Question about Doug Thorley 2003 Toyota Tundra - 3.4L V6, without smog fittings - Headers

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Won't accelerate, engine bogs down

Check engine light solid,

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Car looses power, bogs down check engine flashes rapidly. No acceleration, then 15 - 30 seconds later power comes back and check engine light goes solid and stays on for 2 or 3 days.Anyone with idea?


You should read check engine code.
It tells you more than you can guess.
You can buy quality $1000 snap-on OBD scanner or $30 cheap one.
$30 will do good job. (you need to google after car tells you error code because cheap scanner shows only code but not meanings in plain English)

or you can visit local autozone and ask them read code for free.
unless you ask car itself, nobody will be accurate.

Dec 02, 2015 | 2003 Mazda Protege

1 Answer

What would cause my 1990 chevy cheyenne to bog down while accelerating ?


The idle air control valve only controls idle speed.
The most common causes are restricted exhaust or air intake, or low fuel pressure.
Is the check engine light on ?

Oct 03, 2015 | Cars & Trucks

1 Answer

Why does my vehicle bog down when I accelerate from a start?


Try a different machine to read the codes then post a reply ,i have no idea what could cause this on this engine as remember that anything over 1.6/2.0 litre is regarded as a big negine here in europe ,most i work on are under 1.2 ,but if its not accelerating from idle then i would suspect a vacumn leak to one of the sensors but not having much practical experiance then i couldnt say exactly

Oct 21, 2014 | Cars & Trucks

1 Answer

Reduced engine power code on dash


if you have a check engine light on check the codes first.

Dec 02, 2012 | 2003 Cadillac Escalade

1 Answer

95 gmc sierra won't hold steady rpm


Sounds like wiring problems with the engine harness.
The oil pressure not working could cause the hard starting problem.
The idle problem could be a faulty idle air control valve or a vac leak.
I would start with the check engine light and find out what the codes are.

Oct 04, 2012 | 1995 GMC Sierra

3 Answers

Would an idle control valve cause a car not to accelerate?


no, idle air control valve is literally to control your idle speed.
what happen when you press on gas? car shakes, RPM goes up, or engine just bogs down?

Mar 09, 2010 | 2004 Infiniti I35

1 Answer

Check engine light and dead end throttle


can be anything need to be scanned auto store such as auto zone and advanced auto do it for free to get the trouble code

Sep 30, 2009 | 1998 Jeep Wrangler

1 Answer

Bogs down upon acceleration


You have coil over spark plug ignition and one of your coils is bad.You need to find the bad coil and replace it.

Aug 27, 2009 | Toyota Camry Cars & Trucks

1 Answer

Check engine light comes on & engine bogs down


you need to have it scanned for codes

Nov 10, 2008 | 1995 Toyota 4Runner

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