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Is this a fuel problem??

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  #1  
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Jim
 
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Default Is this a fuel problem?? - 08-13-2006 , 08:21 AM







Any suggestions??I hope someone can help me!
I have an older 1993 Canadian Chrysler Fifth Avenue, front wheel drive
with 3.8 litre engine.
I was on the highway at around 100 kph (60mph), when it suddenly lost
power. Giving it gas made the engine cut out. I pulled over, and
limped it to a telephone by pumping the heck out of the accelerator.
This gave me walking speed on the shoulder of the road.
A friend towed it home (I live in a small country town), and we tried
to fix it by putting in a gas line filter, as this seemed to be the
trouble. Didn't work.
The only mechanic in town came over and tried different things,
including putting in another electronic unit that I don't know the
name of, but the spark plug wires plug into it, like the older coils
did. Maybe it's STILL called a coil?? The spark was weak with the
earlier one, but now there is lots of power to the spark, but the
problem still exists.
He tried unplugging what he called the MAP sensor, and it seems to
idle better, but still isn't running right.
A week ago I had another gas tank installed, with a new fuel pump
assembly, but there is lots of pressure at the fuel filter, and it has
been running fine until now. There hasn't been any other symptoms
until now, and the car has gone 7-800 kms since the gas tank was
replaced.
So...there is fuel...there is lots of spark...engine is getting air.

Still the engine 'bogs down' when you give it gas. It idles OK.

Any suggestions????


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  #2  
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cselby@mts.net
 
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Default Re: Is this a fuel problem?? - 08-13-2006 , 11:44 AM







Quote:
A week ago I had another gas tank installed, with a new fuel pump
assembly, but there is lots of pressure at the fuel filter, and it has
been running fine until now. There hasn't been any other symptoms
until now, and the car has gone 7-800 kms since the gas tank was
replaced.
So...there is fuel...there is lots of spark...engine is getting air.

Still the engine 'bogs down' when you give it gas. It idles OK.

Any suggestions????

Clue here is the fuel tank and pump. Bad connections at the pump,
failing pump when it heats up, bad pressue regulator at the fuel rail,
faulty fuel pump relay. Time to pressure test the fuel system.

Pete


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  #3  
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Jim
 
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Default Re: Is this a fuel problem?? - 08-13-2006 , 04:34 PM



Thanks for the come-back, Pete.

Since I posted my message, I poked around the net and found out how to
read the computer codes without any electronic equipment, by turning
the ignition on and off and on and off and leaving it on, then
counting the 'engine light' flashes.

It told me that codes 12, 14, 24 and 51 had problems.

It's list told me that 12 is nothing to worry about (computer has been
'disconnected' recently), but 14 was regarding the MAP sensor, 24
regarding the Throttle Position Sensor and 51 says the Oxygen Sensor
was stuck at lean, probably caused by a defective MAP Sensor.

Unless they are a lot of money, I'm going to try changing the MAP
Sensor when the stores open tomorrow.

If that fails, I'll get it to a garage for a pressure test of the fuel
system, as you suggested.

Am I wasting my time changing the MAP sensor first? Time off work is
VERY important to my family.

Thanks again, Pete.

On Sun, 13 Aug 2006 16:44:19 GMT, cselby (AT) mts (DOT) net wrote:

Quote:
A week ago I had another gas tank installed, with a new fuel pump
assembly, but there is lots of pressure at the fuel filter, and it has
been running fine until now. There hasn't been any other symptoms
until now, and the car has gone 7-800 kms since the gas tank was
replaced.
So...there is fuel...there is lots of spark...engine is getting air.

Still the engine 'bogs down' when you give it gas. It idles OK.

Any suggestions????


Clue here is the fuel tank and pump. Bad connections at the pump,
failing pump when it heats up, bad pressue regulator at the fuel rail,
faulty fuel pump relay. Time to pressure test the fuel system.

Pete


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  #4  
Old   
Mike Perkins
 
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Default Re: Is this a fuel problem?? - 08-13-2006 , 09:46 PM



Have you checked the EGR valve ? and vacuum leaks ?

Jim wrote:

Quote:
Thanks for the come-back, Pete.

Since I posted my message, I poked around the net and found out how to
read the computer codes without any electronic equipment, by turning
the ignition on and off and on and off and leaving it on, then
counting the 'engine light' flashes.

It told me that codes 12, 14, 24 and 51 had problems.

It's list told me that 12 is nothing to worry about (computer has been
'disconnected' recently), but 14 was regarding the MAP sensor, 24
regarding the Throttle Position Sensor and 51 says the Oxygen Sensor
was stuck at lean, probably caused by a defective MAP Sensor.

Unless they are a lot of money, I'm going to try changing the MAP
Sensor when the stores open tomorrow.

If that fails, I'll get it to a garage for a pressure test of the fuel
system, as you suggested.

Am I wasting my time changing the MAP sensor first? Time off work is
VERY important to my family.

Thanks again, Pete.

On Sun, 13 Aug 2006 16:44:19 GMT, cselby (AT) mts (DOT) net wrote:


A week ago I had another gas tank installed, with a new fuel pump
assembly, but there is lots of pressure at the fuel filter, and it has
been running fine until now. There hasn't been any other symptoms
until now, and the car has gone 7-800 kms since the gas tank was
replaced.
So...there is fuel...there is lots of spark...engine is getting air.

Still the engine 'bogs down' when you give it gas. It idles OK.

Any suggestions????


Clue here is the fuel tank and pump. Bad connections at the pump,
failing pump when it heats up, bad pressue regulator at the fuel rail,
faulty fuel pump relay. Time to pressure test the fuel system.

Pete


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  #5  
Old   
Jim
 
Posts: n/a

Default Re: Is this a fuel problem?? - 08-14-2006 , 03:04 PM



Thanks for the suggestions, Mike!
How do you check the EGR valve?
Don't hear any vacuum leaks, but it's hard to tell when the engine
won't idle consistantly.

On Mon, 14 Aug 2006 02:46:29 GMT, Mike Perkins <mperk96 (AT) gte (DOT) net>
wrote:

Quote:
Have you checked the EGR valve ? and vacuum leaks ?

Jim wrote:

Thanks for the come-back, Pete.

Since I posted my message, I poked around the net and found out how to
read the computer codes without any electronic equipment, by turning
the ignition on and off and on and off and leaving it on, then
counting the 'engine light' flashes.

It told me that codes 12, 14, 24 and 51 had problems.

It's list told me that 12 is nothing to worry about (computer has been
'disconnected' recently), but 14 was regarding the MAP sensor, 24
regarding the Throttle Position Sensor and 51 says the Oxygen Sensor
was stuck at lean, probably caused by a defective MAP Sensor.

Unless they are a lot of money, I'm going to try changing the MAP
Sensor when the stores open tomorrow.

If that fails, I'll get it to a garage for a pressure test of the fuel
system, as you suggested.

Am I wasting my time changing the MAP sensor first? Time off work is
VERY important to my family.

Thanks again, Pete.

On Sun, 13 Aug 2006 16:44:19 GMT, cselby (AT) mts (DOT) net wrote:


A week ago I had another gas tank installed, with a new fuel pump
assembly, but there is lots of pressure at the fuel filter, and it has
been running fine until now. There hasn't been any other symptoms
until now, and the car has gone 7-800 kms since the gas tank was
replaced.
So...there is fuel...there is lots of spark...engine is getting air.

Still the engine 'bogs down' when you give it gas. It idles OK.

Any suggestions????


Clue here is the fuel tank and pump. Bad connections at the pump,
failing pump when it heats up, bad pressue regulator at the fuel rail,
faulty fuel pump relay. Time to pressure test the fuel system.

Pete


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