Afternoon all! Hoping the lovely clever folk of VZi-land can help me with a problem that has left me scratching my head
Yes I know I could post this in the manufacturers specific forum but I'd rather not necessarily be part of that crowd and hopefully it is not a model specific problem.
So the story is my mum has owned a MK1 '93 Ford Mondeo from almost new, I think her father purchased it for her as a birthday present in '95 but that is mostly irrelevant, save for the fact it is part of the family and has a lot of sentimental value with my grandad no longer being here. In it's lifetime my dad and I have spent many hours working on it, keeping it on the road every year with a couple hundred £££ spent each year on MOT parts etc - it eats lower ball joints, water pumps and outer CV's, problem with aftermarket parts. In fact it is pretty much were I cut my teeth working on cars and brought my dad and I closer together.
Fast forward to last year, engine is on 131k miles and the HG fails. Head stripped off and get it sent for a skim, once returned a refitted she must have done about 30miles before we got the same problem, I thought surely it isn't the HG again...wrong, it WAS the HG. Contacted the garage and they said they couldn't take any more material off because of how bad it was, they must not have pressure checked it
so we were left with 2 options; scrap it, or save it. With the aforementioned history we opted to fine a running donor and do an engine swap, MK1 2.0 Mondeos are hard to come by these days. We found one over in Oxford, towed it back as a pre-caution and not technically legal but got it on the road once back and used it so we knew it was a good engine. Obviously we had the whole pandemic and social distancing/shops closed fiasco and I was still working we didn't get around to doing the swap however I did this, along with my dad's help a few weeks ago. I took it for a test drive and apart from having to adjust the gear shift it seemed ok. Donor engine has 91k miles
Then the problems started...running lumpy and misfiring "kangarooing" is the term I believe my mum liked to use
, I put this down to bad fuel, as it had been sat for 10 months or so, especially as the plugs, leads and coil were all fine from before. It had just over 1/4 tank but put some redex in and some of BPs finiest E5 but that didn't cure the problem, in fact it seemingly got worse. The car wouldn't start after this and eventually through swapping leads and other things, pouring some fuel into cyl 1 it fired into life, I limped it home with the same lumpy problems, having stalled a couple of times but managed to start.
The next big problem is she is burning oil - I've put this down currently to my brother putting too much in when he serviced it, I drained 1.5ltr out last night. With the problem not seemingly fixed by some fresh (mixed) fuel I bought all new plugs, leads and coil pack, fitted them last night and it hasn't solved the lumpy, stalling problem. I had to leave the car parked 2 roads over as I couldn't get it started, and when I finally did as soon as I tried to move, ie under load, she'd want to stall. It is fine on idle, but stalls whenever you put it in gear and move - I couldn't even move 1ft forward, had to roll it back into a vacant space!
So next on the list is the crank and/or cam sensor. I am reluctant to assume it is fuel related as it idles ok and the problem gets worse as it gets warm. I will check the fuel pumps and the filter - the filter was replaced last year but it was clean even after 26 years of use. I'm beginning to lose hope as I'm running out of ideas. The vac pipes all seem ok, albeit I think 1 might be in the wrong place as the donor had 1 purge valve attached to the pipes, whereas originally there were 2 so I reconnected a pipe possibly incorrectly.
TD:LR Man wants to save mum's classic beloved Mondeo which has a stalling problem.
I'm hoping the good people here can offer some useful advice, even if it is something I might have overlooked, happy to be called an idiot for something simple!