car won't start when it is over 65 outside

I have a 91 Acccord EX 2dr that won't start when it is over 65 degrees outside. The car only does this when it is hot outside. The car will sit all night and when i go to start it to commute to work it won't start.
This problem has been on and off for the last three years. When i try to start it all it will do is act like it isn't getting gas (but it is) and if I take off the distributer cap the 4 prongs will look like the are fouled out (oxidized). If I scrape the oxidation off ot the prongs and wait twenty minutes it starts with no problem, smokes a tiny bit, then takes me the 140 miles to and from work. I have tried new: wires, plugs, cap, rotor and it still happens from time to time and every time I take it to the dealer for diagnostics they say nothing is wrong. Something has to be wrong if it doesn't start. right??
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Resolder the main relay. Very common.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

I have a buddy at work who had the exact same issue with his early 90s Accord a couple years back and had a $100 part replaced that fixed the problem. Likely what Steve posted here. I'll check with him tomorrow and post back.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Yep, I asked my buddy today and the main relay issue mentioned by several people here is exactly what he had fixed a couple years back.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Put a new relay in and it could fail in the same way.No way of telling how old the relay is. Resolder the one you have,and you save money.
--
Jim Yanik
jyanik
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Ya, he didn't say whether he had it replaced or repaired, although most likely replaced taking it to a mechanic. It's been ok for a couple years now, but your point is well taken.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Sometimes the contacts get funky. I resoldered the one in my daughter's '93 Accord and it remained intermittent. A new one fixed the problem.
Mike (been soldering at work for 35 years)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

But at least you didn't blindly replace the relay. The cost to resolder is negligible,replace a working relay that wasn't the problem and you're out $50-100.
--
Jim Yanik
jyanik
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

The cost to resolder is negligible IF you do it yourself. If you're part of the other 98% of the population who pay someone else to fix their automotive problems, nothing comes cheap. If you are part of that 98%, you probably shouldn't be driving a 15 year old vehicle though.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Ain't that the trooth.
With an older car, you've got to accept that you'll be doing lots of little jobs all the time, and raising the hood at least once a week.
You'll be on the constant lookout for sudden increases in oil consumption, leaks, rattles and other weird noises, rust, failed parts that are not obvious, all sorts of stuff.
You'll also be comparing the cost of fixing the old car to the cost of carrying a new one, and you'll be willing to let your neighbors think you're crazy for spending lots of money keeping an old car in good shape.
You'll allow yourself a budget, say $100 per month (or more), for repairs, and will not skimp when it comes to fixing things right. And your neighbors will think you're crazy.
You'll hang on to the old car for lots of personal reasons, none of which anybody will ever understand, except another nut like yourself (or maybe your wife).
And you'd be amazed how cheap an old car is to run when you don't try to cheap out on repairs and maintenance, even if you get somebody else to do the hard stuff. An old car is hobby. If you don't want it to be a hobby, stick to somethng new.
--
TeGGeR

The Unofficial Honda/Acura FAQ
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Could not have said it better myself...
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Main relay? enables the fuel pump to keep enough pressure to run the fuel injection. Has problems with cold solder joints,causes intermittent operation,heat-related.
http://www.markl.f9.co.uk/howto/electrical/main-relay/main-relay.htm
--
Jim Yanik
jyanik
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

http://www.tegger.com/hondafaq/startproblems.html#mainrelay
--
TeGGeR

The Unofficial Honda/Acura FAQ
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
james christoph via CarKB.com wrote:

________________________
If you need to use the car tomorrow, before fixing the relay, you can smack the dash with the switch in position II, and you'll hear the fuel pump run for four or five seconds . . The car will now start. When the car is warm, it's the vibration that keeps it going once the engine starts.
'Curly'
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
After you got all the good replies, here's something that made me wonder...
james christoph via CarKB.com wrote: | I have a 91 Acccord EX 2dr that won't start when it is over 65 | degrees outside. The car only does this when it is hot outside.
Where in the world do you live that 65 degrees (assuming Fahrenheit) is considered *hot outside*? ;)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

LOL
65C would be 149F!!! Not even Death Valley is that hot right now!
--
TeGGeR

The Unofficial Honda/Acura FAQ
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Thank you for the info on my problem. I spoke to a Honda tech and he told me basically the same thing. Oh yeah, in upstate New York 65 is a beautiful day.
--
Message posted via http://www.carkb.com

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Related Threads

    Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.