Pectel ECU users roll call

[ashyers]

It's likely for a Bosch temperature sender. I suspect the air temp sensor (ACT in your maps). If it was the coolant temp sensor I doubt the car would start! If it is the ACT the system will default to a value that was input to the map. It's nice to have it, but the car will run without it.

 

Edit: Check the airbox or backing plate for your ITB's. If it's ACT it's possible it was disconnected by mistake.

Edited August 21, 2022 by ashyers

[Vovchandr]

3 hours ago, ashyers said:

It's likely for a Bosch temperature sender. I suspect the air temp sensor (ACT in your maps). If it was the coolant temp sensor I doubt the car would start! If it is the ACT the system will default to a value that was input to the map. It's nice to have it, but the car will run without it.

 

Edit: Check the airbox or backing plate for your ITB's. If it's ACT it's possible it was disconnected by mistake.

 

This sounded very plausible! So much so that I was almost disappointed to discover that my intake air temp sensor had its wire properly connected to it. I was thinking that maybe tuner forgot to connect it back and that would explain some of the pending issues

 

Quick google search brings up this type of Bosch liquid sensor with a connector that seems to match the pigtail, this is likely what you had in mind?

 

[Vovchandr]

Here is my Intake and one of my temp sensors. 

 

I also think this is my knock sensor but I don't believe it communicates with the Pectel ECU as I don't have a pigtail for it

 

 

 

 

 

 

Edited August 22, 2022 by Vovchandr

[ashyers]

It looks like your car has a bunch of the stock wiring and sensors still left on it. Do you know any history of the build? I'm guessing they added the Pectel ECU when they went to ITB's and left the factory stuff in place, even though it's not used. Unfortunately that makes the wiring "interesting"!

 

Check to see that your ECT is hooked up and also that the readings make sense when you look on the computer. Check the other readings too while you're at it. The system you have doesn't use many inputs and you should be able to see if things are working by looking at the sensors live.

[Vovchandr]

9 hours ago, ashyers said:

It looks like your car has a bunch of the stock wiring and sensors still left on it. Do you know any history of the build? I'm guessing they added the Pectel ECU when they went to ITB's and left the factory stuff in place, even though it's not used. Unfortunately that makes the wiring "interesting"!

 

Check to see that your ECT is hooked up and also that the readings make sense when you look on the computer. Check the other readings too while you're at it. The system you have doesn't use many inputs and you should be able to see if things are working by looking at the sensors live.

 

I believe this is the only sensor pigtail that doesn't go to anything the build was always a Zetec "200hp" ITB package so the wiring harness is made to read TPS and intake air temp. I don't believe I have any wiring left for the knock sensor and the car was always build with a TPS and vacuum rail for whatever reason.

 

I came across that pigtail by the ECU and I'm pretty sure it's been there throughout my ownership and not just a byproduct of some recent disconnect. That's a big reason as to why I'm curious as to what it could be. 

[CarlB]

To verify, you are correct, here are two pictures of my connector and senser. This is just a throwing parts at it solution, but you might want to replace the crank position sensor and look at the wire from the sensor to the ECU. Those sensors put out a square wave form and are difficult to test. The best way is with an oscilloscope. It isn't a strong signal, and the wire can pick up interference. When you posted pictures of the engine missing with fire in the intake, that could be a timing issue on those cylinders. Is the overheating happening only when the temperature under the bonnet would be the hotter than normal? If that sensor or wire are getting overheated that could cause your problem.    

 

   

[Vovchandr]

1 hour ago, CarlB said:

To verify, you are correct, here are two pictures of my connector and senser. This is just a throwing parts at it solution, but you might want to replace the crank position sensor and look at the wire from the sensor to the ECU. Those sensors put out a square wave form and are difficult to test. The best way is with an oscilloscope. It isn't a strong signal, and the wire can pick up interference. When you posted pictures of the engine missing with fire in the intake, that could be a timing issue on those cylinders. Is the overheating happening only when the temperature under the bonnet would be the hotter than normal? If that sensor or wire are getting overheated that could cause your problem.    

 

   

 

Thank you for taking time to look at yours and confirming.

 

Do you happen to also have a spare connector going to nowhere? 

 

Most of the misfiring issues and overheating have been so far solved by going to a tuner and getting it mostly dialed in. I still have some dialing in to do myself, which is partially why I started this thread. However misfire is mostly resolved and will try to tune the rest of issues out. 

[ashyers]

Is it for the IAC you removed?

[CarlB]

Yes it is the intake air temperature sensor.

[Vovchandr]

2 hours ago, ashyers said:

Is it for the IAC you removed?

 

IAC is still physically there and plugged in (picture 4), the lines from it go to nowhere and the intake plenum lines for the vacuum manifold are plugged. 

[MV8]

I'd cut the wrap and trace all the inputs to the pectel, then rearrange so the harness relies more on clamps than on the connections for support and leave a stress relief loop at the connectors. You can buy split loom or other type of cover instead of tape and just used a little tape every foot or so to keep it tight. Make a diagram of every connection to keep handy.

Edited August 24, 2022 by MV8

[CarlB]

Here is the pin out for my ECU. I assume it is the same as yours. I looked around for the name of the company Quicksilver gets connectors from but can't find it. If you need some connectors, I will get the name for you.

 

ECU Pinout Zetec T-2.pdf

[Vovchandr]

So small updates today. 

 

On a hunch I figured out how to turn on datalogging and how to pull it out using offload tool. 

 

However now I'm not sure what to do with the logged data or how to read it. 

 

I saved it and it became a ".pds" file that's labeled as Pi Dataset. 

 

Offload tool doesn't open files, only configurations and Pi Toolbox doesn't appear to see these files either. 

 

So now I can log but I'm not sure how helpful it is. I think I can review them on the spot In the offload tool but I can't save them to view them later unless I figure out how to open those files 

(unknown).1999-11-30.00-00-00-01.pds

Edited October 20, 2022 by Vovchandr