Codes clear, car starts, ticks over but if revved cuts out and same fault code appears. Second hand RCM was worse than mine so sending that back as was under a 7 day warranty along with PCM. Everyone I spoke to in the UK is baffled by the not revving over 2500 rpm, no one seems to have come across that fault but found a discussion on this sight about the lack of revs and the fix was cleaning the CAT, so i really think i have a number of issues going on.
Spoke to a Crossfire parts specialist in UK and they said 3 possible causes, CPS, Bad connector or cable, bad PCM. I followed all of the instructions in the workshop manual to check voltages, etc and cannot find anything wrong. Manual suggests replacing CPS.
I found a specialist in UK that repairs ECU's (PCM) but they said they have problems with the codes for Crossfires, so said they will look at it for me and if they can't find problem and fix it they will not charge me.
Bought third CPS today, which again is a BOCSH (second was a BOSCH) and will pull that to see if I can see anything that has caused the problem and fit the new one.
The Crossfire is a fairly rare car in the UK so finding anyone who knows how to fix them is difficult. I've had mine 10 years now and always been able to solve problem but this one has me beat. I'll try the owners club, thanks for the suggestion.
Here in the USA, with the last two Crossfires I've had, if you pressed the pedal to the floor in Neutral, the engine sits at 4100 rpm. I would think yours is the same. If the CAT is blocked, I'd expect the engine to vary in speed, not sit at 2500.
Now, the PTCM runs the engine based largely on the CAM and CRANK sensors, they tell the PTCM what position the crank and cam are in at any particular time - so it knows when to fire injectors and plugs. I suppose if there is a slight variation in the phase/timing one of them is producing, the PTCM would get confused. If I had this issue, and easy stuff did not resolve this, I'd replace in the following order:
Crank Sensor
Cam Sensor
MAF
Throttle Body....
... with a thought that a clogged cat can cause issues. But on the OTHER hand, when the engine approaches. 2500, what does a live data reader show as to:
Timing advance
Throttle position
As the engine speeds up, the timing has to advance a little so the detonation happens in time to help push the piston down, if it does not advance enough, power is lost. Could a sensor be causing the PTCM to alter timing such that 2500 is the limit? No "code" is going to tell you this, the person working on it has to have a good understanding of how the engine works and how timing, fuel mixture, etc. work together. But a sensor going nuts can cause all sorts of odd issues.
Just my thougths....