no power low end

[STEALTHCORRADO]

so my old engine crapped out number 3 rod bearing so i bought a used engine, it has good compression looks pretty clean. but after the change it now has no power at the low end rpm's 1000 to 2500 then after seems o.k., has new plugs, wires, filter, it also seems to miss fire, do i need to reset any thing? or do any thing else?

[masterqaz]

Asides from the miss firing is it using the same trans or a different one from the donor car?

[STEALTHCORRADO]

same transmission 5speed, i didn't think i would matter?

[masterqaz]

No it won't make a difference if it's the same. There are different ring and pinion combos that would make it feel like you lost power.

[STEALTHCORRADO]

i think i may have figured it out, i forgot to ground the engine i think but the car is at the shop and im at work could that make a difference

[masterqaz]

depends on which ground but generally missing grounds is not good for anything.

[STEALTHCORRADO]

i,m thinking it maybe a main one it runs from the firewall to the engine. it is a flat braided one about a 3/4 of a inch wide. ill check it out this weekend and let ya know. if anyone has other tips let me know. thanks for looking

[Roadblock007]

Check your vacuum(sp?) hoses. I had a similar issue with low end power on a 1.8T AWM engine. Ended up being the fuel pressure regulator vacuum line was ruptured. Caused misfires too and poor idle. Might not be the same line but I would definately check them out to be sure.

RB

[Roadblock007]

Just reading another post and got reminded about something. Is the coil pack good? Maybe swap out your old one if you know it was working and see if it makes a difference. Pretty quick and easy to give it a try.

RB

[STEALTHCORRADO]

thanks RB ill look again at the vacume lines and it is dist not coil pack, but good call

[Roadblock007]

Sorry, should have payed more attention. My VR is a MKIV.

RB

[STEALTHCORRADO]

I have one other question my old engine had a egr valve and the new one does not will that make a difference at all .The new engine came with the wire harnessso i just twisted the old harness off at the conector and just plugged it into the car. do i stillneed to unplug #10 pin at the ecu.................

[GTIVRon]

I'd say yes, then you know for sure. (regarding cutting the EGR wire)

I'd also take the distributor from your old engine and put it on the new one. I had similar issue with a bad "cam position" sensor. It's part of the distributor and can't be bought separately. Or check to make sure you have it plugged in. It hangs pretty much directly below the distributor. Will have to feel for it.. 3 wire plug.

[STEALTHCORRADO]

i did swap the old one, the salvage yard kept the dist so i had to use mine. i cant wait to get this thing killin honda's again

[STEALTHCORRADO]

so i hooked the ground back up,cut the egr wire and seems to be alot better than before. i also check the dist cap and rotor and number six is all carboned up so ill try a new cap and see what happens... thanks for all the info to help me get closer to getting it running