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I think the 4x4 mounts are different from the 2wd mounts...did you get the correct mounts? Are they polyurethane, I hear those can transmit vibration. Just something to consider. Good luck 👍

By saying FSD are you referring to the pump mounted driver (PMD)? If so, where do you have it mounted? I have mine mounted under the front bumper and have not had that problem since (at least 10 years). It's usually best to mount the new PMD/ heatsink outside of the engine bay. Some climates may...

Roger that!

There's 9 inches of mercury to the EGR and MAP sensor at idle. All solenoids were replaced at the time of the new motor.

There's no military sticker, this motor was specifically built from scratch for me except it's the HD version which, I hope isn't causing me issues now.

Got it, I was thinking that was what was happening. Will the drive cycles progress if there are "pending codes"? Thanks Will

Hello all, Need advice with emissions. My 98 K1500 has less than 1000 miles since I installed a new GEP motor last year. Runs great but had to have it smogged and I was told the OBDII readiness monitors were "not ready". Apparently there are not enough drive cycles. I'm having difficulty finding...

I can see bleach helping quite a bit plus, it's cheap!

I would do it. Please report back with your progress and a few photos would be great.

Good example of how a balancer can go bad, thanks for sharing.

A load off your mind I'm sure👍

I found my on Amazon. It was AC Delco exact replacement. It was a good price and arrived quickly.

When I mistakenly put my orifice tube in incorrectly (backwards), the orifice tube was jammed so far down the tube I almost couldn't get it out. Luckily I was able to but, what I'm trying to say is that the pressure involved will definitely send an obstruction deep into your system.

Is your old condenser still serviceable. If so, put that back in and try.

🤞

With high pressure on one side sounds like a blockage somewhere. I had a similar situation only to discover that I was not paying attention to what I was doing and I put in the orifice tube backwards. After fixing that everything works great.

Also check ground wires

Check engine oil. What viscosity of oil is in the engine? Is the drive belt in good condition, free and clear of everything. Sometimes a belt can become fraid and slap as it goes round. That would be another test, slip the belt off and run it for a moment to eliminate the accessories. Overall...

Nice! Thanks for posting.

Perhaps :finger: a bad ground🤞