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I have a 1991 Honda Accord and when I'm driving the RPM drops down to 0 and the car shuts off, sometimes it will start right back up and sometimes it won't. I have changed the spark plugs but what other things could possibly cause this to happen?
Bad ignition module in distributor will also cause car to cut off while driving and sometimes not want to start back right away.Bad ignition module in distributor will also cause car to cut off while driving and sometimes not want to start back right away.
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rumbles?, did the RPM drop below 800 RPM? that is called idle failure
and when it does, idle can go to 400 rpm and will shake hard.
and is normal for illegal idle speeds. so post that first.
post that engine stalls
and that the RPM is 400-500 just before the stall.
then post if the fast right foot can save the stall (a key test !!!!)
if easy the ISC is sticking.
if tad hard the EGR is stuck open'
if impossible to save. then more possible (many) ever do the 60k mile tune up this decade????,. if not why not./ now.
a dirty or faulty MAF sensor can cause proplems like this. try cleaning it with CRC MAF cleaner you can get it at just about any autoparts store. the MAF is located on the air intake disconnect the electrical connection and remove the sensor be careful not to damage the fragile filaments inside. there is no need to wipe it just spray it clean and let air dry be sure to spray all parts plug, filaments everything
I have a 1991 honda accord dx that had the same problem. while driving it would just completely shut down. after about 5 minutes it start and run for a while then shut down again getting more frequently. There was a recall on the ignition control module (ignitor) which is in the distributor. call your local honda dealer with your vin # and will tell you if yours was replaced. If not I bought one from parts store for $60 or you could take a chance and buy one from a junk yard. I bought the whole distributor for $20 as a back up.
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) 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.
I had the same problem. My car would shut off without any warning, I changed my Main Relay located under the dash, right below the change slot on the left hand side. I have not had a problem since. The price at Napa Auto parts runs about $68.00. This should fix your problem.
The main relay also controls the transmission and will cause an intermittent interruption of power and indicates its going bad. about a $60.00 replacement cost. the relay is located under left side of dash.
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