Engine Intake leak ? Intermittent frequent whistling sound with racing idle

3,655

Asked by 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.

2 Answers

1,205

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 of 1 people found this helpful.
10

I had the same problem high idle at 2000 rpm no power couldn't go over 20 mph I looked for vacuum leaks and found nothing what I did find was a fuel line that had cracks in it I believe it connects to the egr valve not for sure but its on the front driver side close to the transmission dip stick I didn't have a pc of hose so I used water weld made by jb weld and some self adhering tape and fixed the fuel leak and it's still running and my check engine light went off also. I truly hope this helps someone because I was stumped myself my car popped up 4 codes and that wasn't any of the reasons the check engine light was on so to be safe check this fuel line before you go spending a butt load of cash on stupid codes . I can send a pic of location of the fuel line if needed email me @ johnnyjkj1@gmail.com

1 of 1 people found this helpful.

Your Answer

Hyundai Santa Fe Experts

  • #1
    LouB
    Reputation
    3,630
  • #1
    me29
    Reputation
    3,630
  • #3
    cargurus55
    Reputation
    1,140
View All

Related Models For Sale

Used Honda CR-V
693 Great Deals out of 59,084 listings starting at $999
Used Toyota Highlander
515 Great Deals out of 33,837 listings starting at $2,450
Used Toyota RAV4
753 Great Deals out of 50,533 listings starting at $1,195
Used Hyundai Sonata
782 Great Deals out of 54,560 listings starting at $1,500
Used Ford Escape
1,023 Great Deals out of 100,488 listings starting at $850
Used Ford Explorer
1,030 Great Deals out of 70,454 listings starting at $1,000
Used Nissan Pathfinder
414 Great Deals out of 26,139 listings starting at $2,500
Used Jeep Grand Cherokee
930 Great Deals out of 71,824 listings starting at $1,200

Used Cars For Sale

2015 Hyundai Santa Fe GLS AWD For Sale
3 Great Deals out of 83 listings starting at $17,788
2014 Hyundai Santa Fe GLS AWD For Sale
8 Great Deals out of 133 listings starting at $14,499

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.