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Mackenzie79

Macken ... 10/8/2019

2005 Volkswagen Golf GTI 1.8T 4 Cyl 1.80L

Engine

Is there a choke mode that protects the engine, turbo

I have a mk5 golf gti tfsi 2.0l.When i start the engine from cold. I pull off and there is a hesitation that is brief and then all is well. It is showing no dash lights and no faults. Changed many parts to no avail. Under load only from cold it hesitates like getting no fuel for 2/3seconds there is nothing then it comes to life with no issues.

7 Answers


Jimm

Jimm 10/8/2019

No choke mode per se, recommend to have the OBD system scanned for free - at any local auto parts stores - to retrieve any stored fault codes.

What are the specific parts replaced and diagnosis / tests performed so far?

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Mackenzie79

Mackenzie79 10/9/2019

Hi, so far I've changed the PCV, plugs, coolant temp sensor, dv valve and I've had an engine flush and oil change. I've changed the oil and fuel filters and have an injector treatment currently in the fuel. I've also cleaned the idt, map and maf sensors.

I've noticed today that if I wait for the idle to drop from cold to where it settles there is no problem. This takes 30-60seconds. I guess I can live with that. The problem is I can't just turn the key and go without it bogging down for 2-3secs.(only from cold)

Ive had it scanned with my local mechanic and showed no faults. I've read that they have a `choke mode' to obviously protect the engine but I've had turbo cars in the past without this issue.


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Jimm

Jimm 10/9/2019

Nope, there is no 'choke mode' - however with fuel-injected and computer controlled engines, there is a slightly richer mixture and higher idle speed - when the engine is cold.

When the MAP sensor becomes clogged, you'll notice a decrease in fuel economy, hard acceleration, stalling, rough start in cold weather and it just feels heavy on the pedal.

Remove and place the MAP sensor in a ziploc plastic bag filled with rubbing alcohol. Gentlly shake the bag to agitate and remove all the dust and debris.

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0
Jimm

Jimm 10/9/2019

Nope, there is no 'choke mode' - however with fuel-injected and computer controlled engines, there is a slightly richer mixture and higher idle speed - when the engine is cold.

When the MAP sensor becomes clogged, you'll notice a decrease in fuel economy, hard acceleration, stalling, rough start in cold weather and it just feels heavy on the pedal.

Remove and place the MAP sensor in a ziploc plastic bag filled with rubbing alcohol. Gentlly shake the bag to agitate and remove all the dust and debris.

Reply
0
Jimm

Jimm 10/9/2019

Nope, there is no 'choke mode' - however with fuel-injected and computer controlled engines, there is a slightly richer mixture and higher idle speed - when the engine is cold.

When the MAP sensor becomes clogged, you'll notice a decrease in fuel economy, hard acceleration, stalling, rough start in cold weather and it just feels heavy on the pedal.

Remove and place the MAP sensor in a ziploc plastic bag filled with rubbing alcohol. Gentlly shake the bag to agitate and remove all the dust and debris.

Reply
0
Jimm

Jimm 10/9/2019

Nope, there is no 'choke mode' - however with fuel-injected and computer controlled engines, there is a slightly richer mixture and higher idle speed - when the engine is cold.

When the MAP sensor becomes clogged, you'll notice a decrease in fuel economy, hard acceleration, stalling, rough start in cold weather and it just feels heavy on the pedal.

Remove and place the MAP sensor in a ziploc plastic bag filled with rubbing alcohol. Gentlly shake the bag to agitate and remove all the dust and debris.

Reply
0
Mackenzie79

Mackenzie79 10/9/2019

Thankyou, I've already cleaned the map sensor and there are no other symptoms.

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