Spal fan's initial startup issues.
Joined: Oct 2007
Posts: 3,121
Likes: 75
From: Los angeles
I use to have this problem. I'm running two of the spal 12 inch extreme performance fans. Every time the fans kick on there was a huge voltage spike and the car would just die or the idle would dip down and the car would almost die. I had problems looking for a good fan controller or some kind of soft start system for the fans. I ended us wire a set of super capacitors for the fans and it fixed everything. Even time the fans kicked on then drained the super capacitor before the cars battery and the car would never stall any more.
http://www.ebay.com/itm/301128832966...%3AMEBIDX%3AIT
That's the super capacitors.
https://www.s2ki.com/s2000/topic/106...#entry22933113
That's my thread about this same issue with high output fans stalling the car.
http://www.ebay.com/itm/301128832966...%3AMEBIDX%3AIT
That's the super capacitors.
https://www.s2ki.com/s2000/topic/106...#entry22933113
That's my thread about this same issue with high output fans stalling the car.
Banned
Joined: May 2002
Posts: 3,624
Likes: 11
From: Raleigh, NC
What buggy said.. you can tell the ecu to add timing when the idle starts to dip.
pull timing in the timing map till the idle starts to drop, then add idle duty cycle to get the idle back up. The goal is to get more air into the engine.
Set the idle trims so that as soon as the idle starts to drop it feeds in more timing and it'll stop the rpms from dropping. If you see the voltage drop below 12v you can even set an idle brown out and have it kick idle dutycycle up when the voltage drops.
A key to this also is to make sure you have proper battery offset data for your injectors. This is where the cheaper injectors fail, they dont provide accurate data and it'll make life a little harder when the voltage drops.
pull timing in the timing map till the idle starts to drop, then add idle duty cycle to get the idle back up. The goal is to get more air into the engine.
Set the idle trims so that as soon as the idle starts to drop it feeds in more timing and it'll stop the rpms from dropping. If you see the voltage drop below 12v you can even set an idle brown out and have it kick idle dutycycle up when the voltage drops.
A key to this also is to make sure you have proper battery offset data for your injectors. This is where the cheaper injectors fail, they dont provide accurate data and it'll make life a little harder when the voltage drops.
Joined: Mar 2005
Posts: 22,143
Likes: 2
From: 949
Called my tuner he said all has been done is listed below my FI are Fuel Injection Clinic (FIC 900) he said they are good
I might have to try the DERALE box.
Asked a couple place to make the Ebay capacitor, no one want to make. As I drive in the California heat
I'm afraid the 3 or 4 click ON, Capacitor will be dead and not work as needed.
I might have to try the DERALE box.
Asked a couple place to make the Ebay capacitor, no one want to make. As I drive in the California heat
I'm afraid the 3 or 4 click ON, Capacitor will be dead and not work as needed.
What buggy said.. you can tell the ecu to add timing when the idle starts to dip.
pull timing in the timing map till the idle starts to drop, then add idle duty cycle to get the idle back up. The goal is to get more air into the engine.
Set the idle trims so that as soon as the idle starts to drop it feeds in more timing and it'll stop the rpms from dropping. If you see the voltage drop below 12v you can even set an idle brown out and have it kick idle dutycycle up when the voltage drops.
A key to this also is to make sure you have proper battery offset data for your injectors. This is where the cheaper injectors fail, they dont provide accurate data and it'll make life a little harder when the voltage drops.
pull timing in the timing map till the idle starts to drop, then add idle duty cycle to get the idle back up. The goal is to get more air into the engine.
Set the idle trims so that as soon as the idle starts to drop it feeds in more timing and it'll stop the rpms from dropping. If you see the voltage drop below 12v you can even set an idle brown out and have it kick idle dutycycle up when the voltage drops.
A key to this also is to make sure you have proper battery offset data for your injectors. This is where the cheaper injectors fail, they dont provide accurate data and it'll make life a little harder when the voltage drops.
Registered User
Joined: Jun 2010
Posts: 388
Likes: 1
You just need solder, a cheap harbor freight solder gun and a propane torch and read the instructions. You could probably used a flat screw driver and a propane torch to melt the solder onto the capacitor post.
The solution is given to you. You can pursue other means, but it us your wallet. I tucked mine under the front bumper, driven through 115F weather with no problems.
The solution is given to you. You can pursue other means, but it us your wallet. I tucked mine under the front bumper, driven through 115F weather with no problems.
Joined: Oct 2007
Posts: 3,121
Likes: 75
From: Los angeles
http://www.ebay.com/itm/Ultracapacit...item19f6b630b6
If your lazy you can pay $10 more for a super capacitor that is already built. The p tuning kit only has 1 spal 14 inch high performance pan. I have two of the spal extreme performance fans. I had the same problem as you for a long time. Fan controllers will solve this problem but I'm telling you the fastest and easy way to fix this is just buy wiring in the super capacitor into the fan.
I also live in Los angeles I imhave no issues with heat and I have been useing this super capacitor for quite a while now.
If your lazy you can pay $10 more for a super capacitor that is already built. The p tuning kit only has 1 spal 14 inch high performance pan. I have two of the spal extreme performance fans. I had the same problem as you for a long time. Fan controllers will solve this problem but I'm telling you the fastest and easy way to fix this is just buy wiring in the super capacitor into the fan.
I also live in Los angeles I imhave no issues with heat and I have been useing this super capacitor for quite a while now.
Joined: Oct 2007
Posts: 3,121
Likes: 75
From: Los angeles
What buggy said.. you can tell the ecu to add timing when the idle starts to dip.
pull timing in the timing map till the idle starts to drop, then add idle duty cycle to get the idle back up. The goal is to get more air into the engine.
Set the idle trims so that as soon as the idle starts to drop it feeds in more timing and it'll stop the rpms from dropping. If you see the voltage drop below 12v you can even set an idle brown out and have it kick idle dutycycle up when the voltage drops.
A key to this also is to make sure you have proper battery offset data for your injectors. This is where the cheaper injectors fail, they dont provide accurate data and it'll make life a little harder when the voltage drops.
pull timing in the timing map till the idle starts to drop, then add idle duty cycle to get the idle back up. The goal is to get more air into the engine.
Set the idle trims so that as soon as the idle starts to drop it feeds in more timing and it'll stop the rpms from dropping. If you see the voltage drop below 12v you can even set an idle brown out and have it kick idle dutycycle up when the voltage drops.
A key to this also is to make sure you have proper battery offset data for your injectors. This is where the cheaper injectors fail, they dont provide accurate data and it'll make life a little harder when the voltage drops.
My turner has work for hours to try to fix this. There is no amount of tuning that will fix this. The voltage spike when strong spal extreme performance fans come on is huge. The constant power when the fans are on is not the problem. It's only initial spike the split second the fans kick on. The only way to fix this is to add a super capacitor or two run some kind of fan controller that has a soft start feature that turns on the fans slowly.
Joined: Jan 2012
Posts: 621
Likes: 4
From: Tolland, Connecticut
I have the EXACT same issue. Whenever my car is at idle once it is at operating temp and the fan kicks on the idle drops to 600-700rpm and can not recover from the initial 1000rpm it should be at idle. I was thinking about upgrading the alternator wiring and battery wiring from a 8ga/4ga respectively to a 4ga on the starter and alternator and a 0/1 awg on the battery. This should help... never thought about being able to add timing to prevent the stall. I really think P-Tuning should address this issue and post a solution as almost everyone with a P-Tuning kit has this issue. I ended up putting a battery from my 2005 cummins 2500 in the trunk and it seemed to help for a while over the tiny oem honda battery.(talking about 2 issues personally. the fan causing the stalling. and the voltage delivery and powering system)
Joined: Apr 2009
Posts: 1,513
Likes: 119
My turner has work for hours to try to fix this. There is no amount of tuning that will fix this. The voltage spike when strong spal extreme performance fans come on is huge. The constant power when the fans are on is not the problem. It's only initial spike the split second the fans kick on. The only way to fix this is to add a super capacitor or two run some kind of fan controller that has a soft start feature that turns on the fans slowly.
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