rev counter probs

16vzetec.com · Post by **16vzetec.com** » Sun Aug 06, 2006 9:20 am

i have got a mk4 escort xr3i efi with 2.0l zetec engine fitted+ megasquirt.
i have got the low rev counter reading problem.
someone mentioned it before to me but ive only just noticed it and was wondering what i have to do to get the rev counter to show correct revs.
cheers
mike

Chizfab · Post by **Chizfab** » Sun Aug 06, 2006 10:49 am

anyone??

i have this problem 2 on my 1.8

mops · Post by **mops** » Sun Aug 06, 2006 4:25 pm

please be more speicific.
can you describe the problem ? like what rpms do you expect and what do you see, and whether it is all the time, or just sometimes (when), etc, etc...

16vzetec.com · Post by **16vzetec.com** » Mon Aug 07, 2006 1:45 am

its all the time.
revs are about 1000 at tickover at the moment and the rev counter barely reads them.
rev counter only goes up half as much when revved

mops · Post by **mops** » Mon Aug 07, 2006 1:53 am

so you are basically saying that your rev counter shows only half of actual rpm's ?

are you using EIDS by any chance ?
if yes, there is a special way to connect rev counter (via tacho driver pin), search manual and forums.

disc · Post by **disc** » Tue Aug 08, 2006 8:48 am

Problem with rev counter shows only half of actual rpm's is caused by incorrect instrument cluster

Yesterday I changed my instrument cluster because faulty temp gauge and RPM's become half of actual rpm's.

Car is Orion 1.4 CVH, now with 1.8 Zetec Turbo. Using old CVH instrument cluster everything is fine even with Zetec engine. Then swaped cluster from donor car (where was my Zetec) and RPM's was low. Now i'm using old CVH cluster, just swaped fuel/temp gauge over.

16vzetec.com · Post by **16vzetec.com** » Tue Aug 08, 2006 6:02 pm

my clocks were supposed to be from efi xr3i

disc · Post by **disc** » Tue Aug 08, 2006 11:50 pm

I'm also using my old CVH EDIS4 module. Someone already grab EDIS4 from my donor car, so I can't try it.

RS TURBO S2 · Post by **RS TURBO S2** » Mon Aug 28, 2006 11:28 am

16vzetec.com wrote:i have got a mk4 escort xr3i efi with 2.0l zetec engine fitted+ megasquirt.
i have got the low rev counter reading problem.
someone mentioned it before to me but ive only just noticed it and was wondering what i have to do to get the rev counter to show correct revs.
cheers
mike

i was under the impression that you needed the efi tacho which is the one thats must be fitted in your motor?!? i am currently building a zetec turbo for my escort rs turbo and using ms without edis and am totally unsure which tacho to use so have bought one of each in the hopw one works, but i do keep thinking of getting a spa dash which are programable to different signal inputs but this would be an expensive solution.

not much help but worth noting the escort efi dash is different from the other cars so might be worth trying an rs turbo dash??

16vzetec.com · Post by **16vzetec.com** » Mon Aug 28, 2006 2:56 pm

i think i have sorted it now.
white dials had been fitted and the guy obviously didnt do the needle right.
i got that confused with the half rev problem that is common with the mfi counter.
cheers
mike

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