What does the waste gate do? - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 04-06-2010, 02:35 PM
Compression Ignition Addict

Join Date: Mar 2010
Location: Atchison, Kansas
Posts: 267
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What does the waste gate do?

I have 4 codes showing on my truck. Waste gate malfunction P1690 and Wastegate control valve performance(wastegate fail steady state test)P1249, P0640 Air intake heater, and finally P1670 No electronic feedback signal detected. I'm not sure what the wastegate does but I obviously want it to work properly. How do I test the air intake heater. Should it get warm when the glow plugs are warming. Can I feel it getting warm. Or should I just try replacing the relay. I have power on 3 of the posts on the relay when the key is on but the 4th post never gets juice. No electronic feedback signal, I have no clue. Any input out there?
Reply With Quote Quick reply to this message
Sponsored Links
Old 04-08-2010, 07:01 AM
Compression Ignition Addict

Join Date: Dec 2009
Location: Montgomery, TX
Posts: 539
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
First, your air intake heater is the device in the front of the x shaped pipe in front of the turbo. It only comes on in below zero weather, and its only purpose is to reduce smoking in those conditions. It is controlled by the relay next to your glow plug relay. Several places sell plugs to delete this device because it is considered unneccessary and blocks air flow through the intake. Unless you live on the border of Canada - I wouldn't pursue fixing it.

The wastegate is a protection device on the turbo that prevents overboost. It is set to allow venting of the exhaust during periods where the turbo output exceeds some preset number - usually 24-30 in the 7.3's. You may have gotten an overboost situation that set off the codes. Are you running any programmers?
Reply With Quote Quick reply to this message
Old 04-09-2010, 07:23 PM
Compression Ignition Addict

Join Date: Mar 2010
Location: Atchison, Kansas
Posts: 267
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews

No, I'm not running any programmers. I just bought this truck 45 days ago and haven't driven it much. I need to repair the transmission before driving it too much. I made the dealership take it to a mechanic to scan the truck before buying it to see what came up. Those codes came up which I mentioned on the original thread. The mechanic said the PO had something in it becuse it had been pluggged into a port on the drivers floorboard next to the E-brake. He said if the screw was gone, which it was, he said someone probably had some sort of chip in it. The truck is exceptionally clean for 211,000 miles. Just some minor blems that need attention. When it was 10 degrees out when I bought the truck, I started it without it being plugged in and it started but it was real rough until it warmed up, so maybe a GP or all of them are bad. The GP solenoid is working but when I remembered that code about the AIH I thought maybe solenoid for it was out or the heater itself was bad. Anyway, I had the mechanic clear the codes before driving it 10 hours home and the only codes that came back are P1249 Wastegate control valve performance and P0741 TC clutch system performance/stuck.
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 06:59 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.