5.0 bogging down at full throttle

sharkattack91 · April 15th, 2011, 09:17 AM

So this problem just came out of no where; around town the car drives fine but if I want to change lanes, climb a hill or go on the thruway my car completely falls on it's face. At full throttle the car bogs down and I start to smell unburned gas. The engine light comes on time to time and that's when the car runs it's worse and the gas fumes are the worst. I changed the TPS and the car ran perfect...for about a day..and then the problem came back. Before I change any more parts I need some suggestions what it could be. Thanks fellas

sharkattack91 · April 15th, 2011, 09:18 AM

**I also cleaned the MAF with that electronic cleaner and that made no difference**

ARMY93LX · April 15th, 2011, 09:35 AM

running into similar problems with mine.
Check the timing. Change the Fuel filter.
when was the last tune up?

sharkattack91 · April 15th, 2011, 01:39 PM

I tuned it up about a month ago, I did cap, rotor, plugs, fuel filter as well as oil change. It idles fine, just when you go to mat it, the car just falls right on its face. I'll check the timing though

95tbirdv8 · April 15th, 2011, 03:13 PM

have you checked your air filter

sharkattack91 · April 15th, 2011, 07:30 PM

Yeah air filter is replaced also

electricblue87 · April 16th, 2011, 12:40 AM

Sounds like a spark issue, check your coil and take out a plug and see what it looks like.did you gap them?

sharkattack91 · April 21st, 2011, 10:56 PM

I was at the Swap Meet at Englishtown raceway last weekend and I came across a brand new MAF and Jet chip for $85. I put them both in Monday morning and the car ran GREAT until....an hour ago. I'm right back where I started. I can't recall gapping them but I will check tomorrow.

Crazyj949 · April 24th, 2011, 02:31 AM

I think its one of your sensors. I had a very similar experience in my car and it turned out to be a very simple cam shaft sensor. Try finding out why the checkengine light goes on before you think about buying any more parts, or flooring the stang any more. Im curious to know what it is, good luck!

sharkattack91 · April 24th, 2011, 10:40 PM

yeah thats what i'm doing next, I'll keep u posted

April 15th, 2011, 09:17 AM	#1
sharkattack91 Newbie 89 Mustang LX Join Date: Oct 2010 Location: new york Posts: 21 iTrader: 0 reviews	5.0 bogging down at full throttle So this problem just came out of no where; around town the car drives fine but if I want to change lanes, climb a hill or go on the thruway my car completely falls on it's face. At full throttle the car bogs down and I start to smell unburned gas. The engine light comes on time to time and that's when the car runs it's worse and the gas fumes are the worst. I changed the TPS and the car ran perfect...for about a day..and then the problem came back. Before I change any more parts I need some suggestions what it could be. Thanks fellas

April 15th, 2011, 03:13 PM	#5
95tbirdv8 Enthusiast 1990 mustang gt Join Date: May 2010 Location: houston, tx Posts: 627 iTrader: 0 reviews	have you checked your air filter __________________ Burning Rubber in the 5.0 http://www.youtube.com/watch?v=mKGSmRkKQcM95 95 mark8 lsc 95 tbird v8 90 mustang gt 07 silverado v8 08 yamaha r6 to be continued........ foxbodyperformance.com is the way to go

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April 15th, 2011, 09:18 AM	#2
sharkattack91 Newbie 89 Mustang LX Join Date: Oct 2010 Location: new york Posts: 21 iTrader: 0 reviews	I also cleaned the MAF with that electronic cleaner and that made no difference

April 15th, 2011, 09:35 AM	#3
ARMY93LX Newbie 1993 MUSTANG LX 5.0 NOTCH unknown at this time Join Date: Apr 2011 Location: Ft. Bragg Posts: 14 iTrader: 0 reviews	running into similar problems with mine. Check the timing. Change the Fuel filter. when was the last tune up?

April 15th, 2011, 01:39 PM	#4
sharkattack91 Newbie 89 Mustang LX Join Date: Oct 2010 Location: new york Posts: 21 iTrader: 0 reviews	I tuned it up about a month ago, I did cap, rotor, plugs, fuel filter as well as oil change. It idles fine, just when you go to mat it, the car just falls right on its face. I'll check the timing though

April 15th, 2011, 07:30 PM	#6
sharkattack91 Newbie 89 Mustang LX Join Date: Oct 2010 Location: new york Posts: 21 iTrader: 0 reviews	Yeah air filter is replaced also

April 16th, 2011, 12:40 AM	#7
electricblue87 Newbie 87 MUSTANG GT 12.87@107 Join Date: Dec 2009 Location: NEW YORK Posts: 42 iTrader: 0 reviews	Sounds like a spark issue, check your coil and take out a plug and see what it looks like.did you gap them?

April 21st, 2011, 10:56 PM	#8
sharkattack91 Newbie 89 Mustang LX Join Date: Oct 2010 Location: new york Posts: 21 iTrader: 0 reviews	I was at the Swap Meet at Englishtown raceway last weekend and I came across a brand new MAF and Jet chip for $85. I put them both in Monday morning and the car ran GREAT until....an hour ago. I'm right back where I started. I can't recall gapping them but I will check tomorrow.

April 24th, 2011, 02:31 AM	#9
Crazyj949 Look Ma! My First Post! Join Date: Apr 2011 Posts: 1 iTrader: 0 reviews	I think its one of your sensors. I had a very similar experience in my car and it turned out to be a very simple cam shaft sensor. Try finding out why the checkengine light goes on before you think about buying any more parts, or flooring the stang any more. Im curious to know what it is, good luck!

April 24th, 2011, 10:40 PM	#10
sharkattack91 Newbie 89 Mustang LX Join Date: Oct 2010 Location: new york Posts: 21 iTrader: 0 reviews	yeah thats what i'm doing next, I'll keep u posted

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