Will not start after installing new throttle body

Tiny
TYESHA
  • MEMBER
  • 2006 SUZUKI FORENZA
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I have put on a new throttle body and now my car will not start. Help please
Do you
have the same problem?
Yes
No
Sunday, March 17th, 2019 AT 4:04 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

First, confirm that everything was reinstalled correctly. Here are the directions specific to your vehicle for replacement. Read through them to make sure you didn't miss anything. The attached pictures correlate with the directions.

________________

THROTTLE BODY REMOVAL AND INSTALLATION
Throttle Body Removal and Installation

Removal

1. Disconnect the negative battery cable.
2. Disconnect the intake air temperature (IAT) sensor connector.
3. Disconnect the breather hose from the valve cover.

Picture 1
4. Remove the air intake tube.
5. Disconnect the vacuum hoses from the throttle body.
6. Disconnect the Electric Throttle Control (ETC) connectors.
7. Disconnect the coolant hoses from the throttle body.

Picture 2
8. Remove the throttle body retaining nuts.

Installation

CAUTION: Use care in cleaning old gasket material from machined aluminum surfaces. Sharp tools may damage sealing surfaces.

1. Clean the gasket mating surface on the intake manifold.
2. Clean the throttle body.
3. Install the throttle body assembly with a new gasket to the intake manifold.

Picture 3
4. Install the throttle body retaining nuts.
Tighten: Tighten the throttle body retaining nuts to 10 Nm (89 in. lbs.).

5. Connect the ETC connector.
6. Connect the coolant hoses to the throttle body.
7. Connect the vacuum hoses to the throttle body.
8. Install the air intake tube.
9. Connect the breather hose to the valve cover.
10. Connect the IAT sensor connector.
11. Connect the negative battery cable.

Picture 4

12. Fill the cooling system.

_______________________________________

If everything is correct, we need to confirm the engine is getting spark and fuel. The easiest way to do this is to simply see if it will start for a couple seconds using starting fluid.

However, here are a few links that may help you check:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

One last question. Was the vehicle running prior to replacement of the throttle body?

Let me know,

Joe
Was this
answer
helpful?
Yes
No
Sunday, March 17th, 2019 AT 8:30 PM
Tiny
TYESHA
  • MEMBER
The car was running but turned off in my drive way and wouldn't crank back up. It was driving hard with jerking and not getting enough acceleration.
Was this
answer
helpful?
Yes
No
+1
Monday, March 18th, 2019 AT 12:33 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

What determined the throttle body was bad? It could be an issue with the fuel pressure, ignition. Have you scanned the computer for trouble codes? Based on your description, it sounds like it wasn't getting fuel. Since it now cranks and doesn't start, take a look through this link. It discusses the most common causes of a crank no start condition.

https://www.2carpros.com/articles/car-cranks-but-wont-start

What I would like for you to do is check if the engine is getting spark and fuel. Here are links that show how to check:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system

You can follow the links to check or simply do this. See if it will start for a couple seconds if you use starting fluid. It if does, then we know it is fuel related. If it still doesn't start, chances are there is no spark and it is ignition related.

Here are a couple links you may find helpful when checking for spark:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Here are the manufacturer's specs for fuel pressure:

Fuel Pressure .................... 379-393 kPa (55-57 psi)

Let me know what you find.

Take care,
Joe

Was this
answer
helpful?
Yes
No
Monday, March 18th, 2019 AT 5:11 PM

Please login or register to post a reply.

Recommended Guides