HomeDashboardFAQSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksMemberlistLog in
Share | 
 

 engine slam when hot

View previous topic View next topic Go down 
AuthorMessage
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: engine slam when hot   Tue Jun 01, 2010 11:33 pm

Hi I have a 96 Riv with the L67 and when the motor is cold it run great but when it starts to run hot it start to slam . Someone can tell me what it can be? thanks!!
Back to top Go down
AA
Administrator
avatar

Name : Aaron
Age : 40
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18310
Merit : 239

PostSubject: Re: engine slam when hot   Tue Jun 01, 2010 11:35 pm

How hot does it show on the temp gauge? When does it make the noise, when you hit the gas?

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
Back to top Go down
http://www.cardomain.com/ride/657082/4
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Tue Jun 01, 2010 11:41 pm

on the idle and when I it the gas! When the temp are near the middle of the temp gauge. My Temp gauge are going just a little bit over the middle sometimes . And by the way I don't have any mod on my car
Back to top Go down
Eldo
Expert
avatar

Name : Mark
Location : West Salem, Oregon... FINALLY
Joined : 2009-04-09
Post Count : 3014
Merit : 100

PostSubject: Re: engine slam when hot   Tue Jun 01, 2010 11:55 pm

My question is "what is a slam" ?

Typically that kind of description is reserved for a broken mount...
Back to top Go down
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 12:17 am

sorry i'm not very good in english !! I don't know the appropriate word for this . in french it's the verb "claquer" in google translator they give me that "slam,chatter,crack,bang,clap,flap,clatter,crackle,pop off,curry,squeak" I don't know if it can help you
Back to top Go down
robotennis61
Guru
avatar

Name : robotennis
Age : 55
Location : las vegas
Joined : 2007-12-17
Post Count : 5559
Merit : 142

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 3:30 am

zoot alors! it sounds like a broken tranny mount or motor mount.
Back to top Go down
Abaddon
Expert
avatar

Name : Scott
Location : Macomb, Michigan
Joined : 2010-02-24
Post Count : 4164
Merit : 171

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 9:15 am

Either a mount or the trans is low on fluid causing a delay-bang when hot....or even the TCC solenoid.
Back to top Go down
Eldo
Expert
avatar

Name : Mark
Location : West Salem, Oregon... FINALLY
Joined : 2009-04-09
Post Count : 3014
Merit : 100

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 10:48 am

Abaddon wrote:
Either a mount or the trans is low on fluid causing a delay-bang when hot....or even the TCC solenoid.

That's a possibility... Frank, check the transmission fluid level, parked on a flat surface, after you've driven the car and the problem has started.

Also, is there a particular gear that this happens in, like only when in 3rd or 4th?
Back to top Go down
AA
Administrator
avatar

Name : Aaron
Age : 40
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18310
Merit : 239

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 10:50 am

Quote :
That's a possibility... Frank, check the transmission fluid level, parked on a flat surface, after you've driven the car and the problem has started.
And remember to leave engine running when you check!

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
Back to top Go down
http://www.cardomain.com/ride/657082/4
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 7:26 pm

all the gears and it's not the tranny it's the engine. My first idea was the Rod bearings because it's mostly sound in the bottom of the motor but if it was that, that will sound anytime not only when hot
Back to top Go down
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 7:33 pm

and today I found that the thermistor does not mean that my fan either :S
Back to top Go down
AA
Administrator
avatar

Name : Aaron
Age : 40
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18310
Merit : 239

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 7:41 pm

So the sound is more like a repeating knock.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
Back to top Go down
http://www.cardomain.com/ride/657082/4
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 7:43 pm

can you explain please "Knock"??
Back to top Go down
AA
Administrator
avatar

Name : Aaron
Age : 40
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18310
Merit : 239

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 7:59 pm

There are different meanings for the term.

Spark knock is a sharp repetitive metallic noise caused by abnormal ignition, also called "ping" or detonation. It is common under heavy throttle when the engine is hot, or the air/fuel mix is running lean.

Rod knock is a pounding noise caused by worn rod bearings. It is most common at higher RPM. If this is your problem, sorry it's bad news. More on rod knock here:

http://www.supramania.com/forums/showthread.php?20486-Rod-Knock-Diagnosis-and-FAQ

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
Back to top Go down
http://www.cardomain.com/ride/657082/4
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 8:03 pm

ok thanks! but if the engine heat a little bit the pcm will run automaticaly the fuel mixture Lean
Back to top Go down
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 8:28 pm

http://www.youtube.com/watch?v=H1_goqYytHU and it's not sound like this :S
Back to top Go down
albertj
Guru
avatar

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 6698
Merit : 123

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 9:48 pm

sealk wrote:
ok thanks! but if the engine heat a little bit the pcm will run automaticaly the fuel mixture Lean

frank, maybe you can use a digital camera to post a movie clip with sound of your problem.

Albertj


Last edited by albertj on Wed Jun 02, 2010 9:51 pm; edited 1 time in total
Back to top Go down
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Wed Jun 02, 2010 9:49 pm

ok i'll do this on friday or maybe tomorow if I have the time
Back to top Go down
moldymac
Fanatic


Name : David
Age : 33
Location : CT
Joined : 2010-01-22
Post Count : 288
Merit : 19

PostSubject: Re: engine slam when hot   Thu Jun 03, 2010 10:14 pm

Take a look at this video of my Riviera when I first bought it. There was a real bad knock in the engine, you can hear the engine start and a very pronounced knock at minute 4:26. Does yours sound anything like this?
Back to top Go down
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Thu Jun 03, 2010 10:16 pm

where?
Back to top Go down
moldymac
Fanatic


Name : David
Age : 33
Location : CT
Joined : 2010-01-22
Post Count : 288
Merit : 19

PostSubject: Re: engine slam when hot   Thu Jun 03, 2010 10:35 pm

Whoops, sorry! A link would be helpful.
http://www.youtube.com/watch?v=UbdCVlRKNK0
Back to top Go down
sealk
Amateur


Name : frank
Joined : 2010-04-21
Post Count : 28
Merit : 0

PostSubject: Re: engine slam when hot   Thu Jun 03, 2010 11:04 pm

no that's not sound like this and it's not knocking when cold and never intense like that Only when hot. My car eating a little over the middle of the temp gauge and I found that the fans don't work and that's the reason why it knocking (fuel mixture too lean because it over eating). I changed my termistor and my fans are not work more. I checked the wiring diagram of the cooling fans and it show that I have 3 fan relay but I only found the #2 and #3 in the relay box my problem now are WHERE are the #1 cooling fan relay :S
Back to top Go down
Eldo
Expert
avatar

Name : Mark
Location : West Salem, Oregon... FINALLY
Joined : 2009-04-09
Post Count : 3014
Merit : 100

PostSubject: Re: engine slam when hot   Sat Jul 24, 2010 2:30 pm

This question has come up before... I believe Relay #1 is the gray one on the firewall, near the windshield wiper motor.

Also, there is a large Fan fuse in the underhood relay box, and a small one in the dashboard fuse box.
Back to top Go down
 
engine slam when hot
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» Service Honda, XR650R engine in a CRF450X like your CR500AFX
» LS Engine sourcing
» RCGF 45cc Petrol Engine
» Engine is missing / hesitating under load. Noticeable in 1,2,3 gears. Any ideas?
» Engine blocks recycle

Permissions in this forum:You cannot reply to topics in this forum
Riviera Performance ::   Supercharged 3800 Tech :: Series II Engine & Transmission-
Jump to: