Chrysler 5.7 and 6.4 intake manifolds

Status
Not open for further replies.
J

JLTD

Joined
Dec 15, 2017
Messages
3,275
Location
On another site
Apologies if this has been posted before, after a short search I didn't find it.


08-15 Chrysler 5.7 & 6.4 Engines
This issue has been reported with 100% occurrence on the Challenger/Charger/Ram forums.The stock intake manifolds are not properly torqued from the factory which leads to cold start, idle, acceleration and throttle issues.Everyone who has checked has reported that the bolts were loose and took multiple full rotations to tighten. Borrow or purchase an in-lb torque wrench and torque each bolt to 105 in-lb when the engine is cold. This has been reported to resolve cold start and idle issues as well as increase throttle response and even power output.

Hope that helps someone out.
 
Originally Posted By: JLTD
08-15 Chrysler 5.7 & 6.4 Engines
This issue has been reported with 100% occurrence on the Challenger/Charger/Ram forums.The stock intake manifolds are not properly torqued from the factory which leads to cold start, idle, acceleration and throttle issues.

From what I've read, it's not that they were not properly torqued from the factory, but more that they tend to loosen after a new engine goes through some heat cycles, hence the need to re-torque.
 
I will have to check the intake manifold bolts on my Ram when I do the oil change here shortly. Never had any problems with cold start with it though.
 
Originally Posted By: Sunnyinhollister
What is the required torque value?


105 inch pounds.
 
Originally Posted By: Quattro Pete
Originally Posted By: JLTD
08-15 Chrysler 5.7 & 6.4 Engines
This issue has been reported with 100% occurrence on the Challenger/Charger/Ram forums.The stock intake manifolds are not properly torqued from the factory which leads to cold start, idle, acceleration and throttle issues.

From what I've read, it's not that they were not properly torqued from the factory, but more that they tend to loosen after a new engine goes through some heat cycles, hence the need to re-torque.


That makes sense also...either way, they need to be tightened up
 
Originally Posted By: JLTD
08-15 Chrysler 5.7 & 6.4 Engines
Does 08-15 refer to years of manufacture where this issue existed? If not, what years are affected? Has Chrysler figured it out by now?
 
OP: That's interesting. I have owned a 2014 Ram and 2015 Challenger both with the 5.7L engine. I spent a lot of time on forums for these vehicles and don't recall this being a major issue of discussion. I did not have the issues you speak of with either of my vehicles. I currently own a 2016 Charger and have not seen this issue discussed on the Charger forums either. Some vehicles may have had this issue but your claim that it was/is a problem with 100% occurrence is not credible.
 
Last edited:
Originally Posted By: SilverSnake
OP: That's interesting. I have owned a 2014 Ram and 2015 Challenger both with the 5.7L engine. I spent a lot of time on forums for these vehicles and don't recall this being a major issue of discussion. I did not have the issues you speak of with either of my vehicles. I currently own a 2016 Charger and have not seen this issue discussed on the Charger forums either. Some vehicles may have had this issue but your claim that it was/is a problem with 100% occurrence is not credible.


Yeah, I've never heard of it either
21.gif
 
Originally Posted By: OVERKILL
Yeah, I've never heard of it either
21.gif


Doing some internet searches, you do find a mention of it here and there, but it does not appear to be anywhere close to "100% occurrence."
 
Never heard of it before either, and never seen anything about a TSB or recall notice as would be expected if this occurred with a degree of statistical significance across 8 model years of engine / vehicle manufacture.
 
Well, don't kill the messenger. It's a direct quote I saw and I thought it would be helpful, in case some members were experiencing the issue. Guess it's more of an annoyance since it's "not 100%".
 
Last edited:
Originally Posted By: JLTD
Well, don't kill the messenger. It's a direct quote I saw and I thought it would be helpful, in case some members were experiencing the issue. Guess it's more of an annoyance since it's "not 100%".


Would be useful to see the source. Provide a link please.
 
Originally Posted By: SilverSnake
Originally Posted By: JLTD
Well, don't kill the messenger. It's a direct quote I saw and I thought it would be helpful, in case some members were experiencing the issue. Guess it's more of an annoyance since it's "not 100%".


Would be useful to see the source. Provide a link please.


My phone won't copy the link properly but it is on Fuelly.com. Do a google search for "each bolt to 105 in-lb when the engine is cold" and follow the link to Fuelly.

Note at the bottom says that it works for 59% of Fuelly members; so it is highly likely that the people here that have not experienced the issue are in the other 41%.
 
Originally Posted By: JLTD
My phone won't copy the link properly but it is on Fuelly.com. Do a google search for "each bolt to 105 in-lb when the engine is cold" and follow the link to Fuelly.
Here it is: http://www.fuelly.com/tips/761/08-15-Chrysler-57-64-Engines


Quote:
Note at the bottom says that it works for 59% of Fuelly members; so it is highly likely that the people here that have not experienced the issue are in the other 41%.
That feature on Fuelly is more of a Like/Dislike button. I wouldn't draw too much from it.
 
Originally Posted By: Quattro Pete
Originally Posted By: JLTD
My phone won't copy the link properly but it is on Fuelly.com. Do a google search for "each bolt to 105 in-lb when the engine is cold" and follow the link to Fuelly.
Here it is: http://www.fuelly.com/tips/761/08-15-Chrysler-57-64-Engines


Quote:
Note at the bottom says that it works for 59% of Fuelly members; so it is highly likely that the people here that have not experienced the issue are in the other 41%.
That feature on Fuelly is more of a Like/Dislike button. I wouldn't draw too much from it.



Exactly. And the claim it happens 100% of the time is utter lunacy.
 
Originally Posted By: OVERKILL
Originally Posted By: Quattro Pete
Originally Posted By: JLTD
My phone won't copy the link properly but it is on Fuelly.com. Do a google search for "each bolt to 105 in-lb when the engine is cold" and follow the link to Fuelly.
Here it is: http://www.fuelly.com/tips/761/08-15-Chrysler-57-64-Engines

Quote:
Note at the bottom says that it works for 59% of Fuelly members; so it is highly likely that the people here that have not experienced the issue are in the other 41%.
That feature on Fuelly is more of a Like/Dislike button. I wouldn't draw too much from it.

Exactly. And the claim it happens 100% of the time is utter lunacy.


^
This
 
Last edited:
Status
Not open for further replies.

Similar threads

P
Intake manifold bolt missing
2
Replies
32
Views
2K
zzyzzx
F
Pulled intake and found carboned up valves.
Replies
6
Views
2K
Cujet
B
2008 P71 Crown Vic Intake Manifold Dilemma
2
Replies
37
Views
5K
Timmastertech
D
2003 Buick Century 3.1 intake manifold port size
Replies
10
Views
1K
michaelluscher
T
Urgent help needed - Ticking Chrysler 4.7
3 4 5
Replies
93
Views
6K
TheSavage4.7
Back
Top