Quick Throttle Body Question (Petrol Xantia)

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Stempy
Posts: 1626
Joined: 27 Feb 2004, 00:21

Post by Stempy »

CitroJim wrote:
I'll have a look into that Stempy. I've a feeling the 4HP20 ECU takes a lot of various signals to come to it's conclusions about which gear to select and when.
Thanks, it would be good to get to the bottom of it.
CitroJim wrote: Have you seen the lastest in my V6 blog? You can see a 4HP20 in bits in my workshop :D
You are a very brave man. If you manage to mend it I'll keep you in mind if/when mine packs up :shock:

addo
Sara Watson's Stalker
Posts: 7098
Joined: 19 Aug 2008, 12:38
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Post by addo »

CitroJim wrote:...I've a feeling the 4HP20 ECU takes a lot of various signals to come to it's conclusions about which gear to select and when.
AL4 is the same. Road speed, RPM, fluid temperature, mode selection, throttle position, kickdown actuation ("excition" :lol: ) and I think somehow - maybe by pressure sensing? - the incoming load via driveshafts (as it doesn't have an inclinometer).

I had a look at SC and the auto box does have a different TPS thn the manual. Maybe it's a double ganged pot?

Regards, Adam.