Long cranking time to start
Joined: Mar 2010
Posts: 3,601
Likes: 103
From: Toronto
1. Log it at a stone cold start
2. Log it at an operating temp start
3. Send logs to me or share on here via screenshot. We want to see sync time in seconds followed by crank time after successful sync.
7 seconds is too long even with AEM Infinity. Other ECUs offer pre-start delay to build oil pressure. AEM infinity does not offer such feature so there isn’t a tick-box that you might have ticked so... yes tune related it sounds like.
On a cold start sync should not take longer than 3 seconds from my experience. Once synced it shouldn’t take longer than another 2 seconds to fire.
2. Log it at an operating temp start
3. Send logs to me or share on here via screenshot. We want to see sync time in seconds followed by crank time after successful sync.
7 seconds is too long even with AEM Infinity. Other ECUs offer pre-start delay to build oil pressure. AEM infinity does not offer such feature so there isn’t a tick-box that you might have ticked so... yes tune related it sounds like.
On a cold start sync should not take longer than 3 seconds from my experience. Once synced it shouldn’t take longer than another 2 seconds to fire.
I just checked my own cold start data logs and it takes ~2seconds to start (1.2 seconds to get SyncState=1 and then 0.8 seconds to get RPM over 800) but it feels like an eternity when you're sitting there holding the start button down though
Joined: Aug 2006
Posts: 5,589
Likes: 69
From: New England
I forgot to mention... if you do generate logs for us from a true cold start, remember to let the Wideband sensor warmup, prior to hitting that start button.
The way you know it's ready and warmed up is after 60 seconds or so, the LAMBDA/AFR reading will go from 14.7AFR-ish to almost full lean.
The way you know it's ready and warmed up is after 60 seconds or so, the LAMBDA/AFR reading will go from 14.7AFR-ish to almost full lean.
Joined: Apr 2004
Posts: 1,273
Likes: 7
From: tiverton
I've been trying different things to remedy this . Nothing works . Myself and my tuner Jeff Evans have accepted the fact that there is some odd issue going on here . Perhaps when they eventually release V96.4 the issue will be resolved . Fingers crossed .
Joined: Aug 2006
Posts: 5,589
Likes: 69
From: New England
@joes sled 2000 , the long sync/start time or the pump prime?
My pump primes the second the key is turned and I even bumped it to a 3sec prime.
My pump primes the second the key is turned and I even bumped it to a 3sec prime.
Joined: Mar 2010
Posts: 3,601
Likes: 103
From: Toronto
Joined: Apr 2004
Posts: 1,273
Likes: 7
From: tiverton
@joes sled 2000 , the long sync/start time or the pump prime?
My pump primes the second the key is turned and I even bumped it to a 3sec prime.
My pump primes the second the key is turned and I even bumped it to a 3sec prime.
