I have a 1986 Honda Accord LX that takes a long time to warm up. The thermostat was replaced, but did not make any difference. Is there any other valve or ? that could be causing the problem?

The automatic choke also does not engage until after about 2 miles of driving. Then the engine increases from about 700 RPM to about 2500 RPM, like the manual says it should. This is a manual transmission and the engine has a carburetor.

Thanks for any help. Been a great car.
Gary

 

The only thing that comes to mind is that your new thermostat is still the culprit. Maybe it was installed incorrectly or has a defect. As far as I know, your thermostat is the only thing that has the ability to raise the engine temp.

 

Your thermostat would have to be stuck wide open from new. Highly unlikely or was it not a honda thermostat?

 

Thanks for the input. The new Honda thermostat was installed to fix the same problem. I guess I could have received a defective theromstat. I believe it will only fit one way. Thanks for your input.
Gary<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by amckee &raquo;</TD></TR><TR><TD CLASS="quote">Your thermostat would have to be stuck wide open from new. Highly unlikely or was it not a honda thermostat?</TD></TR></TABLE>

 

I had the same problem with an old OEM thermostat so I replaced it with a high temp (190*) thermostat from Autozone. It still takes just as long to warm up. The system has been bleed a billion times, it never overheats.

 

Aftermarket thermostats are simply not as good as the Honda OEM thermostats. I verified this several times by purchasing aftermarket and later discarding them.

A Honda 195F thermostat will warm the temp gauge to midrange ini less than 3 miles of 30 mph driving. Note, the engine is not fully warm; oil is cold and much of coolant is still cold. However, the coolant in the engine is trapped and warms rapidly if there is very little flow (bleeder bypass only). I've not found any aftermarkets that are even close. The extra $5-10 for OEM thermostat is worth the money. On a cold morning, having warm air in 1-2 mins, rather than 5 minutes is worth the extra cost. Note, I'm referring to warmups in a warm climate, Houston, w/ outside temp perhaps 35-50F in winter. In much colder climates, the warmup will undoubtedly be longer.

good luck