EH Civic Vei to D15b

**Amusevtec** · 02-07-2012 05:09 PM

Hi Guys,

I'm having an issue with the engine I've recently put into my civic sedan,

It's a Vei.. so it would have been originally a D15z? That I replaced with a D16b.

The car idles great, no smoke coming out of the exhaust. But the engine "hesitates" and losses power when I'm coasting through gears or randomly in general. It shudders and losses power, then it'll jerk and power will be on again

When the engine is cold, or under load, the car revs fine though. Any suggestions as to what the problem may be?

**markismaximus** · 02-07-2012 05:15 PM

what ecu are you running?

**Amusevtec** · 02-07-2012 05:17 PM

Still the same ecu

**markismaximus** · 02-07-2012 05:26 PM

might have something to do with it.... D15z uses VTEC-E which is very different and possibly screwing with your timing...

**Amusevtec** · 02-07-2012 11:25 PM

Ah okay... would you know what ECU I can try and source that would work?

**dougie_504** · 03-07-2012 02:55 AM

Best sticking to an ECU that matches the engine mate IE D15B. Shouldn't be too hard to source here on OH or a wrecker.

**Amusevtec** · 04-07-2012 03:24 PM

Thanks guys

I'll giv that a try

**xclusive_eg8** · 04-07-2012 10:08 PM

Check ecu for codes man. My d15 acted strange like that, was code 7 - tps sensor. I changed that and cars been fine since, the bucking and hesitation ain't fun at all.