Question about 1990 Honda Accord
Sorry no idea without my head under the bonnet to have a look.I would suspect a sensor not reading when it gets warm ,plug a scanner in and switch it to read data ,start car from cold then watch whats happening to the temperature and MAF and all the reat of it this will tell you what sensor is at fault
Posted on Dec 30, 2013
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Posted on Jan 02, 2017
it might just be your timing i had the same problem with my 94 hatch did have any power on first or second just had a friend adjust the timing and werks just fine.
Posted on Dec 23, 2008
First use a scanner and pull the codes out of the computer.
After you do that go to the shop manual and do exactly what it tells you to do to verify the item/items the code/codes are directing you to.Do the necessary repairs and erase the codes.
Surging and irratic idel as you described are due to a worn/dirty "Fast idle Cam Valve". This valve usually can be found on the fire wall somewhere behind air intake plentium.This valve can be easily tested by removing the two small screws that hold the top plate down and squirting a drop of oil into the valve, then relace the top plate and start the vehicle. The surging should disappear.
If it does you have two options a) clean it with gum out and hope it worked.b) replace it Its not that pricey and fairly simple to do. Use the shop manual if you decide to do this. Replacement is the better option.
With regards to the temp. gauge on dash board its either the wiring , the temp sensor its attached to, or the gauge its self.
If it has one wire coming from the temp sensor ,put the key in the ignition turn to on position BUT DON"T start the vehicle . Then ground the wire from the sensor and look at the gauge if it moved to the overheat position the gauge works and the wiring is good . Therefore, the sensor is most likely the culprit. If there is more than one wire coming from that sensor use the shop manual to test the items invovled.
If you still believe the engine isn't getting warm, let it idle for a while and turn on the heater. If your getting heat your ok. To double check it without any fancy equiptment see if the cooling fan comes on. Good luck
Posted on Mar 04, 2010
Testimonial: "Thanks for all your help-very good advice!"
Another place to look is your IAC, or Idle air control valve. It is bolted to the back of the intake manifold, and can be removed and cleaned. It is usually the cause of most Honda Idle problems.
Posted on Apr 18, 2010
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