Engine Intake leak ? Intermittent frequent whistling sound with racing idle

JP1956
1,085

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
1,025

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 1,370
#2 me29
me29
Reputation 1,010
#3 dandyoun
dandyoun
Reputation 610
View All

Related Models For Sale

Used Honda CR-V"
689 Great Deals out of 50,144 listings starting at $999
Used Toyota Highlander"
421 Great Deals out of 15,914 listings starting at $4,100
Used Toyota RAV4"
657 Great Deals out of 34,072 listings starting at $2,500
Used Hyundai Sonata"
819 Great Deals out of 63,595 listings starting at $1,595
Used Ford Escape"
1,058 Great Deals out of 59,705 listings starting at $1,400
Used Ford Explorer"
749 Great Deals out of 42,251 listings starting at $1,495
Used Kia Sportage"
190 Great Deals out of 11,108 listings starting at $1,595
Used Jeep Grand Cherokee"
824 Great Deals out of 57,213 listings starting at $1,995

Used Cars For Sale

2015 Hyundai Santa Fe GLS AWD For Sale
660 listings starting at $28,900
2014 Hyundai Santa Fe GLS AWD For Sale
105 listings starting at $24,933
2013 Hyundai Santa Fe GLS AWD For Sale
59 listings starting at $20,995
2012 Hyundai Santa Fe GLS AWD For Sale
8 Great Deals out of 218 listings starting at $12,526