I have the age old "my car won't start" problem, but after reading 101 different threads I'm totally confused on the best way forward.
So, back story. UK spec R reg MR2. Second car, so she doesn't get driven much in the winter (but is stored outside). Weather looked good the other week, and jumped in. Drove to work fine, but coming home we had torrential rain and she got very wet feet for an hour/30 miles of motorway, however ran fine all the way home, no dodgy spluttering or misfires or anything. Couple of days later we hopped in her to go out and cranked away to no avail.
Cranks over fine, smells of petrol, so that side is working. I pulled out a spark plug and sure enough, no spark. I read my error codes (I think correctly) and got code 14, and 22. 22 being temp (she was cold when checking, obviously, so I kinda ignored that one) and 14 being no IGF signal and pointing to ignitor and coil, I jumped to the conclusion on coil pack, and bought a new one, popped it in, and same symptoms. Annoyingly I then dropped the old coil and cracked it too, so didn't want to swap back and she had the new one in now, whether she needs it or not!
I then tried to get a touch more methodical. With ignition on and poking a multimeter around:-
- We have 12v on one wire in the plug that goes on the coil
We have 8-12v on the other wire (slow reacting digital multimeter, so hard to gauge)
We have 12v coming out of the HT lead socket
We have 12v coming out of the other end of the HT lead going into the dizzy.
The dizzy looks clean, dry and tidy, with seemingly no damage.
I tried a set of jump leads between engine and bolts on the body to add improved earthing, incase it was that.
Boot is clean and dry, and ECU is the same, all plugs seem solid
EFI fuse is intact.
So, I am thinking the dizzy is ok, as it was fine on the previous trip, and then died and doesn't even TRY to fire, Coil pack is fine now (and probably was before), I'm thinking its something a bit more electrical and final. (By final I mean it's not a misfire or an intermittent problem, its just not working at all)
I was going to look at the ignitor module next, is this something I can test, or should I just spend £40 on an ebay one and throw it in? Anything else I can test or look at replacing first? I don't want to just go on a rampage and replace everything ignition related though! Alternative is if anyone local (Car in Camberley, I work near Leatherhead every day) could lend me an ignitor to try maybe?
Hope someone can help! Many thanks.