RE: {Chrysler 300} 300B Stumbling at 60+ MPH

Manifold heat control valve on RH side must be free to fully open when exhaust gets hot enough.

Missing our C300 which has moved on to a different world.

Rich Barber in HOT, HOT, HOT (for this are anyhow) Brentwood, CA 40 miles ENE of San Francisco.

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of BRIAN WALKER
Sent: Sunday, August 6, 2023 9:53 AM
To: Ron Waters <ronbo97@xxxxxxxxxxx>; 'Chrysler 300 Club International' <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: RE: {Chrysler 300} 300B Stumbling at 60+ MPH

Hi Ron,

Feels like it is holding back and has a slight sputtering sound. That said, it has never stalled. The motor was rebuilt back around 2014-15.

Thanks,

Brian

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of Ron Waters
Sent: Saturday, August 5, 2023 20:09
To: 'Chrysler 300 Club International' <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: RE: {Chrysler 300} 300B Stumbling at 60+ MPH

Brian –

Does it feel like it’s holding back, or are you stepping on the accelerator, but nothing is happening ? Has it ever stalled at high speed ? How many miles on the engine and is it original or has it been rebuilt ?

Ron

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx On Behalf Of bwalk05
Sent: Saturday, August 05, 2023 12:15 PM
To: Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} 300B Stumbling at 60+ MPH

Hello Everyone,

Anyone have any suggestions for troubleshooting Carter adjustments (or otherwise) for a car that stumbles beyond 60 mph. It starts up fine, idles smooth, accelerates strong up to 60 mph and then stumbles...even at fully open throttle.

I suspect there is an accelerator pump issue or secondary is not opening under vacuum. Any thoughts/suggestions would be greatly appreciated!

Thanks,

Brian W.

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