Vectra 2006 Diesel 1.9 CDTI - Randomly Stalling

[Plook32]

Hi folks - I've had a Vectra 2006 Diesel 1.9 CDTI since October last year which gave me no bother until a couple of months ago when I was driving back from a drive which was about 20 miles, on the way back the car started completely stalling in the middle of the road, If i turned the ignition on again I could get it going again and again but it eventually completely gave up a couple of miles on and I had to park up in a street. I was incredibly busy at that time and had to leave it there for a few days, I came back to test the car and low and behold it started and hasn't gave me any bother again until the weekend passed. I did a 40 mile drive all good, but the next morning going to the shop the stalling happened in the exact same pattern and I have to leave it there for an hour or so but after that the car was fine. I drove home the next day around 35 miles and then the car did the same thing, same pattern, I left it for another 30 minutes and then It let me drive another 10 miles home. There seems to be no triggers - does anyone have any ideas? My car knowledge is limited and I'm a student so so is my funds. I have ODIN and will post the error codes in the post below. Thank you.

[Plook32]

DIAGNOSTIC REPORT:
OP-COM 100219a


hkj


**********************ECU ID STARTS**********************
Source Address: CIM
Source Address: 0x00000245
Identifier: 0x0014
Part Number:13204147
Software version number: 12244872_
System description: DELPH0400
Hardware key number: *78HLT7
Alpha code:
Manufacturing date: 060816
Code Index and version: 008 02


Number of stored fault codes: 2


B3794 - Switch Cruise Control Circuit Malfunction
(08) - Not present


U2105 - CAN-Bus No Communication with ECM (Engine Control Module)
(00) - Not present


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: ECM
Source Address: 0x000007E0
Identifier: 0x0750
System name: Z19DT
VIN: W0L0ZCF6871012883
Hardware number:81013408
Part Number:55205633
Software version number: WJLMS090_S
Hardware manufacturer number: 0281013408
System description: 1037A50357P319_O90
System description: BOSCH0100
Type approval number: B06004
Hardware key number: O000027435
Programming Date: 20090629
System description: 0x00006088
Alpha code: ET
Software version: O90JTD75
ECU variant coding: 0x00003980


Number of stored fault codes: 2


P0704 - <Unknown DTC>
(58) - Not present


P1625 - Main Relay opens too early
(58) - Not present


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: ABS/TC/ESP
Source Address: 0x00000243
Identifier: 0x6003
System name: ABS 430 NG
Hardware number:0
Part Number:12773671
Software version number: 00C2E92D
Hardware key number:
Alpha code: BS
ECU variant coding: 0x00001514


Number of stored fault codes: 1


U2105 - <Unknown DTC>
(00) - Not present


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: EHPS
Source Address: 0x00000244
Identifier: 0x0104
System name: EHPS GEN3 TRW
Hardware number:24444336
Part Number:0
Software version number: V21_
System description: TRW 0300
Alpha code:
Code Index and version: 009 03
ECU variant coding: 0x00000000


Number of stored fault codes: 2


U2105 - CAN-Bus no Communication with ECM (Engine Control Module)
(00) - Not present


U2105 - CAN-Bus ECM Message Range/Performance
(71) - Not present


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: IPC
Source Address: 0x00000255
Identifier: 0x1203
VIN: W0L0ZCF6871012883
Part Number:13193088
Software version number: 3.40 10/05
System description: VDO 0400
Hardware key number: 0000000000
Alpha code: PF
Manufacturing date: 060829
Code Index and version: 004 05


Number of stored fault codes: 1


U2105 - CAN-Bus No Communication with ECM (Engine Control Module)
(7F) - Not present


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: AIRBAG SDM
Source Address: 0x00000257
Identifier: 0x0102
VIN: W0L0ZCF6871012883
Part Number:13186947
Software version number: 0C0D4B11
Alpha code: KN


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: BCM
Source Address: 0x00000252
Identifier: 0x0209
VIN: W0L0ZCF6871012883
Part Number:13193590
Software version number: D02D11 49041605
System description: TEMIC04
Hardware key number: ÿÿÿÿÿÿÿÿÿÿ
System description: 0x20202020202020303031353330383632
Alpha code: NF
Manufacturing date: 000600080200
Code Index and version:


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: REC
Source Address: 0x00000254
Identifier: 0x0105
VIN: W0L0ZCF6871012883
System name: REC
Part Number:13205774
Software version number: 00000FA1
System description: LEAR 0400
Hardware key number: ÿÿÿÿÿÿÿÿÿÿ
Alpha code: FP


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: UEC
Source Address: 0x00000253
Identifier: 0x0105
VIN: W0L0ZCF6871012883
System name: UEC
Part Number:13240247
Software version number: 00000FA1
System description: LEAR 0400
Alpha code: JJ


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: DDM
Source Address: 0x00000259
Identifier: 0x0106
VIN: W0L0ZCF6871012883
Part Number:13193368
Software version number: OP1D 193000
System description: SIEM 0401
Hardware key number: XXXXXXXXXX
Alpha code: JQ
Manufacturing date: 618060
Code Index and version:


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: PDM
Source Address: 0x00000258
Identifier: 0x0105
VIN: W0L0ZCF6871012883
Part Number:13193369
Software version number: OP1D 192000
System description: SIEM 0401
Hardware key number: XXXXXXXXXX
Alpha code: JR
Manufacturing date: 808060
Code Index and version:


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: EHU
Source Address: 0x00000241
Identifier: 0x0504
System name: CDC 40 OPERA
Hardware number:13188432
Part Number:13188475
Software version number: 09.05/-----
System description: BOSCH0400
Alpha code: LN
Manufacturing date: 20060825
Code Index and version: 023 01
Audio Index and version: 043 03


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: DIS
Source Address: 0x00000246
Identifier: 0x1201
VIN: W0L0ZCF6871012883
System name: CID/GID Epsilon
Hardware number:13128260
Part Number:24461295
Software version number: GE59-/00050
System description: SIEM 0400
Alpha code: DD
Code Index and version: 010 01


No fault codes stored.


**********************ECU ID ENDS**********************


**********************ECU ID STARTS**********************
Source Address: EHS
Source Address: 0x0000024D
Identifier: 0x0101
System name: DAB 45
Hardware number:13111066
Part Number:13111066
Software version number: 01.33/rel60
System description: BOSCH0400
Alpha code:
Manufacturing date: 20060818
Code Index and version: 001 01


No fault codes stored.


**********************ECU ID ENDS**********************

[northpole]

did you actually lookup the fault codes you've found? anyway if i was you i would be looking into cleaning the UEC and the cable on top of the ABS... once you've done that and erased the codes you'll have to go for a drive to see if it is sorted. PS you can change that main relay to make sure it is working right but they aren't cheap so try to clean the contact points on it first.

[Plook32]

did you actually lookup the fault codes you've found? anyway if i was you i would be looking into cleaning the UEC and the cable on top of the ABS... once you've done that and erased the codes you'll have to go for a drive to see if it is sorted. PS you can change that main relay to make sure it is working right but they aren't cheap so try to clean the contact points on it first.

Thanks for the advice. Tried everything you said then cleared the codes and took it for a drive. All was good for about 5 miles, but after that on the way home it started all over again. Got very lucky that I was near my house and was able to keep restarting it to get round the corner. But it's now completely done - won't even start at all. From doing a lot of digging online a common problem seems to be "a faulty anti-shudder valve on the inlet manifold, which was closing and starving off the ignition and restarting the engine" with the suggestion to check for faulty flaps in the valve. This seems to have solved it for a few people with the same symptoms as me so will try that next once I get my head around how to actually do it.

[northpole]

It isn't that hard to remove the valve body on your engine... 9 out of 10 times it is caused by dirt and sometimes the valve movement is restricted because the gears are covered in oil causing a short so it closes during driving.. so you'll need to open that black plastic casing that is connected to it.


Ps when it closes the engine doesn't get air so that is why it doesn't want to start. A good dosage of electrical cleaner or brake cleaner will help cleaning the oil out

[Plook32]

Opened up the valve and it was caked it oil. Gave it a good cleaning and checked it was able to move. Still no joy. Car wont start at all, just clicking noise and ABS/Battery/Airbag light, though all other electrics are working. Tried a different battery, no joy still same issue. Could it be the starter motor? Thank again for your help.

[northpole]

If you mean clicking noise when you turn the key... well than it must be the starter...

[Plook32]

Got an auto spark out - he did a diagnosis and found that the starter and battery were fine. The issue is that the fusebox isn't getting power to the ECU so the problem is likely either a faulty fusebox or ECU. He set up a power line from the battery to the ECU - that got the engine ticking over now, but the accelerator doesn't rev at all. Fault codes are:

P1120 - Accelerator Pedal Position Sensor 1 High Input
(07) - Present


P1625 - Main Relay opens too late
(57) - Present

I took the whole UEC apart, including circuit board and fuses and all, and put the hairdryer over it all and gave it a good spray again of contact cleaner but no joy. He recommended to get a second hand like for like UEC off ebay this week and replacing it to see if that fixes it and if it doesn't we'll go from there and test the ECU.

[Lupus]

Any help?
https://www.vectra-c.com/forum/showt...pens-Too-Early

[Plook32]

I took off the ECU connector and gave it a good squirt of contact cleaner and now the accelerator is working again so the car is driveable with a wire from battery to ECU (but not without). Accelerator pedal error is now gone, but the relay error remains. It clears if I clear it and only returns if i remove the temporary fix and replace it. Without the temporary fix of the wire from the battery to the ECU I'm unable to connect diagnostics as there is no power to the ECU. The price of a full like for like ECU kit was basically the same as a fusebox on ebay so i got the full kit for £40 delivered. It includes relays and a fusebox so I'll have them in a few days and can test the relay, followed by the fusebox (UEC). If that doesn't work then I'll check for a bad wire from the UEC to the ECU before looking at replacing the whole ECU as it seems a bit of a nightmare to do. Thanks for the help folks.