Hard To Start When Hot

[EZFrank]

I have a 91 accord and when we drive the car for awhile and shut it down it doesnt want to start know here is the messed up part i checked for spark and fuel and its fine but the car wont start I just replaced the timing belt, head gasket, intake manifold gaskets i tried to do a diagnostics but the engine light wont flash just stays light. This is really starting to annoy me if any body has any info i would really appreciate any help. Thanks EZFrank

[somick]

May be a temperature sending unit. It thinks that the car is cold and sends computer a wrong information?

Sam

[AccordCodger]

Sure about the fuel? It sounds like the main relay.

[EZFrank]

I changed the fuel main relay even swapped it out with my nephews out of his honda and still would not start. I am wondering if its the computer maybe gets hot or is about to Burn out. car starts fine when you let it sit for a couple hours. another thing i forgot was the car sometimes the heat doesnt work blows cold air i am goin to change the temp sensor. and i will let you all know what happens. Thanks EZFrank

[EZFrank]

Okay here what else i have done changed all the sensors temp, oxygen, all the sensors on the intake also tried another computer and still does the same thing runs fine and when it gets hot we shut her done and does not want to start. know i was wondering could it be the fuel pump. Well still searching and pulling my hair. But will let everyone know what i find. Thanks

[EZFrank]

Okay here what else i have done changed all the sensors temp, oxygen, all the sensors on the intake also tried another computer and still does the same thing runs fine and when it gets hot we shut her done and does not want to start. know i was wondering could it be the fuel pump. Well still searching and pulling my hair. But will let everyone know what i find. Thanks

[somick]

I have reread your posts and noticed you mentioned lack of heat. I know you have worked a lot on the car, but how about your antifreez? Do you have enough of it?
Another problem might be with your vacuum hoses. Check them out as well.

Sam

[jeffcoslacker]

Originally Posted by semyonlibman

I have reread your posts and noticed you mentioned lack of heat. I know you have worked a lot on the car, but how about your antifreez? Do you have enough of it?
Another problem might be with your vacuum hoses. Check them out as well.

Sam

YES.

Make sure you don't have a crappy ground to the head/block that breaks down when it heats up also. That'll play hell with sensors.

[EZFrank]

Yes i have checked all my vacuums that was like one of the first things i did and antifreeze looked good. I will check the grounds that sound like it would cause something like that to happend also i met this guy the other night and he says to check my timing with the timing light it could be off by a tooth or two. But its wierd cause car start up fine but you drive it for 20 minuts or half hour and shut it down and wont start.Thanks For the info guys will keep yous posted.

[EZFrank]

Big problem car finally died now we have no spark at all i put new coil and ignitor and computer and still no spark. Know what do i do? Should i just take a hammer to it. lol

[EZFrank]

when we put the coil in we had switched two of the wires around with out notice and found the problem was a bad coil car is running very nice know no more problems. Thanks all for the help