If I use the keyfob to lock the car, both rear doors lock properly, but not the front doors. If I lock on the key, the drivers door will lock and on unlocking on the key, most times it will unlock both the drivers door and the two rear doors. The front passenger door will sometimes unlock with...

Have found what the problem was while re-checking the sensor inputs on the ECU. The throttle position sensor was consistently outputting 4.7V no matter what position. Have disconnected the multiplug on the sensor and vehicle now starts everytime. New part ordered and will be fitted when...

Have checked what you suggest and all seems ok. Chris.

When in the problem state, the fuel pump relay is fine, as the fuel rails are pressurised correctly and the pump is operating without any problem. The problem is that the ECU isn't telling the injectors to open. When I scope the output for the injectors there is no signal shown. Regards, Chris.

Checked contacts and output fine. Regards, Chris.

I had checked the contacts a while ago, but never actually checked the output of the MAF Sensor. I will give it another check and check the output too. Let you know what the outcome is. Chris.

Still having starting problems with my 1998 GEMS V8 which has been LPG converted. Have a problem where you turn the key to start and either starts without any problem, or will just turn the engine and never fire. If you then turn the key to off, wait 15 seconds and re try it will generally...

Just to add, it has the same problem starting from cold, or restarting 1 minute after turning off. Regards, Chris.

Thanks for the clarification, I didn't think there was such a device. I can only say for certain the problem occurs on starting with petrol. I tried a sequence I was given to switch the gas system to enable starting directly on the gas, but I was not convinced the sequence switched it to start...

Hi all, I have a 1998 4.0 litre SE manual transmission P38 which I have had LPG converted with a multipoint sequential injection system. It has been running fine for 18 months but has recently had starting problem. You turn on the ignition and try to start, it may start perfectly, or it may...