Needed: Tach Generator or Boost Module

I need to get a tach signal generator or booster module for a vehicle that i have that doesn't produce a strong enough tach signal ( 1990 Honda CIVIC DX ) & 86 VW Golf . The unit that I'm installing doesn't have alternator sense and the car doesn't have injector wires ( multi-port ) for me to tap into. If anyone else has any ideas on a tach solution, please feel free to let me know, otherwise I need to buy one of these modules and preferrably from a member of this forum.

I've asked my distributor but they don't understand remote start tech talk and they are French:errr: ( Not bashing the French but it's hard to get them to understand what I'm after if they are not installer's or familiar with the trade. ) Let me know what you guys have and get back to me at velocity@valleycable.com

TIA

civicdownlow wrote:

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astrostart makes a tach amplifer i can get a part # if interested

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That would be great ! Thanks

kgerry wrote:

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we stock them ( tach generators ) from Autostart and DEI

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Thanks for the reply. I can't seem to get a response back from those guys at AutoStart. How much did you want for (2) of them ? The vehicle in question are 86 Golf Diesel and a 90 Civic ( multi port injection ).

Let me know kgerry, TIA

there not generators they are amplifier

for example they take like a 1 cyl tachreading and amplify it to like a 2 or 4 cyl reading

ill have to check my cost

i get them from a place in fargo ,ND called auto systems

The Civic has a AC voltage of .6 at idle and goes up to about 2 when revving up at 4 g's. The .6 is too low for the remote start to be able to get a proper signal from. This is a problem and there is no injectors on this car becuase it's multi port FI.

The diesel has the tach signal on the alternator and there was no problems getting the tach to learn, but the problem lies when it sits for any amount of time, the remoet starter tries 3 times and no start.

Hope the tach amp will work

I'm sure you checked this already. however what's the resistance from your battery  neg terminal to your "ground" ? I remember once when i did a civic, i picked a bad ground, with a resistance of 100ohms and that totally messed up the tach learning..

From My what my DEI rep he told me ... Was to change grounds and that totally fixed the problem. he said should be less then 10 ohms.

I think i have a tach booster in my tool box from doing a preditor starter let me check tommrow when i'm at work.

silvercivicsir: Ground for the system is less than 10 ohms. I beefed up the ground also on the battery for the vehicle to see if this would help and it didn't.

mo12v : Where would this mount on a diesel engine ?

Here's the pic of the alternator that I used for the tach signal. Any thing seem wrong here ? Just asking those who know VW diesels

https://www.velocitymotorsport.com/alternator.jpg

NowYaKnow wrote:

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Jeff have you tried learning the tach signals at a higher RPM? (ie: while steadily holding the gas?) May be just enough to get the signal your looking for. Also we use the tach boosters from Ford/Code Alarm. I will try and get both the Ford and code alarm part numbers, but I don't know how much it will help as they are on back order we can't even get any right now. Otherwise I'd hook you up!

Mike

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Hey Mike,

The problem with the VW is that the alternator doesn't start charging until the car reaches about 1000 rpm's. The diesel doesn't rev any higher ( in most cases ) above this unless at driving speeds. The main problem is that I can get the remote start to learn the tach ( no problems here ), it just that after the car has sat for any period of time, the tach signal isn't strong enough for the RS to pick up because the alternator isn't outputting a strong enough signal becuase it doesn't charge under 1000 rpm's. I'm hoping with the tach amplifier, the small signal that is being output to the RS will get amplified enough that the tach is recognized when remote start sequence is activated.

Just for review, what happens is the car is placed into ready mode after it has been parked from driving....... ready for remote start for the next day. Customer presses the start button and car turns over crank and then dies right away ( within a second or 2 ) . RS tries 3 times and then has a no start error. Now here's the kick in the pants............. if the car is placed into ready mode and you try to remote start the vehicle right after driving it ( do not let it sit for any period of time ) , it works fine........ no problems at all. Catches in the first try and runs through the 15 minutte cycle the way it's suppose to.