Oil Pressure Sensor Light and engine shake, rpms bounce

[tyealia]

So a couple of months ago my oil pressure sensor light came on (only at idle when the car is under 1000rpms, if it goes over the light dissapears, then when I slow down it comes back), so I went straight in to the mechanic for an oil change. He changed the oil but the fault wouldent dissapear.

Went to electrician and they couldent make it dissapear.

Mechanic took apart my car and told me the fuel pump was bad, so I dished out to replace the entire fuel pump. Still fault didnt go away. Mechanic said maybe its the sensor or some valve.

Now today, engine begins to shake very hard while idle, less when I drive and I hear a popping like sound I think from the back exhaust. Also I may be paranoid but I may smell fuel.

Final symptom the rpm gauge at idle is going up and down slightly at 1000.

Lots of problems now I know -_- any ideas?

[Capncol]

So a couple of months ago my oil pressure sensor light came on (only at idle when the car is under 1000rpms, if it goes over the light dissapears, then when I slow down it comes back), so I went straight in to the mechanic for an oil change. He changed the oil but the fault wouldent dissapear.

Went to electrician and they couldent make it dissapear.

Mechanic took apart my car and told me the fuel pump was bad, so I dished out to replace the entire fuel pump. Still fault didnt go away. Mechanic said maybe its the sensor or some valve.Are you sure it was the fuel pump that was changed as that has nothing to do with oil pressure

Now today, engine begins to shake very hard while idle, less when I drive and I hear a popping like sound I think from the back exhaust. Also I may be paranoid but I may smell fuel.That sounds like a misfire. Have you got a warning light on?

Final symptom the rpm gauge at idle is going up and down slightly at 1000.Possibly to do with misfire

Lots of problems now I know -_- any ideas?

Please read the bit in red at the bottom of all my posts, as that give us a better idea of what we are looking at. I can't even tell if it's petrol or diesel from your posting

[tyealia]

HI Capncol, Sorry for the confusion.

I have a 1.6ltr petrol 206cc (2005)

Recent work done - replaced fuel pump to try and fix oil pressure light (no effect)
Replaced one of the motor supports

So a couple of months ago my oil pressure sensor light came on (only at idle when the car is under 1000rpms, if it goes over the light dissapears, then when I slow down it comes back), so I went straight in to the mechanic for an oil change. He changed the oil but the fault wouldent dissapear.

Went to electrician and they couldent make it dissapear.

Mechanic took apart my car and told me the fuel pump was bad, so I dished out to replace the entire fuel pump. Still fault didnt go away. Mechanic said maybe its the sensor or some valve.Are you sure it was the fuel pump that was changed as that has nothing to do with oil pressure

Now today, engine begins to shake very hard while idle, less when I drive and I hear a popping like sound I think from the back exhaust. Also I may be paranoid but I may smell fuel.That sounds like a misfire. Have you got a warning light on?

Final symptom the rpm gauge at idle is going up and down slightly at 1000.Possibly to do with misfire

Lots of problems now I know -_- any ideas?

Please read the bit in red at the bottom of all my posts, as that give us a better idea of what we are looking at. I can't even tell if it's petrol or diesel from your posting

[GrandadMonkey]

As Capncol has indicated, replacing the fuel pump would make no difference whatsoever to the oil pressure.

Low oil pressure on these cars is often down to the use of non-genuine oil filter elements. Pattern parts have been known to collapse and cause low oil pressure. The cure for that is to replace the oil filter with the correct genuine Peugeot part.

See the following thread:
http://www.peugeot206cc.co.uk/viewtopic ... 23&t=11889

[Capncol]

I'm guessing it had a new filter along with the oil change although OP hasn't said so.

Still waiting for ........
Mileage? (is engine worn out)
Warning light? (confirmation of misfire)

If I was doing the work, I would verify the oil pressure with a pressure gauge to see if it was low pressure or a fault in the pressure sensor before I even thought about changing anything.
If your mech really did change fuel pump and not oil pump, I would be looking for someone else to do the work

[tyealia]

The Mileage of the car is 115,000 km's however the engine died at about 70k do to the car being driven under a lot of water one night with previous owner and it was replaced with a new engine.

Warning light is there, it gives the low oil pressure warning, oxygen sensor fault and seatbelt warning.

I decided to take it to another mechanic/electrician. They think the rpm problem may be do to the throttle body/tps sensor. They have been trying to get a hold of one for a few days to test before they replace it. As im in Mexico its harder to find these parts.

*Part that had been replaced is the OIL pump not fuel pump, my mistake.

If you want to see the full car history I had a post here trying to restore it.
http://www.peugeot206cc.co.uk/viewtopic.php?f=1&t=14762

Ill keep this updated if we find one or what the mechanic does to fix it incase anyone else runs into this issue in the future.

[Capncol]

Oxygen sensor warning? Do you mean anti pollution fault? If so, look for a misfire not the throttle body.
Can you get fault codes read before you commit more money?

[tyealia]

It was not the throttle body, they got one in and it didnt fix the problem, luckily they did not make me pay for the part. The found out the the two Oxygen sensors in spanish its "sensor de oxygeno" so maybe those are the two pollution sensors? were done, they switched them out with two new ones and now the rpm issue is gone and the car drives about 30 degrees cooler. However the oil pressure warning is still there, they said i would have to go to mechanic for that one, they said in their opinion it may be the oil bulb.

but the two oxygen sensors did the trick and it drives great except for the oil pressure low warning which i will go to a mechanic for.

total cost

3000 pesos for 2 new sensors
1000 pesos for labor
----------
4000 pesos aka about 325 dollars not too bad considering they had it for 3 weeks being diagnosed and taken apart

[leegsi]

Get a garage to do an oil pressure test.

That way if the pressure is good you know its a sensor or wiring fault.

[tyealia]

FIXED UPDATE: Another update incase anyone has the same oil pressure fault. My mechanic took apart the whole car and went through piece by piece. His pressure test determined there was in fact low pressure at idle (I fired the other mechanic). He got to a point in one of the pipes where pressure was low, he installed something to tighten the piple a bit more thus increasing the pressure and eliminating the fault!

[Capncol]

Don't you just love "poke & hope" mechanics? If your original mech had checked with a pressure gauge (as suggested) it would have saved a lot of time and expense. Sounds like your new mech found a fault in the oil pressure relief valve and possibly added a shim to increase pressure?

[mo7amed3arafa]

I once had the same problem, changing the oil filter had the job done.

[GrandadMonkey]

Please remove the Unauthorised hotlink in your signature savionferguson and confirm that you have done so within 24 hours.
Moderator

[rhume]

Always seems a bit strange when someone replies to a post that is 4yrs old

[GrandadMonkey]

savionferguson did not respond and has been banned. Unauthorised hotlink has been deleted by moderators.