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Could be a few things. But here are the obvious. Check for a vacuum leak around the intake. When you put the car into drive it starts putting strain on the engine, a vacuum leak will give it too much oxygen and cause a fuel mixture issue / reading.
If nothing wrong there, you may have a bad throttle position sensor. When you put the car into drive and it starts putting strain on the engine it will pull the idle down then the sensor will adjust it automatically. Hope this helps.
There is a switch in the airflow meter that keeps the fuel pump relay closed as long as there is airflow. With the meter unplugged, the pump should not run except when the key is turned to start. It would seem to me that you have a wiring issue. Try jumping the fuel pump relay so the pump runs whenever the key is on. (Remove the relay and jump the pump wire to the accessory wire--see top left diagram.) This defeats the safety feature but will keep the pump running.
Have the throttle sensor checked first and also ask your mechanic to check if the engine oil is contaminated. If the oil is contaminated they will need to clean the engine BUT Not with water! Your mechanic will advise. Good luck. had a similar problem for 2 months changed the air flow sensor, idle sensor before we found out the problem was engine contamination.
Failure of the air injection pump can cause the engine control system to go into "limp-in" or "reduced power" mode. This is because the air injection pump adds oxygen to the exhaust under certain driving conditions and will affect the oxygen sensor data, which is used to adjust your air/fuel ratio. When the air injection pump fails, the computer can no longer "trust" the oxygen sensor data because they will not be operating as expected for the driving conditions...thus, the computer switches modes to keep the engine running.
On the other hand, this only affects the PCM during the times when it should be in "closed loop". This should not have any effect on the engine during start-up because the engine is always in "open loop" during start-up.
I would be 1. Finding out why the air injection pump has failed and get it fixed, and 2. Scan your onboard computer network to see if there are any fault codes present that are either related or not related to the air injection pump. It sounds like you probably have more than one problem.
P0068 Symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Lack/Loss of power - Engine rough idle Possible causes - Large vacuum leak - Leaking air duct system - Mass Air Flow (MAF) poor electrcial connection - Manifold Absolute Pressure (MAP) poor electrcial connection - Faulty Mass Air Flow (MAF) sensor - Faulty Manifold Absolute Pressure (MAP) sensor - TP sensor not seated properly. - Faulty Throttle Position (TP) sensor. - Dirty throttle body When is the code detected? The Powertrain Control Module (PCM) monitors operation rationality check by comparing sensed throttle position to mass air flow readings P0068 DODGE Description The Powertrain Control Module (PCM) monitors a vehicle operation rationality check by comparing Throttle Position (TP) to Mass Air Flow (MAF) readings. If, during a self-test, the comparison of the TP sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a diagnostic trouble code is stored in continuous memory.
THE INTAKE AIR TEMPERATURE SENSOR IS MOUNTED IN THE INTAKE AIR HOSE OF THE AIR CLEANER .THE INTAKE AIR TEMPERATURE SENSOR IS INTEGRATED INSIDE THE MASS AIR FLOW SENSOR.SHOULD BE NO PROBLEM REMOVE.DISCONNECT ELECTRICAL CONNECTOR,THEN REMOVE THE MOUNTING SCREWS HOLDING IT IN PLACE.THEN REMOVE IT.TAKE THE OLD INTAKE AIR TEMPERATURE SENSOR WITH YOU TO THE AUTO PARTS STORE SO THEY WILL MATCH UP AND GIVE YOU THE CORRECT SENSOR.WHEN YOU INSTALL NEW SENSOR,YOU NEED A CODE SCANNER TO ERASE CODE TO TURN OFF CHECK ENGINE LIGHT.
look 214 is not a valid code for a 1995 escort, this is an OBD1 system. here is a list of trouble codes for this year of ford no matter the model.
You should find the diagnostic connector under your hood normally by the fender on the battery side. By just using your test light and a jumper wire, it will tell you what kind of problem you got.
KEY ON ENGINE OFF (KOEO) TEST Model years 1984-1995 all models of Ford 1. Make sure engine is fully warmed. If in doubt, run engine at 2000 rpm for 2 minutes. 2. Turn ignition off and wait 10 seconds for system to shut off. Make sure A/C is off and transmission is in Park (automatic) or Neutral (manual). 3. Hook up light and jumper (or a tester if you have one). Turn key to ON (do not start engine). Read the codes.
How to do it?
Example code 23: your test light should flash 2 long consecutive flashes followed by 3 short pulses.
Ford's common codes for OBD1 (vehicles made before 1995)
11 system pass 12 idle control fault 13 dc motor did not move 14 engine rpm signal fault or PIP circuit failure 15 eec processor or power to KAM interrupted 16 rpm to low to check oxygen sensor test or fuel control error 17 cfi fuel control system fault or rich/lean condition indicated 18 ignition diagnostic monitor (IDM) circuit failure 19 cylinder identification (CID) sensor input failure 21 engine coolant temperature (ECT) out of self-test range 22 manifold absolute pressure (MAP) sensor circuit out of range 23 throttle positioner sensor out of self-test range 24 air charge temperature (ACT) sensor out of self-test range 25 knock not sensed during dynamic response test 26 transmission fluid temperature out of self-test range 28 loss of primary tach, right side 29 insufficient input from vehicle speed sensor 31 egr positioner sensor below minimum voltage 32 egr positioner sensor below closed limit 33 throttle positioner sensor noisy/harsh on line 34 egr valve circuit out of self-test range 35 egr valve circuit above maximum voltage 38 idle track switch circuit open 39 axod torque converter or bypass clutch not applying properly 41 oxygen sensor circuit indicates system always lean 42 oxygen sensor circuit indicates system always rich 43 oxygen sensor out of self-test range 44 air injection control system failure 45 coil 1 primary circuit failure 46 coil primary circuit failure 47 4X4 switch is closed or oxygen sensor failure 48 coil primary circuit failure 49 electronic transmission shift error 51 engine coolant temperature sensor circuit open 52 power steering pressure switch circuit open 53 throttle position circuit above maximum voltage 54 air charge temperature circuit open 55 key power input to processor open circuit 56 mass air flow circuit above maximum voltage 57 axod circuit failure 58 idle tracking switch circuit fault 59 automatic transmission shift error 61 engine coolant temperature circuit grounded 62 converter clutch error 63 throttle positioner circuit below minimum voltage 64 air charge temperature circuit grounded 65 charging system over voltage 66 mass air flow sensor circuit below minimum voltage 67 neutral/drive switch circuit open 68 transmission fluid temperature over temperature range 69 transmission shift error 70 data circuit communication link circuit failure 71 message center circuit circuit failure 72 insufficient manifold absolute pressure (MAP) change during dynamic response test 73 insufficient throttle positioner (TPS) change during dynamic response test 74 brake on/off (BOO) circuit open 75 brake on/off (BOO) circuit closed 76 insufficient air flow output change during test 77 brief wide open throttle not sensed during test 78 power interrupt detected 79 a/c on/defrost on during self test 81 map has not changed normally 82 super charger bypass circuit failure 83 OIC-low speed fuel pump relay circuit failure 84 egr vacuum regulator (EVR) circuit failure 85 canister purge circuit failure 86 shift solenoid circuit failure 87 fuel pump circuit failure 88 electro drive fan circuit failure 89 transmission solenoid circuit failure 91 no oxygen sensor switching detected 92 shift solenoid circuit failure 93 throttle positioner sensor input low 94 torque converter clutch solenoid circuit failure 95 fuel pump secondary circuit failure 96 fuel pump secondary circuit failure 97 transmission indicator circuit failure 98 electronic pressure control circuit failure 99 eec has not learned to control idle
Ok, there are many issues here that you will need to inspect. I recommend changing the fuel filter and pump as well. this will fix the hesitation. the intake and exhaust manifold gaskets will need to be replaced as well. this will stop the backfiring.
I also recommend checking and running a teat on the PCV valve and inspect the PCV hose as well. it could have a leak or a small crack on it.
Check the air filter and change if needed. this will help with acceleration issues as well. Next, i would run a check on all plugs and the complete wire set as well. change if needed.
Inspect the injectors for leaks and lose wires. make sure they are in good condition. replace any injectors that isn't firing properly.
Ok, there are some sensors that you will need to check as well. i will list them below.
SENSOR CHECK LIST--
1. Check the O2 sensors for worn wires. 2. Check the MAFS(Mas Air Flow Sensors) Check for Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit. 3. Check the Air Cleaner Temperature Sensor. this sensor could be damaged ro have loose wires. check accordingly. 4. Check the Throttle Position Sensor. this device could be connected wrong or it may be faulty as well. replace if needed.
Be sure and inspect all the above and repair any problem spot you ruin across during your inspection.