Stroppy solenoids - A busy week

JP6

New Member
Weekend-before-last I was tinkering on the car, it started ok and ran for a while, then I turned her off to do something else and when I came to turn her back on I got a single click and nothing else. All the dashboard lights came up ok, the blowers blew and such, but no ignition. I thought to myself, I know this one, it's the battery. Spoke to my dad who kindly put his spare on charge over night and the following day he popped over. We swapped the battery – click, no joy. We connected jump leads to his car – click, no joy. He tapped my solenoid with the soft end of a Scottish Screwdriver. Vroom... smiles all round. He did say at the time it could last 2 days or 2 years and I was left with a to-do list.

Car ran fine all week, Thursday I got home from work and did a light check before turning off the ignition and going in for the night. Friday morning, going to work, got in the car, turned the key and got nothing. No lights on the dash, no click, not a sausage. Then I see the light switch still sat in the “on” position... D'oh! Put my battery on charge and took the wife's car to work.

Saturday. Put battery in, turned key, click... swore, hit solenoid, car starts ok. Warmed engine up, turned off, turned on, click, swear, hit, vroom... turn off, turn on, click, swear profusely, hit solenoid, car starts... Ok says I, lets not muck about, I've got a spare solenoid in the shed; lets swap them over. Got a few cables off the solenoid fitted to the car before I realised the unit fitted seemed to have different connectors to the one I have in the shed so thought buggrit, put the cables back on and thought to myself as I have the air-filter box off I'd change the filter and do the plugs and points; well, I had the bonnet up anyway and she's due a service so why not? Finished that little lot off, reconnected the battery and just out curiosity turned the ignition key. Vroom first time. Engine runs lovery. Warmed her up, turned her off, turned key, vroom first time. Did it again; vroom. Grinned a bit, fitted old LW/MW radio, turned key, vroom, grinned some more. Took car for a drive along Lincolnshire's sun-lit leafy lanes, windows down, listening to Radio Nottingham playing the story of “Band on the Run” (1974's biggest selling album, appropriate enough for my 1974 P6)... bliss. Got home, turned car off, turned car on again, vroom vroom, grinned a bit more.

Monday, sun is still shinning, car started first time no probs and drove to work grinning again.

I'm at a loss to explain why the solenoid wouldn't work without being tapped prior to my tinkering but seems to work fine after... and is the solenoid for a manual transmission different from that on an automatic? Could that be why the connectors are different?
 
My car (its an auto) did something similar when I first get her. So when I jacker her up to take the starter off I found it was loose! Something I did not notice when I hit it with the hammer to make it work when it failed. Tightening it up fixed it. Not 100% sure why it would been a problem. It was also making a "I'm about to die" noise. which vanished when it was properly secure. Jump under the car and have a quick look to see its not loose. Failing that I would say you have no choice but to strip it and clean. (yer, I know, it can be a pain ;) )

Not sure why mine was loose but having a flex plate go after two years (got paper work to say when it was fitted) and when pulling the engine out finding the bolts in the wrong holes and a couple loose, so as Harvey says, its very important on these cars to fit the box correctly. I'm about to do an oil change on mine, just past her 1st 1000 mile mark. Going to check all the bolts at the same time.

(can't tell from post if yours is a 4 pot or v8)
 
Richard,
Biscuit is a 2200SC Auto. A few weeks back I took the old 3-pot engine out (it was leaking oil from almost every orifice and one cylinder joined in when it felt like it – well, it had done about 120k miles) and popped in a 63k mile oil-tight engine from my donor car (a 2200SC manual). We did strip the starters off during the swap and I believe we bolted it back on properly but I will slide under the old girl and double-check she's buttoned up tight.
 
Could be that the "tapping" was just establishing a better connection on those solenoid wires. When you removed them, and then put them back you cleaned and tightened those connections.

Dick West
 
First, let me say that kids who break glass bottles in car parks should have their ears nailed to their knee-caps... Second, Biscuit checked out ok last night, and speaking to the old man he echoed what you said Dick, guess there's a lot to be said for occasionally checking these things– cheers.
 
JP6 said:
Richard,
Biscuit is a 2200SC Auto. A few weeks back I took the old 3-pot engine out (it was leaking oil from almost every orifice and one cylinder joined in when it felt like it – well, it had done about 120k miles) and popped in a 63k mile oil-tight engine from my donor car (a 2200SC manual). We did strip the starters off during the swap and I believe we bolted it back on properly but I will slide under the old girl and double-check she's buttoned up tight.
Ah that's right, I remember now. :D My next suggestion was going to be what Dick said, guess he beat me to it. On mine when the engine went back in I replaced the wiring going from the alternator to the starter as they had gone all stiff and horrid. Also replaced the earth lead and added an extra one from the Alternator to the body to be 100% sure. Don't know about yours but I suspect mine maybe due for a rewire in the engine bay at least. The wire to the horns I just replaced were not as good as they could have been. They are all stiff and have the white power around the connectors. The ones inside the car to the back look fine.

120k for a p6 engine is very good. The manual does say 100k for a bottom end is doable, but have to replace the big ends every 40k, not a big job I don't think. I do wonder if I had done mine when I got the car if the engine would still be running. Although it did have 10thou ware on the bores!
 
Back
Top