 |
 |
 |
|
|
 |
| Search | Car Forums | Gallery | Articles | Helper | Quality Dog Food | IgorSushko.com | Corporate |
 | | ||
| |
|
| Latest | 0 Rplys |
|
|||||||
 |
 Show Printable Version |  Email this Page | 
Subscribe to this Thread
|
|
|
Thread Tools |
05-24-2009, 09:20 PM
|
#1 | |
|
AF Newbie
Join Date: May 2009
Location: Doylestown, Pennsylvania
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Motor Loss of Power
2000 Astro Van
4.3Liter Vortec V6 It used to hesitate and engine code P0300 : multi cylinder missfire. The the radiator cracked and it over heated. When it started to overheat, also it started to lose power. Not sure if the overheating is connected to the loss of power. It started to loose power gradually, at this point I can hold the pedal down to the floor and barely get moving. It sounds like it's starving for air or fuel... Replaced:
Checked Cylinder Compression. All 6 are at 200+psi Checked Fuel Pump Pressure; it's at about 60psi at Ignition On position Checked if the Intake Manifold gasket is leaking, it's not Checked vacumme pressure, it seems fine. Air filter is ok. |
|
|
|
|
05-25-2009, 05:29 PM
|
#2 | |
|
AF Enthusiast
Join Date: Oct 2003
Location: Husker Nation
Posts: 1,219
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
Does the catalytic converter glow red when this happens. Sounds like it might be plugged....
__________________
CD 1991 W41 #142 1989 Caprice 9C1 1997 C1500 1997 Bonnie SE 1998 Olds 98 LS Recently updated: http://forums.b-body.org |
|
|
|
|
|
05-26-2009, 08:07 PM
|
#3 | |
|
AF Newbie
Thread starter
Join Date: May 2009
Location: Doylestown, Pennsylvania
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
I don't think that it glows red because it acts the same when the motor is cold or warmed up.
|
|
|
|
|
|
05-26-2009, 08:09 PM
|
#4 | |
|
AF Newbie
Thread starter
Join Date: May 2009
Location: Doylestown, Pennsylvania
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
computer read code P0102 Mass Airflow Sensor Low Input. I swapped the MAS and nothing changed.
|
|
|
|
|
|
05-28-2009, 09:14 PM
|
#5 | |
|
AF Newbie
Thread starter
Join Date: May 2009
Location: Doylestown, Pennsylvania
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
How to check for clogged CatConverter?
|
|
|
|
|
|
06-08-2009, 01:14 PM
|
#6 | |
|
AF Newbie
Thread starter
Join Date: May 2009
Location: Doylestown, Pennsylvania
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
Thanks to everyone who helped out.
It was the clogged Catalytic Converter. Replaced with a Universal Fit CatConverter. Thanks again! |
|
|
|
|
|
05-25-2010, 12:59 PM
|
#7 | ||
|
AF Newbie
Join Date: May 2007
Location: Andover, New Jersey
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
Quote:
|
||
|
|
|
|
06-02-2010, 04:33 PM
|
#8 | |
|
AF Newbie
Thread starter
Join Date: May 2009
Location: Doylestown, Pennsylvania
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Motor Loss of Power
I used a Vacuume guage as pictured below. You can buy one from Auto Parts stores.
 http://www.harborfreight.com/fuel-pu...ter-93547.html I removed the driver's side Pre-Cat O2 sensor. I attached the rubber grommet through the O2 sensor hole. If you leave it there too long, it will burn the rubber grommet. Reading was over 4+psi at idle, and way off the scale (10+psi) at 2000rpm throttle rev. Based on the "How To Articles," stated the backpressure should not exceed 2.5 psi at 2000rpm rev. The Cat Canverter is clogged. Made sense. I cut out the CatConverter. The honey comb on input side was broken up in chunks, and the rest sure looked clogged up. |
|
|
|
|
|
|
POST REPLY TO THIS THREAD |
 |
|
|
