• Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!

  • Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.

M1123A2 engine noise while traveling on highway.

C

Creed

Member
38
28
18
Location
Salt Lake City
Hey guys. Drive my hmmwv on highway for first time. I got an astounding 49 mph. While coasting my engine gets really loud for a while, dies down and then starts again. Is that normal. Its seems a fan or RPM just gets really high and can hardly hear anything in the cabin. I will post a video. Hopefully you can hear the difference.
 
C

Creed

Member
38
28
18
Location
Salt Lake City
Creed said:
Hey guys. Drive my hmmwv on highway for first time. I got an astounding 49 mph. While coasting my engine gets really loud for a while, dies down and then starts again. Is that normal. Its seems a fan or RPM just gets really high and can hardly hear anything in the cabin. I will post a video. Hopefully you can hear the difference.
Click to expand...
youtube.com

hmmwv engine noise while coasting on highway

youtube.com youtube.com
Added video. Let me know what you think. Thanks.
 
  • Like
Reactions: OBX
Milcommoguy

Milcommoguy

Well-known member
Supporting Vendor
1,710
2,265
113
Location
Rosamond, CA
Mogman

Mogman

Moderator
Staff member
Moderator
Steel Soldiers Supporter
6,931
9,589
113
Location
Papalote, TX
That is the fan kicking in towards the end of the video if that is what you are talking about, it does also seem to be running quite a few RPMs for 50MPH.
Is it shifting or are you running along in 2nd gear?
 
Mogman

Mogman

Moderator
Staff member
Moderator
Steel Soldiers Supporter
6,931
9,589
113
Location
Papalote, TX
I think you may be running in limp mode, again is the transmission shifting? no real difference in the turbo, horsepower difference is very marginal.
 
Mogman

Mogman

Moderator
Staff member
Moderator
Steel Soldiers Supporter
6,931
9,589
113
Location
Papalote, TX
Also is does not sound like you are "coasting" the only time you coast in a HMMWV is occasionally downhill.
Could you mean while cruising?
 
C

Creed

Member
38
28
18
Location
Salt Lake City
Creed said:
Also 49 mph is horrible. I was thinking of this turbo vs. a swap. Lot less money. What do you think?
Click to expand...
Mogman said:
That is the fan kicking in towards the end of the video if that is what you are talking about, it does also seem to be running quite a few RPMs for 50MPH.
Is it shifting or are you running along in 2nd gear?
Click to expand...
Have in overdrive and H.
 

Attachments

C

Coug

Well-known member
Steel Soldiers Supporter
2,975
4,356
113
Location
Olympia/WA
if the max you can do is 49mph then either you're stuck in limp mode (2nd gear) or you have a power output issue.


Does it feel like it's shifting gears at all?
 
MarkM

MarkM

CODE BROWN...It's all going to sh~t !
Steel Soldiers Supporter
1,081
1,972
113
Location
WOBURN. MA.
After listening to the video it sounds like you are only in 2nd gear and the fan should stay on like 2 min. Try shifting the gears manually and see if you are shifting properly.

Mark
 
C

Creed

Member
38
28
18
Location
Salt Lake City
Mogman said:
That is the fan kicking in towards the end of the video if that is what you are talking about, it does also seem to be running quite a few RPMs for 50MPH.
Is it shifting or are you running along in 2nd gear?
Click to expand...
I don't feel it shifting. Is there anyway to know for sure?
 
Mogman

Mogman

Moderator
Staff member
Moderator
Steel Soldiers Supporter
6,931
9,589
113
Location
Papalote, TX
It should be quite obvious if it is shifting or not, when in limp mode it would seem to bog a little on takeoff (starting in second instead of 1st) and then it does not shift, thing makes too much noise not to notice when it shifts.
 
  • Like
Reactions: 98G
You must log in or register to reply here.
110,897members
165,315threads
2,326,244posts
1,562online users
Top