Urgent help!

[Walshy3551]

I’m not too sure how to do all of this hey I’m still new to this

I bought this car off a previous owner that converted

 

[Grimes]

I’m not too sure how to do all of this hey I’m still new to this

Start with the easy checks. Is it a Getrag (hydraulic clutch) or T5 (cable clutch)? Easy to tell. If there’s a little fluid reservoir right next to the brake fluid reservoir you’ve got a getrag.

 

[Walshy3551]

Start with the easy checks. Is it a Getrag (hydraulic clutch) or T5 (cable clutch)? Easy to tell. If there’s a little fluid reservoir right next to the brake fluid reservoir you’ve got a getrag.

 

[Grimes]

It’s a T5, cable operated.

Has the engine stalled since you’ve had it, or did it just start happening out of the blue? If your Speedo is working then the sensor will be connected and working. If so, and assuming it’s been doing this since you’ve owned it, it could be that the previous owner hasn’t changed the ECU. That’s actually not too expensive or difficult to sort out. Give us some more details when things started to appear and we’ll be able to get you sorted fairly quickly I reckon.

 

[Walshy3551]

It’s a T5, cable operated.

Has the engine stalled since you’ve had it, or did it just start happening out of the blue? If your Speedo is working then the sensor will be connected and working. If so, and assuming it’s been doing this since you’ve owned it, it could be that the previous owner hasn’t changed the ECU. That’s actually not too expensive or difficult to sort out. Give us some more details when things started to appear and we’ll be able to get you sorted fairly quickly I reckon.

Yeah it’s been doing it since I bought it, I changed the ecu already, previous ecu was a 3.8L manual one and I changed it to a another manual one but both had the same outcome, the Speedo works

 

[Immortality]

T5 speedo input uses a different pin on the PCM than the auto. If an auto loom has been used for the conversion than the speedo input may not have been changed at the PCM end.

 

[Grimes]

He may have kept the automatic wiring loom and not connected the speedo cable in properly. There are a few threads here that step out the correct way to do it. I’ll have a look for one. Someone else might be able to chime in too.

 

[Walshy3551]

He may have kept the automatic wiring loom and not connected the speedo cable in properly. There are a few threads here that step out the correct way to do it. I’ll have a look for one. Someone else might be able to chime in too.

Okay thank you so much

 

[Grimes]

Okay thank you so much

OK, so if he’s kept the auto trans loom the fix is relatively easy (if you’re confident doing some auto elec work). The T5 speed sensor has three wires, power, earth and the one that has to signal the ECU.

I’m sensing you’re probably not at ease doing this so I suggest taking it to an auto elec and explaining that the manual trans speed sensor needs to be connected to the ECU. There’s a violet and white wire running from the speed sensor to the dash cluster that needs to be spliced into and a new wire run into ECU terminal D2. The best point the splice this wire will be behind the glovebox. (VW in the attached wiring diagram stands for Violet/White). M/T stands for manual transmission.

 

[Immortality]

If the dash is working but the PCM isn't seeing the speed sensor and they have used an auto loom you should try re-pinning the PCM plug. Just move the auto VSS pin to the manual VSS pin location. If it is a proper manual PCM than it should work (assuming they have wired the VSS at the trans using the original auto VSS signal wire and hooked up the power supply and ground).