Question about 1995 Mercury Cougar

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Car idles fine but will "choke" when accelerator is pushed.

The throttle position sensor, fuel filters and cadallidic converters have been replaced and/or cleaned out. Don't know where to locate the fuel sensors to replace them. That may not even be the problem; please help and send an email if you know what this could be!!!!! thx. have a new job and will be starting monday june 8th 2009 :(

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  • 9 Answers

Mass Air Flow Sensor VERY VERY COMMON.

Posted on Jun 04, 2009

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1 Answer

Acts like it isn't getting fuel, chokes out


Hello,

Do you have an engine light? Throwing a code?
Just does this at idle or when driving/acceleration?
Acting strange changing symptoms (E.G.--idle to acceleration to black smoke out exhaust, etc.)? Plenty of Gas in tank?

I am thinking: No engine light
Clog in fuel filter
intermittent fuel pump problem
A vehicle starting sensor (E.G.--Throttle Position Sensor (TPS))
Main computer
Engine Light: Pull Code
Sensor

I hope this helps.

Sep 05, 2014 | 2002 Chrysler PT Cruiser

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I've got a 1996 jeep grand Cherokee with the 5.2 v8 fuel injected Holley throttle body. My problem is while driving at soft or low acceleration it accelerates fine, but if you hit the throttle hard it


I would check the voltage on the throttle portion sensor with the engine off from idle to wide open throttle.If there are any dead spots, replace the sensor. If the tps checks out, you should check fuel pressure. If you have good fuel pressure, you may want to make sure there isn't a lot of slack in your timing chain. I don't believe you mentioned the mileage of your vehicle. Best of luck.

May 03, 2014 | 1996 Jeep Grand Cherokee

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1998 Honda Civic EX AT. Okay, I just had the timing belt and another IACV replaced. Error code 14 (IACV) light is out, the SRS light is out, CEL is out. The car idles fine. The only problem I have now is...


Your excellent description provides a very short list of possible culprits, since your vehicle's symptoms all appear during periods of higher fuel demand.

(1) fuel filter - clogged - your description is absolutely classic (especially stumbling upon uphill acceleration) for a fuel filter in need of replacement.
(2) spark plug wire - one or more bad - an engine can muddle along while traveling over level terrain with one cylinder intermittently failing to fire, but try to go uphill (even the slightest grade), and the engine will skip badly and can even stall if asked to accelerate.
(3) in-tank fuel strainer - clogged - same symptoms as clogged fuel filter.

The fuel strainer is a sock-like pre-filter attached to the input side of the in-tank fuel pump.

The troubleshooting section of the 1998 Honda Civic EX manual states:

Priority Action Part Type Cause
1 Inspect Throttle Position Sensor - Faulty or Incorrectly Connected Throttle Position Sensor.
2 Inspect Mass Air Flow Sensor - Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
3 Inspect Choke - Stuck or Improperly Functioning Choke.
4 Inspect Air Cleaner Tempature Sensor - Damaged or Faulty Air Cleaner Tempature Sensor.
5 Inspect Fuel Filter - Clogged or Dirty Fuel Filter.
6 Inspect PCV Valve - Plugged or Damaged PCV Valve.
7 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.
8 Inspect Fuel Injector - Dirty or Worn Fuel Injectors.
9 Inspect Hose (PCV) - Clogged or Collapsed PCV Hoses.
10 Inspect Fuel Pump - Faulty Fuel Pump.
11 Inspect Fuel Pump - Low Fuel Pressure.

Here's a YouTube video describing hoe to replace a fuel filter on a 2000 Honda Civic (the closest I could find for your 1998).

Oct 18, 2011 | Cars & Trucks

3 Answers

1993 Geo Prism idles fine, but won't accelerate. If you perform a WOT it falls flat on its face (like starving for fuel) fuel pressure is good. But if you bring the throttle in very, very slowly it will...


Several possibilities there; first I suggest scanned the ECU to read some fault code stored there; this action could learn us if the codes are present while engine is in and idle in real time.

Other thing that you need to check is the fuel pump pressure, need to be 13psi range all time, the other possibiliti is the TPS (Throttle Position Sensor).

Also, you may just have a vacuum leak, a vacuum guage would show it, but so would the scan tool.

Finally, test and check transmission, discart us some torque converter problem and checking the transs fluid levels.

Keep us updated.

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2 Answers

Idles fine. won't accelerate. checked catylictic converter,egr, plugs new,fuel pressure 60 psi.


if your car doesn't even rev up then the accelerator isn't hooked up to the motor. You can check this on the carburetor will be where you can rev it up and if that works then your accelerator is broken inside the car

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My 1999 nissan maxima has a rough idle and some time dies at idle


It may be throttle position sensor or camshaft sensor. Most likely the throttle sensor.

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1 Answer

Fuel/accelerator problems. dies when accelating or at idle. runs when accelerator held in one position for a short while.


CHECK THE IDLE SPEED SENSOR, UNPLUG IT AND SEE IF THE VEHICLE REVS UP A BIT. IF IT DOES, THEN REPLACE IT. ALSO CHECK THE FUEL PUMP RELAY IN THE FUSEBOX. HOPE THIS HELPS. .LET ME KNOW. GOOD LUCK

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No power accelerating or going up a hill


HAVE SOMEONE CK THROTTLE POSITION SENSOR AND CATALYTIC CONVERTER MAKE SURE EXHAUST IS CLEAR

Jan 10, 2009 | 1996 Pontiac Grand Am

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