Engine Intake leak ? Intermittent frequent whistling sound with racing idle

JP1956
865

Asked by JP1956 Mar 14, 2014 at 11:33 PM about the 2001 Hyundai Santa Fe GLS AWD

Question type: Maintenance & Repair

.Had to change valve cover gaskets & decided to replace all dry rotted & leaking hoses
& PCV at same time. After putting all back together idle searching from 1600 to 2600.
Rechecked all hoses, fittings & also replaced IAC (cracks in body by mounting bolts.
Then steady high idle 2600 RPM. Smoked engine, replaced lower & upper intake
gaskets. Idle still screaming at 2600 so pulled MAF and returned to normal if not a bit
low (550 to 690). Replaced MAF, idle STILL screaming at 2600 unless I unplug
connector. Engine now has intermittent but more frequent high pitched whistle, sound
like pass side or near firewall center of engine. Tried carb cleaner & propane, no
leak/suction or engine smoothing. Can there be a crack in 1 of the 2 pieces of the
intake manifold or plenum that is opening & closing with temp changes and the whistle
is air leaking or out ? Desperate to be pointed in the right direction here.

1 Answer

Sarge_AZ
985

My first thought is a large vac leak since it started after you replaced hoses. Could it be that you have some hoses routed wrong? If you can hear it and the idle is that high, I'm thinking a large vac hose like power brake booster hose or PCV hose.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Hyundai Santa Fe Questions

Hyundai Santa Fe Experts

#1 LouB
LouB
Reputation 1,280
#2 me29
me29
Reputation 880
#3 dandyoun
dandyoun
Reputation 590
View All

Related Models For Sale

Used Honda CR-V"
779 Great Deals out of 44,832 listings starting at $999
Used Toyota RAV4"
746 Great Deals out of 31,830 listings starting at $1,925
Used Toyota Highlander"
471 Great Deals out of 15,991 listings starting at $3,995
Used Ford Escape"
1,117 Great Deals out of 59,178 listings starting at $1,400
Used Hyundai Sonata"
1,043 Great Deals out of 65,761 listings starting at $1,595
Used Jeep Grand Cherokee"
1,226 Great Deals out of 55,001 listings starting at $1,999
Used Kia Sportage"
213 Great Deals out of 11,006 listings starting at $1,595

Used Cars For Sale

2015 Hyundai Santa Fe GLS AWD For Sale
830 listings starting at $29,975
2014 Hyundai Santa Fe GLS AWD For Sale
3 Great Deals out of 123 listings starting at $24,975
2013 Hyundai Santa Fe GLS AWD For Sale
3 Great Deals out of 49 listings starting at $21,096
2012 Hyundai Santa Fe GLS AWD For Sale
12 Great Deals out of 204 listings starting at $12,999
2011 Hyundai Santa Fe GLS AWD For Sale
7 Great Deals out of 150 listings starting at $10,497