You must hook up a scanner to locate the problem the codes will give you the direction to go
SOURCE: Check engine light comes on sparingly
sounds like something like that. probably something is in the process of failing, make sure you are running the proper gas, make sure coolant levels are ok, and oil changed REGULARILY, learn to do it yourself if you havent already it will save you loads of money, VERY EASY, i can walkthrough if you need. Next time it comes on, and stays on call like jiffy lube or autozone and see if they can scan your vehicle for codes for FREE. have that done and google the code to find out what the problem is. Its called an OBD code.
Testimonial: "The auto store was able to use a OBD-II scanner to get the stored codes."
SOURCE: 2001 Isuzu Rodeo 54248 miles
Hi.
If problem is only on startup and when idleing, then the problem is likely IAC system, also a vacuum leak will cause the same problem.
If problem is not only on startup and idle, but also when driving, then MAP sensor and EGR system must be checked.
Check also accelerator cable state and setting.
The first thing to do is pulling out the OBDII fault codes stored in the ECM. This is done connecting a code reader to the ECM diagnostic port. The job can be done for a small fee at any local garage, and it is done for free at AutoZone.
The codes will help locating the problem.
About possible faults:
Problem is stalling when idling and during startup, but engine idling fast all the time. Problem not starting at times it is due to the fact that the wrong mixture is being sprayed, this is probably causing flooding and misfire. Since the CEL is on, one of the codes returned is probably misfire.
Check accelerator.
Check IAC system. This is composed by a valve and a solenoid that check and control amount of extra air air when the engine is idling. The IAC valve is located on top of the throttle body.
Check the vacuum system and try cranking with gas tank cap off. Vacuum
system is tested using an hand tool gauge onvacuum lines while spraying
card cleaner on the hoses (or heating them with a torch). If there is a
leak, pressure will go up. A big leak will also do hissing noise, and
will often result in a lean code when doing an OBD code scanning.
This kind of symptoms can also be caused by weak wiring to MAP/MAF sensor (MAP in this engine).
If the car also drives very rough and is revving up and down in a weird way, check the EGR valve.
As first thing I would do a code scanning. This car is OBDII. The scan can be done for free at the nearest Autozone, or for a small fee at any garage.
If you get any OBDII code from the scan, report it here, so that we can individuate the possible reason for the problem.
If you repute my solution helpful, then please take some times to accept the solution. Providing good repair tips requires time and skills, and your feedback is important for us.
Regards.
Ginko.
SOURCE: heater only blows luke warm
Have you changed your themostat to a winter temperature range. If so it may be faulty - stuck open. Remove rad cap when cold and start eng. - (be sure rad is full) water should not start to circulate in rad until thermostat opens at its designed temperture setting as seen through rad opening.
Testimonial: "thanks i'll give it try its a vehicle i just bought for my son."
SOURCE: My isuzu kb 300tdi lx starts and drives nicely,but
It is very common for many vehicles to drive nicely with the Check Engine light on. This is why so many people simply ignore the light. (BAD MISTAKE)
The true fact is that the computer is trying to tell you that there is a malfunction in one of the many different systems and/or electrical circuits that are monitored by your onboard computer network. Some of the possible malfunctions are simple and do not require much in the way of diagnosis or repair. Other possible problems are not so easy.
At the very least, you are wasting expensive fuel. The engine computer cannot properly maintain the correct air/fuel ratio when there is a system malfunction and the light is on. At worst, you could be causing severe damage to some very high-priced parts of your car(including the engine and/or transmission and catalytic converters) if you continue to operate it with the light on. Chances are very high that the longer you drive it with the light on, the more expensive it will be to fix it when you do finally fix it.
The only way to find out the nature of the failure is to scan your onboard computer network and retrieve the Diagnostic Test Codes (DTCs) (AKA - Fault Codes) that have been recorded as a result of the malfunction. These codes are then used to identify the correct diagnostic and repair procedures.
Hello
When the service engine
soon light (Also called the check engine light or engine management
light) is turned on this is to alert you to the fact that Powertrain
Control Module (computer) has detected a failure somewhere in the
systems it controls you may not feel any difference in the way the
engine runs, this can be the transmission or the engine or emission
system, there are fault codes set in the modules memory for these
faults. What needs to happen now is to have the powertrain control
module scanned with a special tool called an OBD2 electronic engine
control scanner or a OBD2 code reader. Once the code(s) are read then
you must perform the diagnostics for each code and make the
appropriate repairs based on the findings of the diagnosis that was
performed, this is called doing "Pinpoint" testing.
Hello
When the service engine
soon light (Also called the check engine light or engine management
light) is turned on this is to alert you to the fact that Powertrain
Control Module (computer) has detected a failure somewhere in the
systems it controls you may not feel any difference in the way the
engine runs, this can be the transmission or the engine or emission
system, there are fault codes set in the modules memory for these
faults. What needs to happen now is to have the powertrain control
module scanned with a special tool called an OBD2 electronic engine
control scanner or a OBD2 code reader. Once the code(s) are read then
you must perform the diagnostics for each code and make the
appropriate repairs based on the findings of the diagnosis that was
performed, this is called doing "Pinpoint" testing.
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