Everyday i have a straight 25 mile highway drive to work... My 3600 stall vig is being weird... for about 5 miles it will lock.. then unlock for a few... then lock... and so on... this just happened recently.. any ideas? its a new converter with 600miles on it

 

do you have !TM?

 

are you going up hill or lugging the engine in od. If so pop it in D and it should go away(or less).

 

i tried putting it in 3... but im crusing 75 in od !tm? whats that?

 

wow 75 it shouldnt be doing it. Did you add anything beside the convertor like maf?

 

Use a scanner to see if your getting any misfires. If the PCM detects misfires it will un-lock the converter. See if you have any pending codes and than see if you should get rid of them via tuning

LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

Sounds like random misfires due to reduced flywheel effect to me. Have misfire detection turned off, I bet it fixes the problem

 

it is tuned...

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by nysbadmk8:
<strong>it is tuned...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">More than likely it just has the P0300 surpressed. Get a-atap or similiar to see if the misfire codes for the individual cylinders are pending

LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

does anyone sell those wonderful scanners ?

i guess that would be a good thing to have...

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TomQ:
<strong>does anyone sell those wonderful scanners ?

i guess that would be a good thing to have...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">ATAP is available from most of the sponsors for about $250, but you need a laptop too.

 

how bad are misfires?

 

It could be misfires or it could also be you are low on fluid. Check to make sure your fluid is all the way to the top of the hot mark on the tranny dipstick while the car is still running in park.

If you changed the cam and didn't get the misfire code removed via programming then that's your problem.

<small>[ June 23, 2002, 08:52 PM: Message edited by: OBSSSD ]</small>

 

a ported MAF will cause locking and unlocking issues while driving also. if you put the stock one back in its a easy fix(worth a shot)

but more than likely you have the same prob as i did. I would be driving and out of the blue it unlocks, goes for 2 mins, then locks back. Somedays it wouldnt do it, others every 5-10 miles.

i just used edit and changed this

under engine diagnostic you go to test parameters and change the Max Misfire detection to 140 and the Min to 139 then you will have no more probs at all.. mines 100% fine now