Sep
19
2009
I have a 2001 Chevy Blazer, we have replaced all bulbs and checked/replaced fuses. My left signal blinking fast and my right signal not blinking at all and my back lights are staying illuminated. Do you have any ideas on what we can check next???
Answer:
Check the light bulbs them self for being the specified number ( should be listed in the owners manual )
( ex. a technician will install a 3057 instead of a 2057 bulb) these bulbs are different, and so is a 3157. they all look the same but don’t work the same. Make sure to check all of them in the rear for this. This occurrence is more common than you think. Feel free to check out some of the other resources on the website as there may be some helpful information available.
Sep
13
2009
you have to coax the accelerator alot to keep it running then it will idle, pops in the fresh air intake area when you increase the throttle. sometimes if you do it slow it will get past some of the pop and rev higher. It pops no matter where you put the timing. Checked the distributor all is timed right but EGR doesn’t seem to be working right. Also no codes
Answer:
1) Perform a complete tune up : plugs, wires, cap and rotor …. Eliminates possible arching and probably needs one anyway.
2) Perform a compression test on each cylinder : all cylinders should be with in 20 PSI of each other usually between 120 – 150 area. If you see a loss of compression you may have a burnt valve ( seeing as it pops no matter where you put the timing )
The only way for it to pop is for the spark plug to spark at the wrong time or for the valve to be open when it happens. Extreme premature detination is a possibility ( did you just put a fresh tank of BAD gas in it ) Feel free to check out some of the other resources on the website as there may be some helpful information available.
Sep
10
2009
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Sep
07
2009
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Sep
06
2009
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Sep
03
2009
Operation
The Engine Coolant Temperature Sensor (ECT) input to the EMS is a primary input for the calculation strategies and control of fuel delivery and spark timing. The ECT is also used to determine loop status (open/closed) timer requirements (inside the EMS) and to support cooling fan operation. ECT failures can cause excessive rich conditions, increased injector pulse-width and retarded spark timing. The ECT reads the coolant temperature at the intake manifold. When the engine coolant is cold the information given to the ECM causes the fuel mixture to richen. As the coolant temperature gradually increases the voltage signal from the ECT changes signaling the ECM to adjust the fuel mixture accordingly.
Related Symptoms
The following symptoms can be caused by a faulty Engine Coolant Temperature Sensor or circuit loose connections:
- Extended crank time when the engine is cold
- Poor fuel economy
- Spark knock
- Lack of engine power
- Erratic and/or high idle
- Engine cooling fan stays running all the time
- Engine cooling fan fails to turn on
- Engine overheating
CAUTIONUse care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
WARNING
Hot, pressurized coolant can cause injury by scalding, Do not begin work on a hot engine cooling system. Cooling system must be partially drained before removing the coolant temperature sensor.
