Car loses power when accelerating

[Cratemaster]

My girlfriend has a 1997 Stratus with a 2.5 L v6. The problem is that while accelerating it sometimes will lose power like you took your foot is off the accelerator, it smooth too, not rough like the governor kicking in or anything.. Sometimes it goes into this state so long while moving it will basically coast to a stop and die (automatic transmission). Basically it feels like fuel is no longer sent to the injectors. When you try to start it back up, you have to turn it over for a long time to get it started and when it does start, it idles really rough and stalls after a few seconds. Now, when the engine is cold, it will run fine, but once it has been driven around for about ten to twenty minutes, it starts these problems. So, the fuel pump and pump relay, and TPS have been replaced by the dealer to try to solve this problem and basically they have ripped her off. It still has the same problem. Basically I've just jumped on to this bandwagon to try to fix it. I've been rebuilding my 3rd gen. camaro's carbureted v6 and right now I'm waiting for parts, but I know next to nothing about the electrical systems and sensors that are associated with MPFI engines so I'm hoping I can fix this on the side without messing around with chips or ECM tuning or what not. Her uncle, who is a mechanic, says he thinks it might be a MAP sensor, but I'd like to do some consulting before we go out spending my girlfriends money on more parts that we don't need.

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[01indigoR/T]

i would go to a muffler shop and see if your converter is plugged, the car will do that kinda thing when it is clogged, make sure all the o2 scensors are plugged in, pretty sure they are but anything that sends a reading to the computer that will change the amount of fuel the engine gets will throw it off if they are bad, but the check engine light usualy comes on for those. I would definatly have the cat converter checked, dealers dont usualy check them. hope this helps

[Dodge4SRT]

My 2005 Dodge Stratus just did the same thing to me today, I was going down the road and it lost all power and now won't start????????? Is there a way I can check some of this stuff out myself to figure out what is going on??? Thanks to anyone who can help.

[sumncguy]

TUNE-UP TROUBLE SHOOTING
Problem & Possible Cause Action Carbon Fouled Plugs Clogged Air Filter Replace Air Filter Incorrect Idle Speed Reset Idle Speed Faulty Ignition Wiring Replace Ignition Wiring Sticky Valves/Worn Valve Seal Check Valve Train Fuel Injection Operation Check Fuel Injection Wet/Oil Fouled Plugs Worn Rings/Pistons Overhaul/Replace Engine Excessive Cylinder Wear Overhaul/Replace Engine Plug Gap Bridged Combustion Chamber Carbon Deposits Clean Combustion Chamber Blistered Electrode Engine Overheating Check Cooling System Loose Spark Plugs Clean/Torque Plugs Over-Advanced Timing Reset Timing Wrong Plug Heat Range Install Correct Plug Melted Electrodes Incorrect Timing Reset Timing Burned Valves Replace Valves Engine Overheating Check Cooling System Wrong Plug Heat Range Install Correct Plug Engine Won't Start Loose Connections Check Connections No Power Check Fuses/Battery Loose/Worn Timing Belt/Chain/Gears Check Belt/Chain/Gears Engine Runs Rough Leaky/Clogged Fuel Injectors Repair Fuel Injectors Leaky/Clogged Fuel Lines Repair Fuel Lines Clogged Fuel Filter Replace Fuel Filter Incorrect Timing Reset Timing/Check Advance Faulty Plugs/Wires Replace Plugs/Wires Uneven Compression Overhaul/Replace Engine Poor Acceleration Incorrect Ignition Timing Reset Timing Leaky Valves Check Compression Component Failure Spark Arcing Replace Faulty Part Defective Pick-Up Coil Replace Pick-Up Coil Defective Ignition Coil Replace Ignition Coil Defective Control Unit Replace Control Unit Ignition Diagnosis By Scope Pattern All Firing Lines Abnormally High Retarded Ignition Timing Reset Ignition Timing Lean Air/Fuel Mixture Adjust Fuel Mixture High Secondary Resistance Repair Secondary Ignition All Firing Lines Abnormally Low Rich Air/Fuel Mixture Adjust Air/Fuel Mixture Arcing Coil Wire Replace Coil Wire Cracked Coil Replace Coil Low Coil Output Replace Coil Low Compression Check/Repair Engine Several High Firing Lines Fuel Mixture Unbalanced Check Fuel System EGR Valve Stuck Open Clean/Replace EGR Valve High Plug Wire Resistance Replace Plug Wire Cracked/Broken Plugs Replace Plugs Intake Vacuum Leak Repair Leak Several Low Firing Lines Fuel Mixture Unbalanced Adjust Fuel Mixture Plug Wires Arcing Replace Plug Wires Cracked Coil Arcing Replace Coil Uneven Compression Check/Repair Engine Faulty Spark Plugs Replace Plugs Cylinders Not Firing Cracked Distributor Cap Replace Cap Shorted Plug Wires Replace Plug Wires Mechanical Engine Fault Check/Repair Engine Spark Plugs Fouled Replace Plugs Carbon Track in Distributor Cap Replace Cap Hard Starting Defective Ignition Coil(s) Replace Coil(s) Fouled Spark Plugs Replace Plugs Incorrect Timing Reset Ignition Timing FUEL INJECTION TROUBLE SHOOTING
Problem & Possible Cause Action Cold Start Valve Inoperative Test Cold Start Valve Poor Vacuum/Electrical Connection Repair Connections Contaminated Fuel Test Fuel for Water/Alcohol Bad Fuel Pump Relay/Circuit Test Relay/Wiring Battery Voltage Low Charge/Test Battery Low Fuel Pressure Test Press. Regulator/Pump No Distributor Reference Pulse Repair Ignition System Coolant Temp. Sensor Defective Test Temp. Sensor/Circuit No Power To Injectors Check Injector Fuse/Relay Hard Starting Defective Idle Air Control (IAC) Test IAC and Circuit EGR Valve Open Test EGR Valve/Control Circuit Restricted Fuel Lines Inspect/Replace Fuel Lines Poor MAP Sensor Signal Test MAP Sensor/Circuit Engine Stalls During Parking Maneuver Check P.S. Press. Switch Rough Idle Dirty Fuel Injectors Clean/Replace Injectors Poor MAP Sensor Signal Test MAP Sensor/Circuit Intermittent Fuel Injector Operation Check Harness Connectors Erratic Vehicle Speed Sensor Inputs Harness Too Close to Plug Wires Poor O2 Sensor Signal Test O2 Sensor/Circuit Faulty PCV System Check PCV Valve and Hoses Poor Acceleration Weak Fuel Pump Replace Fuel Pump Dirty Fuel Injectors Clean/Replace Injectors Excessive Intake Valve Deposits Clean Intake System Poor High Speed Operation Low Fuel Pump Volume Faulty Fuel Pump/Filter Poor MAP Sensor Signal Test Speed Sensor/Circuit Acceleration Ping/Knock Faulty EGR System Check EGR Valve and Hoses Poor Knock Sensor Signal Test Knock Sensor/Circuit Poor Baro Sensor Signal Test Baro Sensor/Circuit Improper Ignition Timing Adjust Timing Engine Overheating Check Cooling System Poor Quality Fuel Use Different Fuel Carbon Build-Up Decarbon Engin

[sumncguy]

Hummm that was messy. Shoot me an email. Ill send ya something