Question about 1998 Chevrolet Cavalier

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Coolant temp not sufficient for Fuel System etc fault keeps coming back

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What does your engine temperature gauge indicate? Is it on the low side even after the engine runs for a while? If the temp is always on the low side of the gauge, you probably have a thermostat that is stuck in the open position (or possibly someone removed it and did not replace it). If the above describes your engine temperature, and you change the thermostat, it should 'fix' the fault code and shut it off for good.

Posted on Nov 19, 2009

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2016 susuki king quad 500 high temp warning light comes on mechanic says that is has something to do with the fuel injection system. Could this be possible?? never heard of such a thing!! TY

The fuel injection has nothing to do with coolant temp, unless it is running extremely lean. Do not alter exhaust system. Check for correct coolant level. Check for bad coolant temp sensor. check thermostat, Check for correct cooling fan operation and related sensors and relays. Don't risk a blown head gasket or the warranty being void

Jun 02, 2017 | Cars & Trucks

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How to find out what keeps blowing my fuse and overheating my Nissan Sentra 1.8 2006?

check what fuse is blowing
I suspect that it is a fuse for the fan relay that switches on the radiator fan
if that is the case , replace that relay
the reasoning is this
there is a fuse for the coolant temp sensor
that sensor reads the coolant temp and reports to the ECM so that the air/fuel mixture can be adjusted correctly
there is a second fuse for the control for the fan relay
when the coolant temp reaches a set temp , the ECM through that second fuse energizes the fan relay which starts the fan to cool the radiator
from your description , the short is in that system and so I suspect the relay is faulty
take it to an accredited auto electrical specialist for a diagnosis of the fault

Feb 06, 2017 | Nissan Sentra Cars & Trucks

1 Answer

The cooling fan comes on five minutes after starting

Unless you have the A/C on, that may be normal. The cooling fans only run once the coolant temperature exceeds about 215 degrees. It runs until the temp is down to about 200 degrees. The fans will cycle on and off as necessary to keep the coolant within that range. When the car is in motion, the airflow thru the radiator is normally sufficient to keep the coolant stable and the fans do not run. Only if you turn on the A/C will the fans runs constantly, since the A/C system needs constant airflow thru the evaporator.

Nov 03, 2016 | Cars & Trucks

2 Answers

Have a 1996 falcon which has rusty water coming from the exhaust pipe this vehicle has been sitting for awhile but has been started and let run for awhile it does not appear to be over heating and see

If the cooling system has not lost coolant there is no fault . there is moisture in the exhaust system from sitting so long. should clear up when the engine dries the system out. Keep a eye on the coolant level or may be change it.

Sep 21, 2014 | 1997 Ford Falcon

1 Answer

Alero Problems car starts, but dies at running temp. then after 20 mins. it will restart, until running temp again, then dies. have changed, cam, crank, & map sensors, also ign. model, & pass lock assy....

Seems to me that I've run across this problem 3 or 4 times over the years on different cars. Problem usually comes down to either fuel system, electrical system (including sensors), or the coolant system (including sensors). I ran into this most recently on an '89 Escort. Wound up replacing fuel pump relay, ignition relay, TPS sensor, ignition module, coolant temp switch, coolant pump (and timing belt while I was in there). Fixed a couple of engine grounds and a couple of misc things. Point is that there is probably more than one item at fault.

Oct 11, 2013 | Cars & Trucks

2 Answers

2005 impala

The engine, AND ENGINE COOLING FANS and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL THE DIAGNOSIS & TESTING IS COMPLETED.

Jul 12, 2012 | Cars & Trucks

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I have a 2000 silhouette. the coolant level low light keeps coming on even though coolant has been added. after about 10 minutes of idling the temp rises to just below h.but temp is fine while driving....

Bleed the air out of the coolant system,and add more coolant,to radiator,and reservoir,and make sure the cooling fans are coming on,if the low coolant light stays on,remove the low coolant light sensor,and clean it off,it is located on passengers side in the radiator,it has a wire clip you have to remove,and dont loose it,after cleaning it,put the clip back on the sensor,and push the sensor back in the hole.

Jun 13, 2010 | 2000 Oldsmobile Silhouette

1 Answer

Loses power after 15 minutes. sits for 15 minutes and then runs f

Silly question

You got the code PO-420 Catalyst System Efficiency Below Threshold (Bank 1)

That is the converter,don't these places people go to ,tell you what codes they pulled?

O2 Sensors
Coolant Temp Sensor
High Fuel Pressure
Bad Converter
Cylinder Misfire
Damaged Exhaust System Pipe/Muffler
High Oil Consumption
Etc, Etc

May 26, 2010 | 2001 Honda Civic

1 Answer

When I first start my Jeep each day, I have to let it warm up or it hestitates. It's like it's not getting getting gas. Occasionally, it even stalls. That problem only lasts for the first few minutes that...

It is running lean during cold start mode when the fuel is vaporizing fast enough to keep the engine running.

Either your cold start system is not operating, or your Mass Air Flow Sensor is coated with varnish and needs to be cleaned with carb cleaner. Your engine coolant temp sensor tells your engine computer what the temo of the engine is. The computer then tells the fuel injectors how much fuel to inject. When engine is cold, it injects more fuel to keep the engine running. So, it may be the coolant temp sensor. Autozone can run a computer scan for free and tell you what the fault codes are. However, if the coolant sensor fails to always reading warm engine, the scan may not get a fault code for that.
A coolant sensor should be about $75, cheaper on ebay. Report back on codes and progress.

Jun 03, 2009 | 2005 Jeep Wrangler

1 Answer

Truck wont start

Is it getting fuel?
is it getting spark?

as for the is the code list for gm vehicles

Code: Meaning:
No Distributor pulses
Oxygen sensor
Coolant Temp sensor circuit
Coolant Temp sensor circuit
Throttle Position Sensor
Throttle Position Sensor
Manifold Air temperature sensor
VSS (Vehicle Speed sensor)
Manifold Air temperature sensor
EGR system
MAP sensor or MAF sensor depending on engine
MAP sensor or MAF sensor depending on engine
Idle Air Control Valve
MAF Burn-off circuit
No Distributor pulses, cylinder select error
Electronic Spark Timing or Bypass fault
Electronic Spark Control fault
Lean exhaust
Rich exhaust
VATS system fault
PROM fault
CALPAK fault
System over-voltage
Fuel pump circuit
ECM fault
Oxygen sensor fault (degraded sensor)

Jul 17, 2008 | 1990 GMC Sierra

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