Question about Chevrolet Corvette

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I have a 78 vette and when fully accelerated from dead stop it lays rubber that bogs down like a flat spot and then I let up on accelerator and it runs smooth even when I floor it at 30 miles an hour. Don

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Somethings to check; fuel pressure at higher RPM's, distributor centrifical weights and springs. Other thing to consider is a weak coil.

Posted on Oct 14, 2010

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Posted on Jan 02, 2017

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2 Answers

I get s flat spot upon stepping on the accelerator, it is petrol engine and has a carburetor(no its EFI)


it has no CARB,
carbs ended here in 1994

scan the pcm ! first.
it will tell you , the reason.
the errors from the Trottle body or the 4 TPS sensors
2 in TB body motor.
2 under rigth foot
if 1 disagrees, PCM goes to limphome and is weak power.


you can NOT fix or diagnose any modern car
lacking a scan tool.

you cant.
hesitation is misfire
and has over 50 causes.

why would I guess.
I won't'
scan it and tell us the bad news.

these words posted here like over 10,000 times
ever do a search.

Feb 25, 2016 | 2006 Suzuki Forenza

1 Answer

What causes bog down when accelerating?


Car bogs down when I accelerate !!! - Car Forums and Automotive ...

www.automotiveforums.com > ... > Cavalier > Cavalier Problem Diagnosis
I have a 1994 Cavalier 4cyl and it bogs down and struggles when I come from a dead and try to accelerate and sometimes when I get upto 55-60 mph it does it ...

Sep 26, 2015 | 2001 Pontiac Grand Prix

1 Answer

98 sebring 2.5l bogs down or loses power when accelerating. Timing shows to be on #5 at tdc. Any ideas?


FLAT SPOT? have the engine checked over, maybe get a compresssion tester and check cylinders are all good and have similar compression?
Might be nothing serious but probably needs some thourough investigation as soon as possible.

Jun 15, 2015 | 1998 Chrysler Sebring

2 Answers

Starts missing /large dead stop when accelerating


The missing while accelerating is likely due to ignition coils and/or spark plugs going bad. The missing while in park is a normal thing. The car has a rev limiter that will not allow the engine to rev to higher than 3000 RPM while in park.

Apr 11, 2014 | Lincoln LS Cars & Trucks

1 Answer

2002 grand cherokee-4.0-acceleration problems--bogs down


ENGINE BOGGING DOWN ON ACCELERATION.COULD BE FAULTY TPS SENSOR.STOPPED UP FUEL FILTER AND STOPPED UP FUEL INJECTORS.

Jan 24, 2011 | 2002 Jeep Grand Cherokee

1 Answer

1992 jeep wrangler with faulty acceleration. It


It is possibly the O2 sensor. I had some issues with early 90's 4.0 liters where the O2 sensor would stick rich under heavy acceleration and would cause it to lean out and bog down. It felt like a rochester four barrel flat spot on an old chevy. I hope this helps.

Apr 30, 2009 | 1992 Jeep Wrangler

1 Answer

Acceleration problem


Throttle position sensor possibly

Nov 30, 2017 | 1998 Chrysler Sebring

2 Answers

Flat Turbo Transition


Go to pelicanparts.com go to the 911 tech area for great help.

Jim

Jul 05, 2008 | 1987 Porsche 911

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