|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Beef Dog Food | IgorSushko.com | Corporate |
|
#1
10-09-2006, 07:15 PM
|
||||
|
||||
|
Not starting when warm
I have a problem when my engine is hot my car doesnt start. If i sit there and wait anywhere from 10 - 25 minutes then try starting it again it will start. This happenes so often. Yesterday me and my friend went to walmart when we came out and were about to leave it didnt start. I waited like 15 minutes then it started. It seems to start fine when it sits a long time or when its cold. When its pretty warm or after i've been driving around then shut it off then try to start it it sounds wierd but if i wait for a while it starts.... what is the problem??
|
|
#2
10-09-2006, 07:35 PM
|
|||
|
|||
|
Re: Not starting when warm
You need to check for spark at the time it doesn't start, if you have spark, then try spraying carb cleaner into the intake and see if it starts, post back results.
__________________
|
|
#3
10-15-2006, 06:31 PM
|
|||
|
|||
|
Re: Not starting when warm
I bet it's your Ign Module - had same thing happen - not sure what engine you have...
if you have spark when it's cold, that means you also have fuel... it would be more rare on a FI engine to lose fuel pressure only when the engine was warm, but if the pump is failing, that could be it too. The carb thing, can "trick" the ign module to fire, but still not start the car - I tryed that, and thought it was fuel related, so I replaced everything from the fuel pump to the inj rail - still same thing - finnally found out it was the Ign Module - which I'm betting is your problem, esp if this is the 3.1 Let us know
|
|
#4
10-16-2006, 07:43 PM
|
||||
|
||||
|
Re: Not starting when warm
Alright well I took it into the shop today and I told the mechanic what was going on. He said it could be the fuel injectors. He didnt look at it tho till tomorro so I'll let everyone know.
|
|
#5
10-17-2006, 12:30 PM
|
|||
|
|||
|
Re: Not starting when warm
Quote:
If there is only one crank sensor on this vehicle, it is possible for the ignition module to see the trigger signal and there to be no rpm signal to the computer. In this case, there would be spark at the plugs, but no injector pulse. The ignition module could be faulty. If the engine is a 3100, I believe that engine has two crank sensors. There are issues with that engine, I'm not sure of. I don't believe the ignition module controls spark timing at any time. Yeah, it might kill the spark, but I don't believe it can do anything else? If there has to be a signal on the p/w wire coming from the igniton module to the computer, reguardless of whether that signal originated from the 3x or 24x source, then yeah, the ignition module could keep the vehicle from starting. I'm not sure on this example.
|
|
#6
10-17-2006, 04:11 PM
|
||||
|
||||
|
Re: Not starting when warm
It is a 1990 chevy lumina euro 3.1. You might be right I'll let you know as soon as I hear from the shop. Thanks
|
|
#7
10-18-2006, 01:45 PM
|
|||
|
|||
|
Re: Not starting when warm
The year and engine size, you listed, there is only one crank sensor. Max and mediaman both could be correct.
If it cranks good but won't start, I have a helper crank it, then check for spark at the plugs, also check that the computer sees an rpm signal. If both tests check out, it's not the ignition module. I'd be surprised if all injectors shut down at the same time, unless they were losing B+ or ground.
|
|
#8
10-18-2006, 09:32 PM
|
|||
|
|||
|
Re: Not starting when warm
I recently had the same problem to witch your describing
it turned out to be a failing fuel pump... as for the fuel injectors.. if they were clogged or not working properly the engine would run but really rough.. I'f you haven't already, have the fuel pressure checked. it should be in the range of 41 to 47 lbs. of pressure.
|
|
 |
POST REPLY TO THIS THREAD |
 |
|
|
