137 replies to this topic

[NickB787]

dam good club this

[A-F_20]

Sounds like the map sensor to me - someone on here who supercharged there car may have a spare you could try

[VX220BOB]

I had the same issue a few weeks back and found the earth wire on the engine ecu fixing screw loose and its been ok since tightening it, but not aware of hazards flashing or error codes and problem only seemed to happen when engine at low revs on a down hill over run, then went to accelerate and would it would only tick over, stop the car and restart then ok until the next time.

[slindborg]

i had a similar problem recently, i cut out & re soldered the loom of doom (connections by expansion bottle) turned out to be a map sensor, do you have a code reader?  

Oh my..... I give it less than a year before the wires break

[Acidpopstar]

Try your spare key (as weird as it may sound)  

Have you tried this?

[Goldfinger]

Have not tried spare key as I don't have one !!

 

Today a very nice chap who I met at my local parts dealer who was driving a westfield SE8 V* sounded good now why did I not buy one of those !!!

 

Restored my faith in people lent me his multi meter and he came over and put his OBD reader on and we found the following fault codes P1275 Accelerator Pedal Position Sensor 1 Circuit and also a fault P1271 Accelerator Pedal Positions (APP) Sensor 1 Tried to clear the codes but as soon as the ignition was turned the codes came back and seemed to alternate between the 2.  Looked at the accelerator information on the software and could see that the resistance and values were changing as the throttle was depressed and released, but the throttle response stuck at [color=rgb(84,84,84);font-family:arial, sans-serif;font-size:small;] 24%[/color]

 

[color=rgb(84,84,84);font-family:arial, sans-serif;font-size:small;]So today have done the following[/color]

 

• [color=rgb(84,84,84);font-family:arial, sans-serif;font-size:small;]Throttle connector cleaned and squirted contact cleaner in it[/color]
• [color=rgb(84,84,84);font-family:arial, sans-serif;font-size:small;]Took off the connectors at the rear near the overflow bottle and reconnected, checked with multi meter no resistance[/color]
• [color=rgb(84,84,84);font-family:arial, sans-serif;font-size:small;]Removed the coil packs and checked to see if any water none so cleaned and replaced[/color]
• Took off the throttle body connector cleaned and squirted with contact juice and replaced
• Took off the connector to the ECU on the coli pack and squirted cleaned
• Replaced and checked all fuses
• Replaced any earth wires I could see and checked

Have not checked the ECU earth wire going to do that now

 

Other than that I have run out of ideas. Depressed like the throttle should be 

 

 

 

 

 

 

 

 

 

[Goldfinger]

Sorry where is the MAP sensor and where is it on the car please

 

[CHILL Gone DUTCH]

If your 2.2 na the map sensor is on the plastic inlet manifold near throttle body

Edited by CHILL Gone DUTCH, 31 October 2014 - 06:31 PM.

[smiley]

P1271:

 

1. Corroded or poor contact on connections on throttle loom at the throttlebody. Clean with contact spray or fix 2. Wiring near stickshift exposed/damaged. Remove stickshift console and have a look.

 

(let us know if any of above helps, so i can add the 1275 to the database also)

 

 

 

Edited by smiley, 31 October 2014 - 08:24 PM.

[Goldfinger]

Cleaned all of the contacts on the throttle body. Have found the MAS sensor under the throttle body and have ordered a replacement

 

Will take a look now at gear shift console, let you know .......

[Goldfinger]

Hi have managed to get to the gear lever and found 2 wires a black and a red one heavily corroded and not connected to anything?

 

Do these wires have a relevance and are they supposed to be grounded they were covered in a plastic sheath

 

Thank you now running out of ideas??

[NickB787]

if they are under the gear shift cover they might possibly be for a small red LED which should be there and flash to show the car alarm is on

[Goldfinger]

Yes that looks right.

 

Thank you

[smiley]

Hi have managed to get to the gear lever and found 2 wires a black and a red one heavily corroded and not connected to anything?

 

 

You got the whole console out? (as the 1271 was reported where the gearstick had damaged a few wires in that thick loom going to the back of the engine)

[Goldfinger]

Hi yes managed to get the whole consul out but the two wires are to the red alarm LED so nothing crucial

 

I will give the wiring under the gear leaver a good inspection but I think that they are OK there does not seem to be any wear or damage.

 

I am confused however I have removed the expansion tank and found some connectors there, there was a black one with six wires so I have cut these from the connector and soldered and re-connected. There is also a larger black connector with 4 wired which I have checked and coated with contact cleaner. I cannot seem to locate the blue connector that everyone keeps referring too.

 

Many thanks

[smiley]

These 2.

 

[Goldfinger]

Thank you, I guess that this photo is taken without the rear clam from the passenger rear?

 

How many wires should there be roughly ?

 

Many thanks

[PaulCP]

You can see them more clearly in the pic contained in post #7 In post #26 you say "Took off the connectors at the rear near the overflow bottle and reconnected, checked with multi meter no resistance" Which ones were you referring to, I assumed it was these 2, which are the ones which usually cause problems

Edited by PaulCP, 01 November 2014 - 03:00 PM.

[smiley]

Thank you, I guess that this photo is taken without the rear clam from the passenger rear?

 

 

Difficult to acces from engine bay.

Easier to remove left rear wheel, wheel arch, then you have full access.

Both connectors have plenty of wires. It's usually the blue one causing havoc with throttle (aka loom of doom)

 

Open them up, and see if the are not corroded, and if male pins still can slide nice into females.

Once checked, spray with contact cleaner.

 

After spray i would advise to tyrib the connectors to the holder at the places marked with the red lines in the photo. (to help with less room to wiggle and cause issues)

 

 

1271 has also sometimes appeared with LOD, but never consistently.

Edited by smiley, 01 November 2014 - 04:21 PM.

[Goldfinger]

Thank you 

 

To update this is where I am, I believed that I had cleaned the 2 connectors referred to as the Loom of Doom, however not sure what I have cleaned and checked as these are obviously not the correct ones.

 

After more thought and investigation it became obvious that the previous owner of the car had experienced problems before with the LOD as he/she has cut all of the connectors out and had solder wired and insulated together so it looked as though they were part of the loom. Therefore I was looking for connectors that did not exist. Today exposed all of the wires, which I now know would have been  connected with the X2 and X3 connectors, From the body of the passenger side, leading to the Throttle Body Control unit, the Coil Pack, The ECU etc. and to the Exhaust Gas Release Valve. Have cut integrity tested and re-soldered all wires.

 

Disconnected and refreshed the battery terminals the live was slightly lose so packed and tightened

 

Took out fuse 8 and removed the ECU terminal and left for 20 minutes, I don't have the Cam Bus reader so cannot see if there is a fault. Started the car and still no throttle response, Arrghhhhhhhh.

 

I am now thinking that this is a Throttle Body fault or that the Pedal is dodge.

 

Any ideas greatly appreciated.......................