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Old August 31st, 2009, 05:22   #1
cod
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Default Hammond Mod ??

Hi,
I have been reading the hard to start when hot thread and see the Hammond Mod talkd about.
Where is the link explaining how to do this mod ?
I tried to find it .
Thanks
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Old August 31st, 2009, 05:59   #2
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hammer mod. AND NO!!!!!!!!! DO NOT DO IT!!!!!

You need someone with a vagcom and experience to do this. You could possibly REALLLLLLLLLLY damage the pump. It will not help your 99's start. They need a reflash of the ECU to solve this problem.
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Old August 31st, 2009, 08:22   #3
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Thanks
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Old August 31st, 2009, 14:00   #4
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Hamman mod

I don't care for the idea, which is why I replaced the ECM with one that has the correct starting program (RC2).

The idea is simple - disconnect the engine coolant temperature signal when the key is in the start position.

The correct starting program is also in ECM coding 1 automatic transmission. It will work fine for the most part, but there will be a TCM missing signal code (which I don't remember seeing the MIL illuminate for) and the clutch switch will not work. This means some fuel damping software is bypassed and the cruise control won't disable when the clutch is pressed. The starting interlock will still work though.
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Old August 31st, 2009, 14:11   #5
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Its the Hamm's mod!

You drink a 12-pack of Hamm's beer and fall underneath your TDI to find

your skid plate gone!
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Old August 31st, 2009, 16:33   #6
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That's the up there don'tchaknow hamms mod!
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Old December 31st, 2017, 10:56   #7
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Does this Hammond mod actually work.
I have a 54 plate Golf 2.0 TDI & a 55 plate Golf TDI the 55 plate is superb with cold and hot starting but the 54 plate takes about 1.5-2 secs to start because of this so called ecu software problem common on 99.5% of 2.0 TDI's
I know a new Bosch Battery will cure the poor hot start as well as a New Starter but only temporary as these parts wear with age surely a relay will last 3 times longer.
I know the ecu needs to see 250rpm from crank sensor before it will squirt fuel in injectors hence with a slower worn starter it might only be 220rpm not enough for a hot start.
Or am I best to forget the relay hammond job and just get a new Starter?
As the Bosch Battery is only 2 years old!!

Last edited by Seb500; December 31st, 2017 at 11:00.
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Old December 31st, 2017, 11:10   #8
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VE pump in a 2.0L?
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Old December 31st, 2017, 11:56   #9
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if your carefull you can hammer mod no issue. it helps 100% to have VAG-COM with vcds though. what engine code?
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Old December 31st, 2017, 12:03   #10
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Quote:
Originally Posted by Seb500 View Post
Does this Hammond mod actually work.
I have a 54 plate Golf 2.0 TDI & a 55 plate Golf TDI the 55 plate is superb with cold and hot starting but the 54 plate takes about 1.5-2 secs to start because of this so called ecu software problem common on 99.5% of 2.0 TDI's
I know a new Bosch Battery will cure the poor hot start as well as a New Starter but only temporary as these parts wear with age surely a relay will last 3 times longer.
I know the ecu needs to see 250rpm from crank sensor before it will squirt fuel in injectors hence with a slower worn starter it might only be 220rpm not enough for a hot start.
Or am I best to forget the relay hammond job and just get a new Starter?
As the Bosch Battery is only 2 years old!!
"54 plate" doesn't mean anything to the rest of the world ... we need what model year the car is at a minimum, and preferably what engine it has.

I THINK your engine is a 16-valve "pumpe-duse", which does not have a separate external "Bosch VE" fuel injection pump, and if that's the case, the "hammer" mod is not applicable, not possible, can't be done ... because it only applies to the older engines with an external Bosch VE rotary distributor injection pump.
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Old December 31st, 2017, 13:16   #11
Tdijarhead
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Quote:
Originally Posted by Seb500 View Post
Does this Hammond mod actually work.
I have a 54 plate Golf 2.0 TDI & a 55 plate Golf TDI the 55 plate is superb with cold and hot starting but the 54 plate takes about 1.5-2 secs to start because of this so called ecu software problem common on 99.5% of 2.0 TDI's
I know a new Bosch Battery will cure the poor hot start as well as a New Starter but only temporary as these parts wear with age surely a relay will last 3 times longer.
I know the ecu needs to see 250rpm from crank sensor before it will squirt fuel in injectors hence with a slower worn starter it might only be 220rpm not enough for a hot start.
Or am I best to forget the relay hammond job and just get a new Starter?
As the Bosch Battery is only 2 years old!!

Ok I always thought google was my friend, but even she couldn’t tell me what a 54 or 55 plate Golf is. So, what is it.
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Old December 31st, 2017, 15:41   #12
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Wait! What is a HAMMOND Mod?

Maybe made a wrong turn and wanted to go here:

http://www.electronickeyboardservice.com/
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Old December 31st, 2017, 17:18   #13
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Now I'm really confused and thrown back into 2009 just for good measure!?
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Old December 31st, 2017, 17:25   #14
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Quote:
Originally Posted by UhOh View Post
Wait! What is a HAMMOND Mod?
[/URL]
I think it's some kind of Italian tune up with questionable consequences?

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Old December 31st, 2017, 17:40   #15
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So, Owain, are you saying that it increases smoke?
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