|
|
|
Jun 25, 2011 14:52:17 GMT
|
|
Need some help. My car is a carb, but the wiring loom was from a EFI engine, and there were some dodgey connections as well. So I removed it and fixed all the bad connections, removed all the access wires / connectors and put them in a box just in case.
When I re fitted it, everything was fine. Now how ever the oil level light has started staying on. I have checked the oil level as well.
The weird thing is I have found the oil level senosr where it screws into the engine just next to the oil filter. BUT, there was never a wire /lead connecting it. I have checked in my box of removed bits and there isn't anything that will even fit or reach onto the sensor.
I have tried to google for an image. But no such luck. Maybe someone else will have better luck. Can't work out why is wasn't lightening up beofore I removed the loom,or re fitted it. But suddenly now it does.
|
| |
Last Edit: Jul 1, 2011 20:02:35 GMT by br1gg5y
|
|
|
|
bl1300
Posted a lot
Posts: 1,678
|
|
Jun 25, 2011 15:04:41 GMT
|
|
Did this problem occur straight after the loom swap or has their been a delay and how long?
Are you sure that the light signifies low oil level rather than pressure?
|
| |
Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
|
|
|
|
|
Jun 25, 2011 15:14:05 GMT
|
|
to be honest not sure if oil level or pressure. There has been a delay of a month or more before the problem occurred. In that month the car was run up a few times to check exhaust fitment. Radiator fan cutting in correctly. Temp guage working, etc.
it went to the half mile to the mot station fine. Then on the way back the light came on.
|
| |
|
|
|
|
|
Jun 25, 2011 15:48:03 GMT
|
|
according to haynes manual it is the oil pressure switch in the engine chapter. But the circuit diagram refers to low oil sender
|
| |
|
|
bl1300
Posted a lot
Posts: 1,678
|
|
Jun 25, 2011 18:19:48 GMT
|
|
Does the engine sound right, you'd be able to hear it if the pressure or level was low enough to put the light on.
|
| |
Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
|
|
|
|
|
Jun 25, 2011 19:13:20 GMT
|
Does the engine sound right, you'd be able to hear it if the pressure or level was low enough to put the light on. Are you really sure? |
| |
|
|
bl1300
Posted a lot
Posts: 1,678
|
|
Jun 25, 2011 19:26:33 GMT
|
Does the engine sound right, you'd be able to hear it if the pressure or level was low enough to put the light on. Are you really sure? Most cars oil pressure lights come on at barely above the minimum required to maintain film pressure in the bearings. My triumph 1300 for instance light comes on at 10psi and minimum film pressure is 7psi so it would be wise to test your oil pressure as its on anyway. Low oil pressure is a pretty fool proof way of destroying an engine. |
| |
Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
|
|
Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,790
Club RR Member Number: 34
|
|
Jun 25, 2011 19:31:14 GMT
|
doesnt an oil pressure sender work whereby it lights until the switch throws(under oil pressure) to break the circuit and turn it off? so, theoretically, you could have an errant wire in your loom, that is connected to the light, but was just hanging loose somewhere and was therefore off, that has now become earthed somewhere along its length, thus turning the light on? I'm not sure if thats entirely how your car is wired, but ive had similar happen to me in the past. if theres oil in it, id be looking for an electrical problem rather than anything else. especially as youve already said the sender wasnt even connected  |
| |
Last Edit: Jun 25, 2011 19:37:58 GMT by Dez
|
|
bl1300
Posted a lot
Posts: 1,678
|
|
Jun 25, 2011 19:36:00 GMT
|
|
Dez yep thats pretty much how it works I even have a story that backs that up
Driving in my DAF had the oil light start flickering on and off. Stopped the car and discovered the spade connector had come off the sender and was intermitently earthing to the block causing the light to come on.
|
| |
Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
|
|
|
|
|
Jun 25, 2011 20:08:48 GMT
|
Just to clarify then  The switch on the block near the oil fiter is the oil pressure sender. Some CVH engines do have a level sensor too, but it's built into the dipstick. The oil pressure light looks like an oil can, is red and on the dashboard between left indicator and high beam warning lights. The level warning (if fitted) is yellow, and has a picture of a sump with a dipstick in it, it is usually found in the centre console. I would agree with paul about being able to hear the difference between an engine with no oil pressure and one with a faulty sender or other wiring fault, especially if the engine continued to run for longer than a minute like that! |
| |
To get a standard A40 this low, you'd have to dig a hole to put it in |
|
|
|
murran
Part of things
Posts: 610
|
|
Jun 25, 2011 20:23:00 GMT
|
|
that really bad advice tbh..... i wouldnt say to anyone; you can run an engine you suspect has no oil pressure to listen if the bottom end is knocking as a way of confirming if its an electrical fault or or actual low pressure. that a little retarded!
don't run it again til youve borrowed/bought an oil pressure guage!
remove pressure sender, screw in guage and start it up. you should see upwards of 40psi when cold and no less than 15 when hot. and a brief burst of throtlle should see it shoot up atleast 20-30psi higher than idle.
only then can you say its an electrical fault.
|
| |
|
|
|
|
|
Jun 25, 2011 20:37:47 GMT
|
|
I see where you are coming from, I'm not suggesting the "wait for it to blow up" method of diagnosis, it's just that there isn't even a wire on the pressure sensor and the OP has been running the car, and it hasn't siezed. I'm guessing dez's theory of a loose wire finding an earth is probably correct.
|
| |
To get a standard A40 this low, you'd have to dig a hole to put it in |
|
|
|
|
Jun 25, 2011 20:38:29 GMT
|
|
Seems like perfectly reasonable advice to me TBH, all fingers point to an electrical problem and he's been running it up and taking it to the MOT shop without the engine expiring, if it really had rag all oil pressure he would know all about it by now.
|
| |
1974 Lancia Beta Saloon
1975 Mazda 929 Coupé
1986 Mazda 929 Wagon
1979 Mazda 929 Hardtop
1982 Fiat Argenta 2.0 iniezione elettronica
1977 Toyota Carina TA14
1989 Subaru 1800 Wagon
1982 Hyundai Pony 1200TL 2-dr
1985 Hyundai Pony 1200 GL
1986 Maserati 425 Biturbo
1992 Rover 214 SEi 5-dr
2000 Rover 45 V6 Club
1994 Peugeot 205 'Junior' Diesel
1988 Volvo 760 Turbodiesel Saloon
1992 Talbot Express Autosleeper Rambler
2003 Renault Laguna SPEARS OR REAPERS
|
|
|
|
|
Jun 25, 2011 20:44:36 GMT
|
|
^ yeah, the thread would be titled "CVH engine goes knock knock BANG! and won't turn over any more" or "I found this conrod on the drive, is it important"
psst - 4,999 posts each....
|
| |
To get a standard A40 this low, you'd have to dig a hole to put it in |
|
murran
Part of things
Posts: 610
|
|
Jun 25, 2011 20:56:30 GMT
|
|
don't be so sure how long an engine will last with out oil pressure, I drove an 1100 mk1 golf from handsworth to totley (sheffield), a distance of about 10 miles before now..... with the oil light on below 2500 rpm, in the last 2 miles the light was on all the time but only in the last mile could you tell/hear the knocking/feel the harshness and lack of power.... in fact it sounded like hell, flat out in second up past totley rise. was funny!!! (engine was coming out anyway. oil was full of petrol from the split fuel lift pump on the cyl head. )
its just not good advice to run an engine with the oil light on until you know 100% that it actually has oil pressure. always check it with a guage, its good practice.
|
| |
Last Edit: Jun 25, 2011 21:04:03 GMT by murran
|
|
|
|
|
Jun 25, 2011 21:12:56 GMT
|
|
meh. Ford CVH + no oil pressure = gone in 60 seconds. Timing belt FAIL the second the cam bearings get hot.
|
| |
To get a standard A40 this low, you'd have to dig a hole to put it in |
|
murran
Part of things
Posts: 610
|
|
Jun 25, 2011 21:23:37 GMT
|
|
ive seen that on audi tt's a couple of times. due to lack of oil pressure exhaust cam seizing in the head stripping the cambelt of its teeth around the crank pulley and clattering to a halt.
|
| |
|
|
|
|
|
Jun 25, 2011 21:27:16 GMT
|
yup, CVH can do that to you if you don't change the oil and filter often enough. Actual no oil pressure will kill one in seconds, believe me |
| |
To get a standard A40 this low, you'd have to dig a hole to put it in |
|
|
|
|
Jun 25, 2011 21:29:19 GMT
|
I used to have a 1.6 CVH Escort Mk3 that would randomly lose oil pressure. The instant the oil pressure light came on the tappets started creating a hell of a racket, so it was quite evident that there was no oil pressure! ;D I'd stop as soon as it happened and on restart it'd be fine. I never got to the bottom of it as the car went up in flames before I solved it. Also, Pauldaf44 / automatic / Classic Tech / ctdc now seems to be masquerading as bl1300, the 57 year old garage mechanic.  |
| |
Last Edit: Jun 25, 2011 21:31:33 GMT by BenzBoy
|
|
|
|
|
Jun 25, 2011 21:36:03 GMT
|
Are you sure? Maybe it's someone else with a FWD Triumph 1300 and some Dafs.. It's like Retro-Rides got its very own Chris Watson (google search through honestjohn.co.uk if you don't know what I mean) |
| |
To get a standard A40 this low, you'd have to dig a hole to put it in |
|
|
|
[*]
[*]
