Remembering why I
dislike working on
AO Silver Member
Join Date: Sep 2001
Re: Non starter 155
Could be so many things really - you are going to have to be methodical. Start with electrical connections as has been suggested. Given the initial problem was basic electrical, this might be a good place to start. Double-check all those relays & fuses on the bulkhead. The terminals in the relay & fuseholder housings can sometimes get badly corroded or push back inside giving poor/no contact. Change the fuses on spec anyway, unless you can clearly see they are good.
Carefully check the AMP connectors on the coil pack, the ECU engine water temp sender, the throttle pot, the air flow meter, the crank position sensor. Again, the pins inside these connectors can become corroded if the seals are lost or the boots get abused, or push back inside, sometimes not obviously too, so be thorough.
Could be sticky injector even, depending on how long it's been sitting for. Only real way to test these is to take them out and have them cleaned/checked, but that's going to cost you a few quid. You can do a quick & dirty (if slightly dodgy) check by doing the following; remove fuel rail with all injectors, connectors and fuel pipes attached from the motor, crank it over and see what happens! You should see squirts of fuel from each injector that start and stop cleanly. You shouldn't see any sign of fuel dribbling or spraying from them unless the motor is cranking.
Fuel pump should kick in momentarily when you turn on the ignition to prime the fuel system, then when cranking (and running normally) the pump runs constantly to provide consistent pressure in the rail. In case you aren't aware, there should be about 47psi of pressure in the fuel rail at all times, even a long time after the engine is switched off, so be careful!
Obviously, this trick will spray a fine mist of petrol everywhere if all is well, so be carefull where you point it! I'd aim it up and away from the engine myself. Make sure you remove the coil pack multi-way connector before you try this so you don't get any HT sparks anywhere. Can't prevent sparks in the starter but you should be OK.
Good luck. Hope you find the problem without too much hassle.
One last thing - you can find out what the ECU thinks is wrong by doing the following;
Sit in car. Switch ignition on (but don't try cranking) and quickly pump the throttle pedal hard to the floor 5 times. If you get the timing right, the engine trouble light should blink, pause, then it gives a sequence of flashes. The codes are in 4 groups. No error stored is 4 4 4 4, the rest of the codes you'll find in a sticky at the top of this forum.