Question about 1993 Ford Escort 4 Door

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Coolant temp sensor,TPS,Intake Air temp sensor,Transmission Fluid Temp sensor are all pulling highvoltage codes I've checked them all they are fine so I changed the computer and it didnt work Any suggestions

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Your Sensors are losing ground tap into the ground for all sensors and run a new ground back to the battery negative :-" to ground all sensors.

Posted on Nov 14, 2010

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V10 cranks but will not start. If I use starting fluid it will start and stay running. Any ideas?


The coolant temperature sensor is failing. Usually the engine will be slow to start the first time. Turn it off and it will start normally. sometimes will not start cold. There are two sensors one for the gauge and one to the computer that meters fuel to the injectors. This one is located near the thermostat housing has a two wire connector (19MM deep well socket to remove)

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without actually hooking up a scan tool and looking at the pid data i would say you have either a coolant temp sensor issue or intake air temp sensor issue.i have seen alot more coolant temp sensors bad than the intake air temp sensors tho.

Feb 17, 2013 | 1996 Jeep Grand Cherokee

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Buick 2002 lesabre- stalls 1 or 2 a week and starts up.nothing shows in diagnostic code. stalls when slowed or stopped


Have you had it to a shop that has a professional type scan tool that can view engine sensor data parameters ? Do you know what those are ? Idle air control counts , mass air flow sensor data , MAP sensor , TPS - throttle position sensor , crankshaft position sensors , Cam sensors , engine coolant temp , intake air temp etc......

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Ok it seems to me like you may have to do some electrical checks, perhaps some voltage checks/drops in order to find out. For the P0118 you could use your scanner provided it can read live data. Look at the coolant temp snsr (cts or ect) and read its value it should read close to intake air temp snsr (IAT) value. The unplug the sensor value should change drastically and go negative. The jump the Two terminals and temperature should go high. If it does you've you've eliminated the circuit and the sensor it faulty. Make sure you have 5v reference as I said before you may have to voltage drop the circuit to make sure you're not loosing any voltage and that the circuit is intact. Good luck! Here are some links with more info and possible causes. http://www.obd-codes.com/p0118 http://www.obd-codes.com/p0507

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1 Answer

Hoe to fix Chrysler 300M: 99 30m Chrysler have the codes po700,po734,po733,po122,po113,po108


codes PO700, PO733, PO734 are all transmission codes all have to do with inproper outputshaft speed could be a bad outut shaft sensor but most likely the transmission is slipping, and that is not good if the transmission is shipping you will need to replace it, but try chaning the fluid and filter and and see if that does not take care of the problem.

code PO122 is the TPS sensor, code PO108 is the MAP sensor the MAP sensor can set the TPS code but the TPS can not set the MAP code so i would start with the MAP sensor ..... code PO113 is the intake air temp. sensor check the wiring on the top of the engine to make suer there is not a bad spot in the harness if all looks good then replace the sensor, but the way all 3 sensors use a commoin ground circuit so check the wiring before you replace any of the sensors......good luck

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3 Answers

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Apr 13, 2009 | 1993 Pontiac Grand Prix

1 Answer

Car keeps dying


Trouble Code 33 and 34 are the MAF/MAP Sensor Circuit. It sounds like you've replaced that sensor already. Did you also have the code 34 before putting in the new sensor?
Or did this code start after it's replacement? Any other codes appearing?

Troubleshooting it would depend if it has the Speed Density Update. The dealer should be able to provide that info.

Here's your fault code list:

13 oxygen sensor circuit 14 coolant temp sensor circuit (high temp) 15 coolant temp sensor circuit (low temp) 21 throttle position sensor (TPS) circuit (high signal) 22 throttle position sensor (TPS) circuit (low signal) 23 manifold air temp (MAT) circuit (low temp) 24 vehicle speed sensor (VSS) circuit 25 manifold air temp (MAT) circuit (high signal) 31 wastegate solenoid electrical circuit 32 exhaust gas recirculation (EGR) circuit 33 mass air flow (MAF) circuit (gm/sec high) 34 mass air flow (MAF) circuit (gm/sec low) 41 cam sensor circuit 42 C3I EST or bypass circuit failure 43 electronic spark control (ESC) circuit 44 oxygen sensor circuit (lean exhaust) 45 oxygen sensor circuit (rich exhaust) 51 PROM error 52 calpak error 55 ECM error

Aug 07, 2008 | 1989 Buick Regal

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