Question about 2005 Skoda Octavia 1.9

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Slow pick up

I clean inlet manifold,throttle body,diesel and air filter but the pickup is still not so good

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  • g4ran Mar 18, 2014

    open the bonnet on the drivers side by the wing is the pipe that comes from the egr valve with the bonnet open rev the engine and see if both sides of the pipe suck into the middle if so it could well be your turbo that is the problem you would notice the car using more oil than normal

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.


Posted on Oct 26, 2012

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1 Answer

Throttle body sensor location 2005 uplander


the sensor is part of the throttle body and not replaceable here is the throttle body replacement instructions as you will have to replace the entire throttle body it is a very common issue with these
THROTTLE BODY ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE
  1. Remove the air cleaner intake duct.
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  1. Disconnect the electronic throttle control (ETC) electrical connector (1) from the throttle body (2).
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  1. Remove the heater pipe nut at the throttle body.
  2. Remove only the heater inlet pipe.
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  1. Remove the nuts and the bolts from the throttle body.
  2. Remove the throttle body assembly.
  3. Remove the throttle body gasket.
  4. Clean and inspect the throttle body gasket mating surfaces.
NOTE: Do not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.

Use care in cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as sharp tools may damage the gasket surfaces.

INSTALLATION PROCEDURE
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  1. Install a new gasket, if necessary.
  2. Install the throttle body assembly.
  3. Install the throttle body nuts and the bolts.
NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the nuts and the bolts to 10 N.m (89 lb in) .
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  1. Install the heater inlet pipe.
  2. Install the heater pipe nut to the throttle body.
Tighten the nut to 25 N.m (18 lb ft) .
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  1. Connect the ETC electrical connector (1) to the throttle body (2).
  2. Install the air cleaner intake duct.

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Very poor acceleration for up to about 6 seconds from 1st & 2nd gears but then okay. More prominent from cold. Engine Management light not on but suspect Mass Air Flow Sensor? - 1.9 Diesel Space Star -...


If you have verified it's an engine problem, not a transmission problem-by noting the same slow response when car is stationary and in park or neutral-then possible the MAF sensor. Clean it with a can of MAF sensor cleaner. If the throttle body is dirty inside, clean that with crc brand cleaner, a throttle body intake cleaner. Check or replace the air filter. If the hesitation is still there, it might be the throttle position sensor. And if still not it, scan for trouble codes and check fuel pressure. Good luck.

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You do not state the age of the car or the type or the size of engine or whether it is petrol or diesel. On older E class models a fault in the over voltage protection relay would cause cars to be very jerky in idle. In general on petrol models I would start with the throttle body. Remove the air ducting between the air filter cleaner and the throttle. Make sure the interior of the throttle, the throttle plate and throttle area behind the throttle plate is really clean. Ensure that all all air ducting joints and vacuum lines to the inlet plenum are free of any leaks. On some engine variants the cam sensor oil seal over time can fail allowing oil to contaminate the electrical connection. Thoroughly cleaning the socket and replacing the 'o' ring usually fixes this. On diesels (3.2 CDi etc) the EGR feed pipe from the exhaust manifold around the back of the engine to the inlet manifold can become clogged with soot. Push a frayed bit of hand brake cable through it to clean it; clamping the cable in a drill chuck can make for a very effective flexible interior wire brush around pipe pipe corners etc. Any further information you can provide as per the opening statement would help in the diagnosis

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  2. Check your spark plugs and HT leads are in good condition and not worn, reset gaps. If worn replace them.
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