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1996 chev, caprice 5.7L eng. coolant problem.over heating have checked ECT unpluged key on -40 deg. with jumper +300 Deg. Have 4.99 volt at elect connector

No power at fan at 200 Deg. jump from battery and bother of them work,back track to relays. can jump at fuse block and thay come put in new relays. Fan still dont come and gets hotter than you know where.

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  • Chevrolet Master
  • 2,620 Answers

With the switch on take coolant temp sensor connector off and take a wire and jump the 2 prongs on the inside of the connector and if the fan comes on then replace the coolant temp sensor.

Posted on Nov 01, 2012

Testimonial: "Rick your help was very helpful and was on the money all the time. Thank you"

  • 3 more comments 
  • Norbert Stellpflug Nov 02, 2012

    Thanks rick. changed the ECT sensor with a new one,also has new fan relays, can make the fans come on by jumping from batt.,can jump relays and make fans come on all wires are good out side of PCM so we think it is time to replace PCM. What do you think. thanks Norbet

  • Ricky Peters
    Ricky Peters Nov 02, 2012

    Will it come on when you turn on the A/C?

  • Ricky Peters
    Ricky Peters Nov 03, 2012

    also before you change the PCM has anyone replaced the thermostat lately.

  • Norbert Stellpflug Nov 03, 2012

    Hi Rick. Yes the Thermostat has been changed,A/C dont work. Norbert

  • Ricky Peters
    Ricky Peters Nov 03, 2012

    Well Norbert if you have already checked the fan fuse and its good then it looks like a PCM change.

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Please help me with torque settings for chev utility 1.4 2012 thanks


if your engine code(suffix) is z14xep
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Whats the valve clearance for my Diahatsu Mira 1998 850cc?


Mira 847 cc 1993- Engine Code ED 10
Ignition data
  • Ignition system type: El-ecu
  • Ignition coil make/type: Dia/-
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  • Primary resistance: 1.35-1.65 Ohms
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  • Valve clearance - exhaust: 0.30 (hot)
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Oct 30, 2014 | 1996 Daihatsu Mira

1 Answer

Loss of power


Forenza 2004
this is a Suzuki, id sell it, and is not even real Suzuki its a badged
product. actual. Daewoo Lacetti
Daewoo can't sell cars here so suzuki tries and fails... amazing car.

p0217 means overheated.
and when overheated power is lost. stop that or burn up the engine.
do the service on engine, 60,000 miles. steps.
and a new thermostat. i bet yours is 10 years old,,huh and END of life.
non last over that.
id sell it. when fixed, Suzuki's are no good.

FSM data.
Trouble Code Conditions:
Engine is running. Engine coolant temperature is higher than 50 Deg C (122 deg F). Intake Air Temperature (IAT) is higher than 35 deg C (95 deg F). Engine soak time is higher than 360 minutes, or start-up coolant temperature is less than 45 deg C (113 deg F). Engine Coolant Temperature (ECT) sensor reading is greater than 107 deg C (224.6 deg F).
Possible Causes:
  • Sensor ECT
  • Circuit
  • ECM

the fsm skips bad thermostat. odd that... huh"?
and dead cooling fans.
and clogged radiator.
etc.
the first step is to see if it really is overheated, with a IR pyro gun.
if not, the ECT is bad
if is overheated, then fix that, as the ECT didnt lie.

simple , the sensor lied, (nah) or did overheat.

or air pockets at the ECT, low coolant actual.

Feb 23, 2014 | 2004 Suzuki Forenza

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2000 ramvan 1500 runs hot on highway, normal when idling


that motor has the common intake manifold gasket problem

Dec 04, 2012 | Cars & Trucks

1 Answer

Jetta 1996 p0117 code


Hi there:
DTC P0117 - Engine Coolant Temperature (ECT) Circuit Low Input
The ECT (Engine coolant temperature) sensor is a thermistor located in the engine block or other coolant passage. It changes resistance with changes in temperature of the coolant that it's in contact with. It's usually a two wire sensor. One wire is a 5 volt reference from PCM (Powertrain Control Module) and the other is a ground supplied from PCM.

As the temperature of the coolant changes, the resistance of the sensor changes. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a signal voltage lower than the normal operating range of the sensor then P0117 code will set.

Potential symptoms include:
MIL (Malfunction Indicator Lamp) illumination
Poor fuel economy
Poor drivability
Engine may run rough or blow black smoke out the tailpipe
May not idle
May start and then die

Potential causes of the P0117 code include:
Bad ECT sensor
Short to ground on ECT signal circuit
Faulty or damaged connectors
Wiring harness damaged
Loose terminals at ECT or PCM
POSSIBLY an overheated engine
Bad PCM

Possible Solutions:
Since this code is for an abnormally low signal to the PCM from the ECT, the PCM saw a excessively "hot" condition in the engine coolant. This could be due to faulty ECT sensor or wiring, but it could, conceivably, be caused by an overheated engine.So if your engine was overheated diagnose that first. Having said that here are the possible solutions:

Using a scan tool, with KOEO (Key on engine off) check the ECT reading on the display. On a cold engine the ECT reading should match the IAT (Intake Air Temperature) sensor reading. If it doesn't, replace the ECT sensor.

1. If the ECT reading is showing an excessively hot reading, for example more than 260 deg. F, then unplug the ECT sensor. This should cause the ECT reading to drop to the extreme cold reading (around -30 deg.F or so). If it does, replace the sensor, because it's internally shorted. If it doesn't change the reading, the check for a short to ground on the signal circuit of the ECT wiring. It could be that the two ECT wires are shorted to each other. Look for any chafing or melted wiring. Repair as necessary.

a. If you can't find any wiring problems and the ECT reading doesn't drop to the extreme coldest when unplugged, then, check for voltage coming out of the PCM on the signal wire's pin at the PCM connector. If there isn't any voltage, or it is low, then the PCM may be bad. NOTE: On some models it is possible for the 5 Volt reference signal to be temperarily shorted. This can happen if an engine sensor internally shorts the 5 Volt reference. Since the 5 Volt reference is a "shared" circuit on many models, this will cause it to be abnormally low. Usually, though this will be accompanied by several other sensor codes. If you suspect that may be the case, unplug each sensor until the 5 Volt reference reappears. The last sensor unplugged is the offending sensor. Replace and recheck the signal wire from the PCM connector

2. If the scan tool ECT reading seems normal at this time then the problem may be intermittent. Use a "wiggle" test to manipulate the wiring harness and connectors while watching the ECT reading on the scan tool. Repair any wiring or connectors that are loose or corroded. You could check the Freeze frame data if your scan tool has that function. It will show the ECT reading when the failure occurred. If it shows the reading to be at the hottest extreme then replace the ECT sensor and see if the code reappears.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jan 12, 2012 | 1998 Volkswagen Jetta

2 Answers

Code p117


P0117 - Engine Coolant Temperature (ECT) Circuit Low Input
The ECT (Engine coolant temperature) sensor is a thermistor located in the engine block or other coolant passage. It changes resistance with changes in temperature of the coolant that it's in contact with. It's usually a two wire sensor. One wire is a 5 volt reference from PCM (Powertrain Control Module) and the other is a ground supplied from PCM.

As the temperature of the coolant changes, the resistance of the sensor changes. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a signal voltage lower than the normal operating range of the sensor then P0117 code will set.


Potential symptoms include:
MIL (Malfunction Indicator Lamp) illumination
Poor fuel economy
Poor drivability
Engine may run rough or blow black smoke out the tailpipe
May not idle
May start and then die

Causes: Potential causes of the P0117 code include:
Bad ECT sensor
Short to ground on ECT signal circuit
Faulty or damaged connectors
Wiring harness damaged
Loose terminals at ECT or PCM
POSSIBLY an overheated engine
Bad PCM

Possible Solutions:
Since this code is for an abnormally low signal to the PCM from the ECT, the PCM saw a excessively "hot" condition in the engine coolant. This could be due to faulty ECT sensor or wiring, but it could, conceivably, be caused by an overheated engine.So if your engine was overheated diagnose that first. Having said that here are the possible solutions:

Using a scan tool, with KOEO (Key on engine off) check the ECT reading on the display. On a cold engine the ECT reading should match the IAT (Intake Air Temperature) sensor reading. If it doesn't, replace the ECT sensor.

1. If the ECT reading is showing an excessively hot reading, for example more than 260 deg. F, then unplug the ECT sensor. This should cause the ECT reading to drop to the extreme cold reading (around -30 deg.F or so). If it does, replace the sensor, because it's internally shorted. If it doesn't change the reading, the check for a short to ground on the signal circuit of the ECT wiring. It could be that the two ECT wires are shorted to each other. Look for any chafing or melted wiring. Repair as necessary.

a. If you can't find any wiring problems and the ECT reading doesn't drop to the extreme coldest when unplugged, then, check for voltage coming out of the PCM on the signal wire's pin at the PCM connector. If there isn't any voltage, or it is low, then the PCM may be bad. NOTE: On some models it is possible for the 5 Volt reference signal to be temperarily shorted. This can happen if an engine sensor internally shorts the 5 Volt reference. Since the 5 Volt reference is a "shared" circuit on many models, this will cause it to be abnormally low. Usually, though this will be accompanied by several other sensor codes. If you suspect that may be the case, unplug each sensor until the 5 Volt reference reappears. The last sensor unplugged is the offending sensor. Replace and recheck the signal wire from the PCM connector

2. If the scan tool ECT reading seems normal at this time then the problem may be intermittent. Use a "wiggle" test to manipulate the wiring harness and connectors while watching the ECT reading on the scan tool. Repair any wiring or connectors that are loose or corroded. You could check the Freeze frame data if your scan tool has that function. It will show the ECT reading when the failure occurred. If it shows the reading to be at the hottest extreme then replace the ECT sensor and see if the code reappears.

Hope this helps (remember to rate and comment this answer).

Jun 16, 2011 | 1997 Honda Accord

1 Answer

Code po117a what does this mean


P0117 - Engine Coolant Temperature (ECT) Circuit Low Input

The ECT (Engine coolant temperature) sensor is a thermistor located in the engine block or other coolant passage. It changes resistance with changes in temperature of the coolant that it's in contact with. It's usually a two wire sensor. One wire is a 5 volt reference from PCM (Powertrain Control Module) and the other is a ground supplied from PCM.

As the temperature of the coolant changes, the resistance of the sensor changes. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a signal voltage lower than the normal operating range of the sensor then P0117 code will set.

Potential symptoms include:
* MIL (Malfunction Indicator Lamp) illumination
* Poor fuel economy
* Poor drivability
* Engine may run rough or blow black smoke out the tailpipe
* May not idle
* May start and then die

Causes: Potential causes of the P0117 code include:
* Bad ECT sensor
* Short to ground on ECT signal circuit
* Faulty or damaged connectors
* Wiring harness damaged
* Loose terminals at ECT or PCM
* POSSIBLY an overheated engine
* Bad PCM

Possible Solutions: Since this code is for an abnormally low signal to the PCM from the ECT, the PCM saw a excessively "hot" condition in the engine coolant. This could be due to faulty ECT sensor or wiring, but it could, conceivably, be caused by an overheated engine.So if your engine was overheated diagnose that first. Having said that here are the possible solutions:

Using a scan tool, with KOEO (Key on engine off) check the ECT reading on the display. On a cold engine the ECT reading should match the IAT (Intake Air Temperature) sensor reading. If it doesn't, replace the ECT sensor.

1. If the ECT reading is showing an excessively hot reading, for example more than 260 deg. F, then unplug the ECT sensor. This should cause the ECT reading to drop to the extreme cold reading (around -30 deg.F or so). If it does, replace the sensor, because it's internally shorted. If it doesn't change the reading, the check for a short to ground on the signal circuit of the ECT wiring. It could be that the two ECT wires are shorted to each other. Look for any chafing or melted wiring. Repair as necessary.
a. If you can't find any wiring problems and the ECT reading doesn't drop to the extreme coldest when unplugged, then, check for voltage coming out of the PCM on the signal wire's pin at the PCM connector. If there isn't any voltage, or it is low, then the PCM may be bad. NOTE: On some models it is possible for the 5 Volt reference signal to be temperarily shorted. This can happen if an engine sensor internally shorts the 5 Volt reference. Since the 5 Volt reference is a "shared" circuit on many models, this will cause it to be abnormally low. Usually, though this will be accompanied by several other sensor codes. If you suspect that may be the case, unplug each sensor until the 5 Volt reference reappears. The last sensor unplugged is the offending sensor. Replace and recheck the signal wire from the PCM connector

2. If the scan tool ECT reading seems normal at this time then the problem may be intermittent. Use a "wiggle" test to manipulate the wiring harness and connectors while watching the ECT reading on the scan tool. Repair any wiring or connectors that are loose or corroded. You could check the Freeze frame data if your scan tool has that function. It will show the ECT reading when the failure occurred. If it shows the reading to be at the hottest extreme then replace the ECT sensor and see if the code reappears.

Other ECT sensor and circuit related DTCs: P0115, P0116, P0118, P0119, P0125, P0128

Hope this help to check and solve it.

Jan 19, 2011 | 2004 Chevrolet Impala

1 Answer

What type of engine oil does a Peugeot 306 (1.6 petrol engine) need?


Engine oil specifications for Peugeot 306 1.6 petrol engine:

1. SAE 5W-40, API SH or SG, for temperatures between -30 Celsius deg. and +40 Celsius deg.
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1996 Ford F-150 300 inline 6 timing gears/timing issue


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1 Answer

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