![SEARCH](http://www.mustangworks.com/images/search.png)
![The Mustang Works](http://www.mustangworks.com/images/mw_footer_logo.gif)
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
![]() |
#1 |
Registered Member
Join Date: Jun 2002
Location: SC
Posts: 6
|
![]() I have a 92 mustang LX 5.0. I have lost about 50% ofmy HP. Here are the things I have checked:
I have checked the Idle Air controller, TPS, Wires, plugs, Distributer, cap, Rotor, and the fuel pressure regulator. Here is how the car is acting: When the engine is cold, it pops back through the intake and has absolutly no power. When it warms up, it idles fine and runs a little better, but if I give it 50 % or more throttle it boggs down. I have the timing set on 14 degrees and getting spark knock even running 93 octane. If I turn the timing down to the stock 10 degrees, I loose the spark knock but it has less HP than a 4cyl. engine. I have checked the timing with #1 cyl. to 0 degrees on the balancer and was dead on the money. Anyone who has any ideas or solutions please reply. Thanks |
![]() |
![]() |
![]() |
#2 |
Conservative Individualist
Join Date: May 1997
Location: Wherever I need to be
Posts: 7,487
|
![]() Possible Mass Air malfunction.
I suggest you either buy a code scanner or have the engine scanned at a shop in order to find the specific problem. A malfunction that causes that much power loss will throw codes and then you'll know where to look for a fix instead of flailing around and guessing. |
![]() |
![]() |
![]() |
#3 |
Registered Member
Join Date: Jun 2002
Location: SC
Posts: 6
|
![]() Thanks for your reply. I checked the codes and everything turned out clean.
The power does vary at given times. Sometimes it runs at about 75% and sometimes it runs at 25%. I gave an average of 50%. I have exhaused all of my ideas.... Is there a possibility that my timing chain has slipped a tooth? As I mentioned previously, I did make sure that I had the #1 cly in-line with the 0 degree mark on the balancer. Thanks for your help |
![]() |
![]() |
![]() |
#4 |
Registered Member
Join Date: Jun 2002
Location: SC
Posts: 6
|
![]() Is there a way to check the mass air flow without buying a new one?
|
![]() |
![]() |
![]() |
#5 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
|
![]() Sounds like a broken valve spring to me. Might wanna check that.
Later,
__________________
92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
loss of power suddenly | jimdrechsler | Windsor Power | 17 | 09-30-2004 08:49 PM |
power loss! spark? fuel? help!!! | CHRIS GARRISON | Windsor Power | 0 | 09-11-2002 02:02 PM |
I have a loss of low end power after PIH conversion, please help!! | Green9550 | Windsor Power | 4 | 09-09-2002 04:04 PM |
Loss of Power | 88fivepointoh | Windsor Power | 6 | 09-08-2002 12:29 PM |
power loss??? | white99cobra121 | Blue Oval Lounge | 3 | 07-04-2001 06:45 PM |