Crx Hi there i have 87 crx 1.5 it is haveing some problom it will run good and then a idle it will bog up and stall win u restart it u have to hold the gas to the floor for it to stay runing because it is missing in 3 or 4 cylinders. if u keep it down it will slowle pick up to 3 or for gran only missing on 1 or 2 cylinders if u keep reving it it picks up all for but at 6 grand it starts to get a bad back fire. at this time the pgm-fi light us to come on and then it would run fin but now it don't and it acts up more and more. i cant get eney lights to come on on the ecu not evin one is there some kind of short that i have to place to get the light to give me a code and what does it sound like it could be thancks troy my e mail is [email protected]

It could be the throttle position sensor.

Here are the common cause of surges, stalls at stops, slow idle speed, erratic idle, it is in most cases the idle speed control air-bypass valve and/or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving

Your only problem friend, is the temperature sending unit/sensor. Upon cold start, this sensor wil tell the computer to go into cold start mode putting a bit more fuel in and raising the idle a bit to keep it running when cold without using the throttle. Replace that sensor and your good to go. Makes sense, right?

Try this, it is the common reason for this problem.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

The CAMshaft position sensor is faulty.

I Would Suggest That You Complete A Engine Cylinder Leak Down Test.....(not A Compression Test But A Leak Down Test) this will tell you if you have internal problems....possible worn rings or a burnt valve(s) I would use a smoke machine to check for vacuum leaks also. Good Luck

You probably have a clogged fuel filter. There should be an inline fuel filter between the gas tank and motor, replace that and your good to go. I have the same problem with my c10 pick up.

what sounds like is a failing battery plus the reving is cause by the sensor in the air flow meter, for that buy a can of air flow cleaner and clean the air flow meter and all the intake system.

Hi jewellgirls is your truck carbed or fuel injected make sure you have spark and fuel, it sounds fuel related so check the fuel filter and pump, if you have access to a fuel pressure guage its a good place to start,let me know how you make out,good luck