Ars Tribunus Angusticlavius Show Registered: Mar 21, 2000 Posts: 6570 I have a 1990 honda accord. Aside from the expensive exhaust repairs, it's been a very reliable car. Until this summer. The problem is intermittent, but as I think back, I remember it always having trouble during the daytime, when it has been sitting in the sun for some time. Never do I recall it not starting in the night, after the car has cooled down inside. Being that my car is black, it can get quite hot sitting in the sun. As far as I can tell, it is really only the interior that gets hot. The hood of course, gets warm, but that has circulation through the engine compartment, so nothing in there ever gets that hot just sitting. So far the only thing I have replaced was the fuel filter. I didn't think that was it, but I figured for $11, it was cheap piece of mind. I have not tested anything else, though I do know there are three things inside the passenger cabin that contribute to starting: 1) The ECU is in the passenger footwell.
A new ECU is $314, so I'm hoping it's not that. I think I will take off the covers, leave it that way, and then get a can of circuit cooler and spray it on it when it is hot to see if that solves it. I willl also try and troubleshoot the fuel pump and it's related electrical stuff sometime soon. Right now, though, my car is sitting at the repair shop, because I had the exhaust fixed (again) for $250. It sat in the sun all day after they fixed it early this morning. It wouldn't start after I went down there after work to get it. I don't have the money to take it in to get the starting problems troubleshot. Anyone have any ideas that may lead me to a solution quicker? Ars Tribunus Angusticlavius Registered: Dec 28, 2001 Posts: 6165 is it carburated? if so, then the fuel may be vaporizing in the lines and you're getting whats referred to as 'vapor lock'. if not... hmm. My dad's 83 jetta does the same thing, but it's some sort of wiring problem. He wired up a 'start' switch directly to the starter, and when the key doesn't work (hot weather) the switch does. Who knows, its an 83... Ars Legatus Legionis Registered: May 18, 2001 Posts: 13454 It's a vampire car, you fool! What did you expect? *sigh* "Certified ski school ninja" Tribus: Where the other half of NYS lives Registered: Jun 23, 2000 Posts: 23828 when my family and i lived in AZ, we had problems in the summer where the water in the battery evaporated due to the extreme heat. we had to keep a jug of distilled water in our trunk to refill it a bit to get the car started. maybe that's it? - shannim Ars Tribunus Angusticlavius Registered: Mar 21, 2000 Posts: 6570 It's fuel injected. I'll check the battery thing out, I didn't think of that, but it starts other times just fine. Ars Tribunus Angusticlavius Registered: May 15, 1999 Posts: 7578 While not directly attributable to your issue, older GMs have this issue where the starter solenoid (mounted on the starter, right under the exhaust) get hot and stop working. So perhaps you're not too far off in suspecting the fuel pump relay or the ignition switch. Ars Legatus Legionis Registered: May 23, 2001 Posts: 21642 quote: That's what I was going to say. Ars Tribunus Militum Registered: Oct 10, 2000 Posts: 2220 I had this and my brother told me to check all the wiring connections to the starter to the solinoid and also the wiring in the ignition. Do you hear a *click*? but it doesn't turn over or is it dead silence? Or it is the starter going but the engine not catching? Ars Tribunus Angusticlavius Registered: Mar 21, 2000 Posts: 6570 No, it turns over just fine. Cranks all day if I let it. There is no problem with it turning over, never has been. My ex just took me down to the shop and i picked it up. Since it was 11pm, and it was dark out, the interior was cool, it started in about two cranks. There is plenty of water in the battery. I am suspecting the fuel pump relay. Ars Legatus Legionis Registered: Oct 29, 2000 Posts: 18677 Get a cheap scan tool or see if you can jump pins on the ALDL connector for a series of SES light flashes to give you a code. Do you have a book? Ars Tribunus Angusticlavius Registered: Feb 9, 2001 Posts: 6329 So when it doesn't start it cranks good but it just never fires up? Ars Praefectus Tribus: West Chester (formerly Asteroid M) Registered: Apr 6, 2000 Posts: 5926 quote: This was a problem with my Plymouth Sundance RS. I had to have the ignition switch replaced twice. If I got the car started, by the time I got home and took the key out, you could see small amounts of smoke coming from the keyhole. Ars Tribunus Militum Registered: Aug 31, 2000 Posts: 2706 My dad's 1989 CRX does the same thing. Apparently there's a problem with air getting into the fuel lines. Holding down the gas pedal for a bit - 20sec or so - then trying to start again seems to do the trick. Ars Praefectus Registered: Feb 5, 2001 Posts: 3044 the Daystar is tricksy. never trust it around your precious! Can the sun cause a car not to start?The excessive exposure to heat can evaporate the water leaving lead plates exposed. This weakens the battery even faster and by the time weather cools down, it would no longer have the amperage required to start the car.
Why does my car not want to start when it's hot outside?If there's nothing wrong with your coolant levels, your motor oil, or your battery, and your car still won't start in hot weather, it could indicate a deeper issue with your engine. Your coolant temperature sensor might be broken, for instance, which means that the engine will “think” it's hotter than it is.
What happens if car is parked in sunlight?The interior and exterior of the car get affected by the UV rays. Car paint dries, and flaking of the paint begins. The car spirals into premature ageing. Cracks on the dashboard & damage to the upholstery.
Why does my car start when it's cold but not hot?The cold starting issue could possibly be caused by a failing fuel pump or even a temperature sensor. Heat increases resistance in electrical circuits, and it is possible that once the fuel pump has been running for a while, high resistance causes it to slow or stop.
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Car wont start when parked in sun
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