Welcome to Mustang Evolution.
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05-07-2006, 07:22 PM
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#1
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Im so fed up... please help.
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
Posts: 12,414
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It seems like I cant keep this POS running right for more than a week at a time. Here's the deal... My car seems to miss at high RPMs, or just while under WOT in general. So far Ive replaced the coil, cap, rotor, wires & plugs about 12k miles ago with autolite copper plugs. The wires are 8mm wires, nothing fancy. Ive had problems like this in the past and replaced the coil and it seemed to cure the problem for a while, now its back. I replaced the coil again and it didnt really help... so I need to figure out what the underlying problem is. I havnt changed anything on the car to make it start doing this, it just does. Timing is set at 13* i believe. What happens is when I just go straight to WOT, it feel like the car almost boggs, the tach will jump around, and it just wont feel right. Once I get into 3rd and 4th gear and take it up to 4500-5000 RPMs, the RPMs will skip real fast straight to 6k but it doesnt feel like im being "propelled" during that last 1k RPMs because it happens so quick. Its hard to describe, but thats the best I can do... anyone have anything they can suggest? Im so tired of all this crap constantly happening when I really take good care of the car with maintenance and everything. Please help.
I think tomorrow Ill try cleaning my TPS and MAF sensors just for piece of mind. Ive cleaned the MAF in the past 10k miles, but the TPS hanst been touched since I bought the car. TPS is on the throttle body correct? Can I clean it without actually removing it from the TB or does it need to be taken off? Tomorrow Im also going to pull the plugs and make sure they all look ok on the electrodes. Besides that, anyone have any other tips?
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-Mike
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05-07-2006, 07:25 PM
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#2
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Re: Im so fed up... please help.
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#2 (I Wish I Could Lope Like A tC)
Join Date: Apr 2006
City: Pineville/Alexandria
State: Louisiana
Posts: 1,265
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im not sure... all i can say is check the plugs....but i dont know much so when u find out let me know so i will know the next time
__________________
(Project "TORQUE")
Mods - Off Road H w/ Flowmaster 40s and 3" x 22" Tips, Shiftkit, Shorties, and 4.10s
Soon to come - UDPs, Off Road X-Pipe, A/T Cooler, and 03' Cobra Rims
Club - Tha Crew Leader of Muscle Car Division
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05-07-2006, 08:13 PM
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#3
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Re: Im so fed up... please help.
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94 Mustang GT(cobra)
Join Date: Apr 2006
City: Jacksonville
State: Florida
Posts: 35
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Hey Zimstang. I assume you have a 5speed in the car, since its a Cobra. How many miles on it anyways? Why I ask, is that it might be your clutch telling you that it might be due to be changed. Just an idea to throw out there. |
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05-07-2006, 08:21 PM
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#4
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Re: Im so fed up... please help.
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
Posts: 12,414
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80k miles... but when I throw it in 4th or 5th driving around, and then get on it, it wont rev up real high, then catch and rev back down like a classic slipping clutch. 
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-Mike
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05-07-2006, 10:05 PM
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#5
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Re: Im so fed up... please help.
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^needs more bondo
Join Date: Sep 2003
City: Modesto
State: California
Posts: 9,600
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run some seafoam through it before changing the plugs out(cause after teh seafoam theyre more than likely going to be screwey anyways)
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-Thomas-
2003 Redfire Cobra - 448whp/435wtq
1990 Eclipse GSX - possibly For Sale (Will fund cobra's clutch and IRS mods!)
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05-07-2006, 10:09 PM
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#6
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Re: Im so fed up... please help.
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Eyes So Tight I Pass For An Asian
Join Date: May 2003
City: Huntsville
State: Alabama
Posts: 27,308
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Welcome to my world Zim. Fix one thing... some other shit breaks. |
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05-07-2006, 10:28 PM
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#7
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Re: Im so fed up... please help.
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Registered User
Join Date: Mar 2006
City: San Antonio
State: Texas
Posts: 291
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So, is the car bucking when at these said rpms? Like the engine has a miss? |
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05-07-2006, 10:30 PM
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#8
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Re: Im so fed up... please help.
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
Posts: 12,414
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Yeah, seems like it anyway... the tach gets really jumpy and doesnt smoothly rev.
__________________
-Mike
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05-07-2006, 11:27 PM
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#9
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Re: Im so fed up... please help.
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Registered User
Join Date: Mar 2006
City: San Antonio
State: Texas
Posts: 291
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When my tach started acting up my TFI module was going out.I know your module is in a different location than mine but it could be the cause. |
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05-07-2006, 11:29 PM
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#10
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Re: Im so fed up... please help.
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
Posts: 12,414
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whats TFI stand for?
Also, its not just the tach... you can feel the engine struggling at certain points (or whatever it is struggling)
__________________
-Mike
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05-08-2006, 12:28 AM
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#11
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Re: Im so fed up... please help.
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#2 (I Wish I Could Lope Like A tC)
Join Date: Apr 2006
City: Pineville/Alexandria
State: Louisiana
Posts: 1,265
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may have something to do with the fuel...mine had a problem when it got to high rpms and i changed my fuel filter and i changed my pump too and havent had a problem
__________________
(Project "TORQUE")
Mods - Off Road H w/ Flowmaster 40s and 3" x 22" Tips, Shiftkit, Shorties, and 4.10s
Soon to come - UDPs, Off Road X-Pipe, A/T Cooler, and 03' Cobra Rims
Club - Tha Crew Leader of Muscle Car Division
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05-08-2006, 12:49 AM
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#12
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Re: Im so fed up... please help.
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
Posts: 12,414
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im getting a lot of people saying it might either be the clutch, a bad injector, failing fuel pump, or clogged filter. I changed the filter right when I got the car about a year ago. My little brother ran it bone dry of gas at one point, but I wouldnt think a filter that's as new as it is would fail because of that... plus it drove fine for a while, then just started doing this. How do i check for a bad injector or tell if my fuel pumps failing?
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-Mike
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05-08-2006, 07:15 AM
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#13
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Re: Im so fed up... please help.
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Registered User
Join Date: Mar 2006
City: San Antonio
State: Texas
Posts: 291
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05-08-2006, 09:36 AM
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#14
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Re: Im so fed up... please help.
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LS THIS
Join Date: May 2006
City: bristol
State: Tennessee
Posts: 520
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my 96 was doing that i know its a different motor 4.6 but anyway it was my fuel pump was going out and wasn't giving engine the fuel it needed....might check that good luck |
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05-08-2006, 09:53 AM
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#15
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Re: Im so fed up... please help.
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Eyes So Tight I Pass For An Asian
Join Date: May 2003
City: Huntsville
State: Alabama
Posts: 27,308
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If the Fuel pump is stock it is worth looking into..... |
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05-08-2006, 10:34 AM
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#16
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Re: Im so fed up... please help.
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Teh TC6!
Join Date: Aug 2005
City: Sheppard AFB
State: Texas
Posts: 3,972
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That would expain why at WOT you start to have problems, the pump can't keep up with the demand. You don't have an excess of miles on it, but just the age will make it deteriorate. Before you do that however, run some Lucas fuel sys cleaner first. If you have a clogged injector that will clean those out and your problem is fixed without having to buy a $150 pump.
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Bewst!? 
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05-08-2006, 11:15 AM
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#17
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Re: Im so fed up... please help.
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WTF^^...
Join Date: May 2003
City: Hoover / Florence
State: Alabama
Posts: 27,240
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get a wideband on a dyno see if the a/f is off
__________________
2003 REDFIRE COBRA #3938 of 5082 @ 05/27/2003 1 of 414
MGW Shifter, Stingers, JLT, SS Inserts, MM FLSFC & CC Plates, SS Lines, H&R Race springs, IRS Brace, MRT Hood Struts
ME.com Member #29 - 400rwhp/380rwtq
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05-08-2006, 11:26 AM
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#18
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Re: Im so fed up... please help.
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Eyes So Tight I Pass For An Asian
Join Date: May 2003
City: Huntsville
State: Alabama
Posts: 27,308
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I would get it dyno tuned first and then go from there... can see exactly what your fuel is doing like SpectorV said. |
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05-08-2006, 11:35 AM
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#19
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Re: Im so fed up... please help.
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
Posts: 12,414
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Ill probably end up changing the pump anyway since Ill be supercharging it this summer... Im thinking a 255lph will be plenty, and Ill run that fuel system cleaner too and see if that helps out. When changing a pump, all you do is unstrap the tank, drop it down... then what? Im getting low on gas, so Ill probably run it until Im scared its out of gas to keep things on the lighter side. I have a jack so Ill just lower it down using that. How do I make sure the filler tube doesnt get caught up when I lower the thing down?
__________________
-Mike
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05-08-2006, 11:36 AM
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#20
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Re: Im so fed up... please help.
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