Rough idle when hot with a rebuilt engine

[jeff88]

I was finally able to get the engine rebuilt in my rig and have been driving it for a couple of weeks now. I've noticed that sitting at a light and at low speeds around 5MPH (like coming to a stop), there is a rough vibration, but only once the engine warms up. When engine temp. is still cold, no issues.

The caveat is that it feels like the vibration is in the body. I don't feel it in the steering wheel or shifter. The 4WD shifter has the typical heavy vibration. I've put it in neutral and the vibration is still there, same as park.

The injectors are kinda loud, at least more than what I remember from before the rebuild. I know it's the injectors making the noise, because I did the stethoscope test, putting a piece of metal right on the injectors itself. I have no idea if this has anything to do with my issue, but it is there.

There's no CEL either.

Any ideas on what to check for to fix it?

 

[jgue467]

are engine/tranny mounts fresh? Have you hooked up an odb2 scanner (e.g. torque) to monitor real time a/f mixtures and other stats? :smokin:

 

[jeff88]

Actually, I think the mounts are just the originals, but we only used them because they didn't look warn out. But we didn't take the tranny out, so maybe the tranny mounts need a good look-over.

I keep forgetting to get my UltraGauge out of my Corolla. I'll try to remember to grab it and report back with readings.

Thanks!

 

[jeff88]

So I finally got the UG into my 4R and then finally got the pics off of my gf's phone.


Don't mind my gf's bag...





These are all at idle, the only time I notice a problem. I'm not going to lie, I have no idea what most of these numbers mean. I don't really know what abs TP1% is, nor timing advance (is that number in degrees?), nor the bank1 O2 sensor. Do these numbers seem to be in a good range?

I haven't had a chance to look at the tranny mounts, I'll probably get to that when I do the first oil change.