Have 2000 tiburon told it needed egr valve that told that year does not have one it runs than its stop sit for awile tham state back up but getting worst so I parked it any ideas

hook up to car with a reader then push erase it will clear all codes the car will probebly shut down but will start rite back up

now Hyjacked and no year , country or engine told so generic answer. is the prize.
LOTS OF CAUSES. NO ENGINE TOLD OR COUNTRY SOLD TO.
1: IAC OR isC idle valve stuck , need to be cleaned.
2: EGR valve stuck open, causes stalls.
3: or worse , cam belt slipped or engine bad (compression test fails)
not told does engine have full power driving heck not told, or you can drive at all, (a #1 goal of any car)

it needs service,

My 2000 Bonneville did the exact same thing. It's the mass flow air sensor I'm almost 100% sure this is what your problem is.

After you have made the repairs go back to Advance Auto and have them remove this stored trouble code .Most places will remove them from your computer for free.

when theses mechanics looked at your car was it running what was it doing before it stoped running was the check engine light coming on need more info thanks

EGR VALVE SIT ON TOP INTAKE MANIFOLD IT HAS A SMALL PIPE RUNNING IN EXHAUST MANIFOLD.

Correct - NO EGR valve.

EGR movement limited/blocked by carbon.

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Check for

vacuum leaks on intake manifold,

the air tube between the air filter.

intake manifold vacuum hose.

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clean throttle plate with Berryman carburator cleaner

SEE sample picture HERE
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Also remove carbon built up behind the EGR valve and the EGR passage tube.

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Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.

More un-metered air (leaks) will lean out the fuel mixture.

Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.

At idle,just spray and listen for the RPM surge.

The in-rush of carb clearer will increase the RPM on the motor.

Record the problem spot(s) and address it later.

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EGR carbon built up require 2+ hours to clean from start to finish.

You will need a new EGR base gasket before your start.

Locate and remove the EGR valve after the vehicle is cool down.

Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.

Remove the EGR valve.

Inspect the location of the carbon built-up inside the valve and the EGR passage tube.

SOAK these areas with WD-40 spary.

You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.

RE-SOAK the carbon and let it sit for over-night will also help.

One the last round,pass a shop vacuum of the EGR valve and the passage pipe.

Install the new EGR gasket and connectors.

Allow the vehicle to warm up outdoor to burn up any remaining WD-40.


Take it for a test drive.


Please rate my answer if it's useful to you.


Cheers,

Mustgo

A freind is gue$$ing at your cost! you have a engine light on go have it scaned with OBD 2 find out wht the problem is then fix save big$$$$ don't gue$$

I'm assuming that it is a four cyl.The p0401 code is for insufficient egr flow.Most of the time it is the egr vsv valve (vsv means vacuum switching valve)which is what controls the vacuum to the egr valve to open it.It is kind of hard to get to as it is on the block under the head on the back side.If you follow the hose from the egr valve it goes to the vsv.I have also seen mice eat holes in the vacuum line which would also give you problems.I hope this help and let me know if you have anymore questions