Dodge Grand Caravan
Ford Expedition XLT
Why would a 1989 Corsica have no spark after replacing the crank sensor if the coil pad and computer tested OK?
Asked in Toyota Camry
How do you fix P1705 diagnostic trouble code on 1998 Toyota Camry?
What ruined the battery as it was perfect when it was tested but after replacing the starter which was not the cause of the car not starting and then replacing the computer the battery had a bad cell?
Asked in Computers
What computer component is not tested by the POST routine?
Asked in Chevy S-10
Can the map sensor cause an s-10 to lose engine power?
Why does check engine light on 1994 Chevrolet Corsica 3.1 L come on after 10 minutes of highway driving?
Hey Clifton==Takeit to Auto zone and have the codes read free. GoodluckJoe I have had mine tested and there is an error in the computer that gives false readings such as check engine, hot engine, etc. There is a computer chip that needs replacing, but I am told that the exact same number must be on the replacement computer chip. When each system is tested through the computer individually, it will test as ok, or in fine operation, yet the lights will continue to display randomly. This error could not be reset, only a replacement of the computer chip is what my mechanic told me to solve the problem. Until replacement, you will have to watch the fluids, temp, etc. manually (old fashioned way of checking the dipsticks & fluid levels) until this chip is repaired.
Asked in Cars & Vehicles
How do you test a map sensor on a car?
A m.a.p or manifold absolute pressure sensor can be tested with a scan tool on 1996 and later vehicles. This sensor is found only on some vehicles. Others have a m.a.f sensor (mass air flow). These sensors measure air flow before entering the engine and send the info to the pcm (computer). If the m.a.p sensor is faulty you may or may not have a "check engine" light illuminated.
Asked in Dodge Ram
Why is a 2003 Dodge Ram 1500 4x4 showing 'Hot' but the engine not hot after replacing thermostat and the mechanic tested with laser gun and it indicates engine is NOT running hot?
How do you know if your catalytic converter on a Chevrolet 1998 truck is bad when you get check engine light?
Its a better bet that your O2 sensor is fouled and/or needs replaced. You can go to AUTOZONE and have it tested for free. There are two; one in front of the sensor (this is the one to have tested), and a second between the catalytic converter and muffler. Don't make the mistake (sigh....) of finding that the sensor is bad and replacing the wrong one. The one in front of the catalytic converter is a bear to replace (usually) and if you've not replaced it, that's probably a good place to start. If that sensor is OK, test the back one. If both are OK, then you're looking at the converter. Good luck!
Asked in Chevy Impala, Chevy Malibu, Crankshaft Sensors
Does a Chevy Malibu have a crankshaft sensor instead of a camshaft sensor?
Yes, it does. I know, because mine is faulty on my Chevy Malibu and it was just replaced. My car would shut off at stop lights and even when driving down the road. It felt as if it was something electrical, or even a fuel issue. Two months of car repairs, which included tune-up, new fuel filter, and trip to the dealer (who couldn't figure out the problem), the mechanic did a google search and found that the crankshaft sensor goes out pretty frequently in Chevys. Hope this helps. Actually the answer to the original question is NO, the camshaft sensor does not replace the crankshaft sensor. On my 98 Malibu I have a camshaft sensor, a 7x crank sensor and a 24x crank sensor. My Malibu is not starting, we've tested the crank sensor and replaced the computer and still no fire to the plugs. The ignition module has been tested and it's good. There have been a lot of discussion about the Passlock system, but I reset that, now I'm turning towards the camshaft sensor which is suppose to control the fuel and the tach, but there may be other interactions with the computer that keeps it from firing the ignition system. The only indication the camshaft sensor is bad is I get no reading from the tach no the dash or from my OBDII computer reader. My book says the computer uses both crank and camshaft sensor when firing the injectors, but if the plugs don't fire, the injectors aren't the problem and I sprayed starting fluid in the intake and no joy.
Asked in Ford Contour
98 ford contour does crank sensor control spark and fuel?
Asked in Oxygen Sensors, 2000-2005 Dodge & Plymouth Neons, 1995-1999 Dodge & Plymouth Neons, DIY Projects
How do you change the O2 sensor on a 1995 Dodge Neon?
Your O2 sensor basically tells the computer how your engine and catalyst are preforming. A good one will sweep from 0 to 1 volt as the computer adjusts the engine from lean to rich. As it wears, it will function more slowly, or the voltage will be off slightly, thus causing your engine to lose performance. Since they are related directly to emissions, they will trigger your check engine light if they fail or become too far out of wack. They should be tested before replacing, because many other faults can cause them to have bad readings, but the computer doesn't know that, it only knows the reading is wrong. They are fairly simple to replace, they just unscrew from the exaust pipe, and unplug from the electrical. You will need a special O2 sensor socket, similar to a spark plug socket, to take them out.
Asked in Oxygen Sensors
Will a bad oxygen sensor cause your battery light to flash?
Hi, I have had a intermittent check engine light that threw a code for an o2 sensor Took my 99 eclipse to the dealership to have car inspected and while driving there of course my cel and battery light appeared not at the same time within 3 minutes of each other. Battery light first then cel light. Dealership states that the o2 sensor was separated would this also cause a battery light to appear. Dealer is saying battery light is coming on because of computer but I just drove it home from the shop after replacing the o2 sensor mind you when I pulled in I had a battery light and check engine light on. Neither 2 lights appeared so I don't want to spend 800 plus on a computer if the o2 sensor could be the culprit of a battery light. Alternator and battery has been tested 4x know for a fact that it is not that!
Asked in DIY Projects
What type of sensor would utilize 2 wires and how would it be tested with a dvom?
Asked in Chrysler LHS
Why does 1995 Chrysler lhs shuts off while driving?
Why does a computer get tested before being sent to its customer?
Asked in Car Starting Problems, Dodge Avenger
2000 dodge avenger wont start no fire to plugs would the crank sensor cause this problem and how can the crank sensor be tested?
Asked in Auto Parts and Repairs, Chevy Express
Where is the electric fan switch on the 1995 Chev 454 engine located and how do you test it?
This answer should apply. You should have at least one sensor on or right near the thermostat housing. The one for the computer will be a 2 wire sensor, the one for the gauge could be 1 wire or 2. Doesnt this truck have a clutch fan though? What year is the engine? Newer engines will have a ECT (Engine Coolant Temperature) Sensor that tells the computer how hot it is which in turn will send power to a relay that powers the fan. On GM products that sensor is usually on or near the thermostat housing. Some models have 2, one for the computer and one for the gauge. Both can be tested with an ohmeter. You would need a manual to cross reference the resistance readings with temperature definitions
You have a 93 Chevy lumina check engine light keeps coming on had it tested MAP sensor bad relaced it nothin oxygen sensor bad but havent replaced it yet when cold runs fine but when it gets warm cant?
if it wont run when it gets warm it might also be a faulty crank sensor. and it wont always trigger a check engine light mine didn't, well it did but it threw a code for an egr valve so I wasted $220 replacing the egr valve to discover the problem was a $20.00 crank sensor. Have you checked the air filter? Sometimes an old air filter will cause problems that show up as a faulty map sensor.