Vauxhaul corsa D 2008my 1.4 z14xep unstable idle and switching off

[bonecrusher]

Hello

I am working on this Corsa D 1.4 with Z14XEP engine. The problem is the vehicle has an unstable idle and switches off when coming to a stop.I have attached the fault codes and live values from OPCOM. I have 5 fault codes. I can clear them. I have viewed the map sensor actual values and it seems to be operating correctly. The oxygen sensor voltage seems to be rich all the time please view the attached logs.




Identifier: 0x0A35
VIN: W0L0SDL6884268395
Hardware number:61208941
Motor type: Z14XEP
Part Number:55557934
Software version number: 42070501
Hardware manufacturer number: 0261208941
Programming Date: 20080109
Hardware key number: 19NX7669
System description: BOSCH0100
Type approval number: B07003
Variant programming : 0x20202020202020202020202020202020
Alpha code: AY
Manufacturing date: 20080109
Hardware manufacturer system name: ME7.6.2
Code Index and version: 1037381911


Total number of fault codes: 5

P0172 - Fuel Trim Malfunction (Bank 1)
(00) - Not present

P1138 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
(00) - Not present

P0068 - Manifold Absolute Pressure Sensor Circuit Range/Performance
(00) - Not present

P0131 - O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
(00) - Not present

P0134 - O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1)
(00) - Not present

[bonecrusher]

another thing, in live values under manifold pressure ,the voltage fluctuates when the accelerator is depressed but the kPA value stays at 101kPA seems rather strange

[Meat-Head]

Right, might be wrong, but worth a look, assuming you use rain in your country?

Lift up the under hood fuse box, look and unbolt the multiplugs, see if rotten as a peach, ?40 + VAT Inglish pounds 1 foot of loom from ECU to fusebox

[bonecrusher]

will check and report tomorrow

[flyins]

open up oil filler cap while engine running and see if its hard to take off as if of vacum, if it is you need to clean rocker cover breather or replace, this fault causes symptoms like yours

[Meat-Head]

open up oil filler cap while engine running and see if its hard to take off as if of vacum, if it is you need to clean rocker cover breather or replace, this fault causes symptoms like yours

Not going to argue, but the same rumor is a bit longer, also states the oil pressure switch starts leaking, due to excess pressure, again something to do with the breathers, but somehow rumor got mixed up.

[bonecrusher]

Meaty,
Once again you are 100% correct, rotten as a peach.

[Meat-Head]

5 or 6 plugs on the loom, what was the cost of part?

I didn't get where i am today by fixing other peoples cars from thousands of miles away.

[bonecrusher]

About 120 quid in my part of the world. If cust approves repair three days for loom to get to me. Just out of curiosity how much will you charge out for a job like this

[Meat-Head]

Just out of curiosity how much will you charge out for a job like this

Well the one and only one of these we at at M-H-M on face value was 100% ECU - but we make it clear we needed to check the wirng to be 100%

It went to a member of an INFERIOR forum, who diagnosed the loom

We charged i think 1 hour labour

Next one i guess as know about it 1 or 2 hours labour + parts + VAT

When you say "?" thought you was with Toto in Africa?

Whereevr you are you must use rain like we do otherwise wount have been rotten

[easytech]

I had an Astra 1.4 2 weeks ago same issue leaking oil pressure sensor. Stealers would charge 2700euro to cust for new loom, ecu, oil sensor, 2 lambda sensors.
I put new loom on it (560euro over here) ,oil pressure sensor, 2 aftermarket bosch lambda sensors and clean the ecu.
With labor almost 1000euro.

[Meat-Head]

easytech what was the problen, did it really need all that work?

[super jumbe]

In your report you have fault code manifold absolute pressure sensor its worth checking that your EGR valve if it stays slightly open the engine will not idle.

[easytech]

Manifold pressure sensor is also a possibility indeed.
In my case the loom was completely soaked with oil and of course the oil goes to the lowest points, lambda's and the ecu.
I took the old loom apart strange enough the oil is not under the isolation tape and wire but in the wires itself so only thing left is to replace the loom.
The lambda wire's are also soaked and so is the iridium or platinum piece inside not working anymore.
Same shit happens with Peugeot or Citro?n with the watertemp sensor but then with coolant of course, loom, ecu and most of the connectors are gone.

[ersin]

hi
z14xep corsa d 55557934
carprog
eprom I need it