RPM'* at warm idle little high after UIM replacement
I replaced the UIM on my '99 SLE just after I bought it, and I also removed the throttle body and cleaned it (I first removed the sensors). Everything else seems to be ok, but I believe that the RPMs don't drop to where they should at warm idle. RPMs at warm idle in gear are around 750 RPMs. Sometimes the RPMs will drop a little below that, but the engine then runs a little more rough and the RPMs go back to around 750. The idle seems a little rough at idle in gear also.
There are no error codes, but I'm wondering if maybe there'* a vacuum leak somewhere. I double-checked my work, and all hose connections are tight and connected to the same locations as before the UIM replacement.
Any ideas on what to check?
'99 Bonneville SLE, white, 112,000 miles
'02 Park Avenue Ultra, white diamond pearl, 88,000 miles