93 Buick Regal Starting Problems

[Ed Hunter]

My 93 Regal 3.8L will start and run really good until it warms up then the idle gets really rough and then dies and I have to crank it over many many times to get it to start again. I had a vacuum leak and got that fixed. I have checked the fuel pump and changed the fuel pressure regulator, spark plugs and wires, IAC, checked out the MAF and it seems to work fine.
Any other suggestions I could try???????

Thanks for any help you could give.

[Vandy 1]

Originally Posted by Ed Hunter

My 93 Regal 3.8L will start and run really good until it warms up then the idle gets really rough and then dies and I have to crank it over many many times to get it to start again. I had a vacuum leak and got that fixed. I have checked the fuel pump and changed the fuel pressure regulator, spark plugs and wires, IAC, checked out the MAF and it seems to work fine.
Any other suggestions I could try???????

Thanks for any help you could give.

Could be related to the emission system as it sounds as it's not
fuel delivery,and spark.
The EGR Valve is the most likely component in the system to
have problems so check it first.
I as*ume the air filter is clean too?

[Ed Hunter]

The air filter is new. I will be chcking the EGR this evening and see if that may be bad. Thanks for your suggestion. I'll post back if it works or not.

[maxwedge]

Originally Posted by Ed Hunter

My 93 Regal 3.8L will start and run really good until it warms up then the idle gets really rough and then dies and I have to crank it over many many times to get it to start again. I had a vacuum leak and got that fixed. I have checked the fuel pump and changed the fuel pressure regulator, spark plugs and wires, IAC, checked out the MAF and it seems to work fine.
Any other suggestions I could try???????

Thanks for any help you could give.

When it dies you need to check the fuel pressure, then check for spark when it won't start, post back results of these tests.

[Ed Hunter]

I have spark and fuel pressure. I changed the EGR and now I can get it to idle, but it is a little rough. It is still hard to start but not as hard to start as it used to be.