B787

I had the rpm pointer flickering before while driving and engine behaves normal. Drives me nut to see the rpm pointer flickering from time to time. I did my DIY earth mod, ie adding extra earth wires from battery negative terminal to any electrical harness grounding points at the engine or chassis including one to ECU grounding point near to ECU and I was glad it fix the rpm pointer going nuts. 2 years ago, it happened again and I realise some of the grounding points were coated with paint due I had the car resprayed. Cleaned up the grounding points, all ok but it still didn't fix my starting problem in the morning. Most morning start, ok and there will be a few morning, it just refuse to fire up. Few hours later, starts perfectly. I just replaced the battery and for the first time, I was able to see 100 rpm in the controller during crank. I have replaced cam sensor, crank sensor, coolant sensor, spark plugs, ignition coil. Next probably looking at Ebay for original ECU for sale.

Hi, I believe ECU will prime the fuel system for 4-5 seconds and fuel pump will cut out. At least you have 200 rpm showing during crank. Good luck.

Hi Matek, unfortunately answer is no. I have replaced both the crank and cam sensor and also coolant temperature sensor since my problem is unable to start early in the morning. Even with new cam and crank sensor, I don't see any rpm (zero rpm in the hand control display). RPM appears immediately after a successful start. Do you have a similar problem ? Chan

Hi Simon, I couldnt start my car again this morning so I hooked up the hand control device to check if RPM signal was avail as per your advice. Once hooked up and powered up, Test RPM showed 000. When I start the engine, with engine still cranking, RPM still show 000. Is this normal or RPM signal is not available ? Thanks.

Hi Simon, Thanks for the info. My dealer here reckon it could be a faulty cam sensor or a crank sensor but unfortunately they didnt have any in stock. I managed to get a used cam sensor which is now fitted to the car and hopefully starting problem gone. Problem is this is an intermittent fault and will connect up the hand control once problem arise. If this is an connection issue inside the Link ECU, can this be rectified ? Just thinking and planning ahead. Thanks. Chan

Car, a 1998 WRX with Possum Link ECU has been experiencing starting problem, ie unable to start usually in the morning. This morning, after 6-7 long start attempts, the engine just refuse to fire up. Fuel pump priming ok which I always wiat for the fuel prime to complete before turning ignition switch to START. After 2-3 hours, I came back and try to start her up and the minute I turn the ignition switch to ON, there was some sort of weak detonation in the engine which I can feel the engine turn a bit through vibration and some faint pop sound from the exhaust. This is obvious as excess fuel in all the cylinders from previous 6-7 start attempts. After fuel priming completed, I turned the switch to START and she fired up with ease. What puzzled me is why there is detonation in the engine when ignition switch was in the ON position. The spark plug or plugs must be firing to burn the excess fuel. Spark plugs are two months old. This problem of unable to start usually occurs in the morning but it has occur twice when engine was fully warmed up. Problem occurs about 4 months ago. Ignition coil was replaced about 5 years ago. BTW, once she fires up, all normal. Any advice for me to check. Thanks in advance. Cha