1998 BJ Familia 1400cc cuts out randomly, but normally at low reves, is sometimes reluctant to restart. P1345 CMP Sensor Code, tested sensor (thought OK) tested wiring continuity (OK), checked and cleaned all earths. When it won??
franc123,
Oct 18, 8:03pm
The ECU would have to be suspect assuming that the power supply and earths are all OK, although it seems strange that its only throwing the one code up.
fordcrzy,
Oct 18, 8:10pm
this my be a real long shot but its not a bad dash cluster thats bringing down the ignitor! also the 5 volt signal power could be brought down by other things like TPS etc.try putting your volt meter on the 5 volt line to the CMP and see if it stays constant.
bigfatmat1,
Oct 18, 8:11pm
the later mitsi computers do not give trouble as a rule of thumb when you cleared the code and the car faulted did that code come back
carmedic,
Oct 18, 8:15pm
Tried it does.
carmedic,
Oct 18, 8:16pm
bigfatmat1 wrote: the later mitsi computers do not give trouble as a rule of thumb when you cleared the code and the car faulted did that code come back[/quote Yes the second it faults, it throws the same code every time.
bigfatmat1,
Oct 18, 8:22pm
you would need to use a scope to see whats happening when it faults does the car run with it unplugged! if so is it hard to start with it unplugged I am not familiar with this car. What type of sensor is itI have not struck this problem on this car I have struck it on a nissan crank sensor and that problem was the gearbox bolts had not been put back in the correct places or torqued up correctly causing distortion of the crank signal and bringing up cas code
bigfatmat1,
Oct 18, 8:23pm
with a scope you can see the voltage and signal at the same time then you can retest it at the back of the ecu while driving and record it
bigfatmat1,
Oct 18, 8:26pm
where is the sensor and what is the pickup!
carmedic,
Oct 18, 8:37pm
It won??
franc123,
Oct 18, 8:40pm
Really!Did the tone wheel get distorted or did the bolts damage it or something!Had an 02 Wingroad with a QG15 in it that allegedly stopped the other day and had a CAS code in it, which deleted straight away and hasn't given a problem since, this is the engine that uses an identical sensor for both cam and crank signals.I swapped the sensors over to see if the same code would get thrown back but nothing has happened as yet.
ginga4lyfe,
Oct 18, 8:40pm
has anyone worked on the engine recently! maybe the cam sensor cannot pick up the position at times, maybe the pickup on the cam is stuffed!, may pay to replace the cam pully!
carmedic,
Oct 18, 8:47pm
No ones been there recently however there is certainly evidence of previous interrogation! As I said probe marks on loads of wires, bolt missing from the ECU, Slightly rounded screws on engine sensors etc. That said it??
mellisa2000,
Oct 18, 9:45pm
Is it a multipoint EFI or CFI! The CFI has 2 injectors inside what looks like a carb (EA Falc. Style). The Injectors in the CFI are notoriously dodgy, giving no or poor fuel flow and poor spray pattern. No injection=no spark. 1400cc! Sure!
carmedic,
Oct 19, 4:54am
Sorry 1,490cc (so 1500cc) its multi point.
paul271,
Oct 19, 7:13am
I've seen that before with a Vq engine, had a clutch done and they missed a bracket off the bellhousing. The lack of that bracket changed the magnetic field around the crank angle sensor and messed with the signal back to the computer. Replaced the bracket and all was well. Go figure! Who said working on cars was easy.
paul271,
Oct 19, 7:15am
These engines are bad for air flow meters, done quite a few now. Will pay to check the voltages you are getting out of it when running and cranking. Also have heard that the coils can break down as well. Havent seen one myself, but have heard of it happening on a few.
carmedic,
Oct 19, 3:09pm
ECU replaced, it??
fordcrzy,
Oct 19, 5:49pm
interesting.the mazda ECU's of that vintage are pretty reliable.
carmedic,
Oct 19, 7:14pm
It??
carmedic,
Oct 20, 8:02am
Guess what! After a MASIVE test drive last night. Got in it this morning to move it out the workshop and it cuts out, very difficult to restart, same code. AHHHHHHHHHHHHHHHHH Should have been a plumber!
carmedic,
Oct 20, 12:38pm
Bypassing the wiring to ECU is certainly the next plan as is a crank sensor (although I have tested it) plus this fault seems unafected by temperature. I??
mellisa2000,
Oct 20, 11:21pm
There Fixed it. Fish
bae13,
Oct 21, 7:48pm
the cam sensor is a single bolt mitsi type! the wiring plug comes in and the sensor does a 90deg bend then a 90 deg bend back the other way, (hard to describe with words) on that flat bit it should look like a square, the wiring pins in the sensor come down and solder to the circuit board under neath this, you can trim the folded over plastic bits back and have a look, they ( the pin/connection) break off in there, when your checking it you usually make a contact, as soon as you dont touch it the loom weighs it down and with vibration it goes open circuit. these sensors are common as to do this, same as the ones mitsi/mazda/hyundai use in the transmission input/output sensors. you can solder the pins up and confirm the diagnosis, but if you do see the bad solder joins then replace it, soldering will confirm but not the best repair
bae13,
Oct 21, 7:49pm
when you see the sensor all my jargon will make sense. i hope
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