Re: 440 cuts out on hard excelleration
[Re: Jupiter331]
#2416378
12/10/17 07:40 PM
12/10/17 07:40 PM
|
Joined: May 2003
Posts: 96,649 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
|
Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,649
On The Boat, On The Lake, Wa. ...
|
The carb is adjusted correctly?
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
|
|
|
Re: 440 cuts out on hard excelleration
[Re: Jupiter331]
#2416383
12/10/17 07:48 PM
12/10/17 07:48 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
Run it up to the same RPM in your driveway & mash the throttle & see if you have an immediate accel pump squirt/& of sufficient duration. there would not be the same (fuel) demand as on the road but it'd be a VG start especially to see how the AP is acting. & in your driveway with your light hooked up, floor it & see if it stops blinking. Holler back.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: 440 cuts out on hard excelleration
[Re: DarrenS]
#2416846
12/11/17 05:23 PM
12/11/17 05:23 PM
|
Joined: Aug 2003
Posts: 43,095 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,095
Bend,OR USA
|
A bad ground to one of the electrical components could act that way. I chased one of those for a bit a while ago... Check the connections on all the slide on electrical connectors for corrosion Higher RPM demands more current to fire the coil and ECU which can lead to high resistance connection going open like a switch turned off Higher heat from more current flow has more resistance Something on the ignition side is going open when held at WOT under a load long enough to create this problem I've seen this before years ago on a race car that was stored inside from PA
Last edited by Cab_Burge; 12/15/17 02:32 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: 440 cuts out on hard excelleration
[Re: cuda66318]
#2418591
12/14/17 06:38 PM
12/14/17 06:38 PM
|
Joined: Jan 2004
Posts: 4,561 Motor City
6PKRTSE
master
|
master
Joined: Jan 2004
Posts: 4,561
Motor City
|
I had that issue once in one of my Chargers under hard acceleration once in a great while it would just cut out like you turned off the ignition. It turned out to be the bulkhead connector in the firewall. Engine torque must have pulled on the engine harness just enough to cause the issue. Once I figured it out pulled everything apart, cleaned all of the connections, dielectric greased all of the connections & put it back together. Been good ever since.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
|
|
|
Re: 440 cuts out on hard excelleration
[Re: 6PKRTSE]
#2418954
12/15/17 01:13 PM
12/15/17 01:13 PM
|
Joined: Aug 2006
Posts: 2,495 God's Country Maryland
GODSCOUNTRY340
top fuel
|
top fuel
Joined: Aug 2006
Posts: 2,495
God's Country Maryland
|
Fuel slosh as stated above. On hard acceleration gas in the front bowl will slam back toward the metering plate and vent tube. It will run up the vent tube and into the carb causing a massive bog, just like shutting the engine off for a second. Here's a pic of the cure, a hose connecting the front & rear tubes. This keeps the fuel from dumping into the primaries fixing your problem. Smart drag racers figured this out years ago.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
|
|
|
Re: 440 cuts out on hard excelleration
[Re: GODSCOUNTRY340]
#2418962
12/15/17 01:27 PM
12/15/17 01:27 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
^^^ & iirc you cut a notch in the hose at the top of the curve for venting.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: 440 cuts out on hard excelleration
[Re: Jupiter331]
#2418965
12/15/17 01:29 PM
12/15/17 01:29 PM
|
Joined: Aug 2006
Posts: 2,495 God's Country Maryland
GODSCOUNTRY340
top fuel
|
top fuel
Joined: Aug 2006
Posts: 2,495
God's Country Maryland
|
Yes, you can see the notch in the top of the hose.
Last edited by GODSCOUNTRY340; 12/15/17 01:37 PM.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
|
|
|
Re: 440 cuts out on hard excelleration
[Re: Jupiter331]
#2434053
01/13/18 08:08 PM
01/13/18 08:08 PM
|
Joined: Jan 2004
Posts: 169 orange city,FL
Demon340GSS
member
|
member
Joined: Jan 2004
Posts: 169
orange city,FL
|
I agree with 6PKRTSE.. Please check the bulkhead connection at the Firewall First... Then Check your ECU... My car did it at the track and another racer came over and we found the connection was poor and burnt. I repaired it and on the next run my car screamed like never before. I too changed everything you did. Even tried different carbs, You name it. Turned out to be simple connections at the bulkhead. Many racers bypass the factory harness connectors and run a independent wire through. Years later at the track a guy running a 4 speed Duster launched his car and it died. After getting it towed back I remembered what happened to me and went over and offered the advise. He checked it and the chassis had flexed enough the wires where not touching! repaired and it fired right up. Before this he said it did the same as you described.. Just my input on this. Of course check your ECU too... Grant Eaton.
Owner of Original collector and restored original mopars from Mr Norms Grand Spaulding Dodge.
|
|
|
|
|