dunn378

I want to know if anybody has had the hesitation problems i've been having with my 91Ls? When I first start the car in the morning it hesitates, misses, and pops when i step on the gas. It's the worst if i'm at a light, then it turns green and I step on the gas it really hesitates until i get up to speed.
The funny thing is, it all goes away once the car is heated up. After the temp gas reaches normal, the car runs as if it was new!! If you have any suggestions of what the problem could be please let me know. Thanks in advance!!

93LS

I have the same problem...

check Transmission fluid.... have you ever done tranni flush?

93LS

dunn378

yeah i drained and filled it last year but i ddint change the filter. when you flushed yours, did it solve the problem??

93LS

It did get better...... did you fill it properly (enough I know book says some # for drain and fill but in reality it takes lot more) did you check it properly on flat surface not--> driveways<--- ......in P and in N, D and rest.
it is trial and error dont add too much....
also follow the temp.....

-93LS

dunn378

Well i changed the trans fluid and the car is still missing and hesitating very badly until the car reaches the normal operating temp. The thing that's confusing is it only does it when i first start it up in the morning. does anybody have any other suggestions?? could it be the coils, cap,rotor,wires??? I believe if it was one of those things, the problem would be there even after the car warms up. someone please help!! and if anybody knows how to test the coils to see if their bad please let me know. thanks!!

st-187

shot in the dark here but could it possibly be somewhere in the fuel system? fuel pump, lines,
injectors.
mabey an erratic vaccum leak?

440+6

check your carb.... sounds like its runnin either to rich or to lean check the spark plugs they will tell you whats wrong, if they are not normal replace o2 sensors maybe? probably something wrong with your idle.

//I don't know much about EFI soz

ychachad

Nope, it is your distributor caps and rotors. they have carbon/dust built up into them.

440+6

That seems to be most logical, I'd check that first, then if that isn't the trick: http://lextreme.com/tb.htm

dunn378

i really appeciate the help guys!! its been raining for like ah week straight in the n.east. now that we have a break in the rain i can take a look at everything. thanks again, ill keep u posted.