Rare96WS6

All of a sudden the converter is not locking up. The converter itself is only about 2yrs old. It is a Yank ss3600. What could be causing this problem? Could it be the tranny or is it just the converter? All4 gears in the tranny work fine, just no lockup.

performabuilt

iTrader: (25)

You need to have the car scanned and look at the data stream to see if its being comanded , If you dont have and ses light I doubt it is since that would cause PO1870 and turn on the SES most ikey reason for no ockup is engine missfire.

sroach20

iTrader: (31)

could be the lockup or pwm solenoid.

Rare96WS6

I just swapped out the MAF sensor since the check engine light came on for it this week. I have not reset my battery yet to get rid of the check engine light. Could this have anything to do with it?
Also, I am not familiar with the lockup solenoid.

performabuilt

iTrader: (25)

Lockup is controled through input from a variety of sensors. So it is possibe the MAF issue is related, However I would read the codes again before I cleared them .

Rare96WS6

The MAF code is the only one being thrown currently.

Gilbert@Ace Racing

That is enough to cause a no lock up condition...

g

Rare96WS6

I will reset the ECU to get rid of the MAF code. Hoepfully that will solve the problem.
I didn't mention it, but the car is a 1996.

performabuilt

iTrader: (25)

Let us know if that fixes it , If not your going to need to look at the data stream and see whats being comanded as far as lockup.

Rare96WS6

Well, resetting the battery did not fix the problem. I currently do not have a scanner in front of me, but the light came right back on again. The ECU is set to lock up the converter at 35mph. Other than that, without the scanner in front of me I do not know.
The car died at a stop light the other day and the light has been on since then. The only code that showed up that normally does not was the MAF sensor code. I changed the sensor, but the light is still on and the converter is not locking up.
I will hopefully be able to scan the car again tomorrow.

Rare96WS6

I don't have different codes showing currently. Is there any way it could be the TCC or PMW solenoid? Do they just go out like that? I am unsure if they would set a SES light but no code.

Rare96WS6

Problem solved! I found the fuse labeled "Eng Sen" under the hood blown. I put in a new one and the SES light went out and the converter is now locking up again. I
don't exactly know why this blown fuse was keeping my converter from locking up though. Maybe because of the MAF code I got earlier?

performabuilt

iTrader: (25)

Yes that fuse will cause a no lockup issue , Sometimes its just the simple things.
Glad you got it fixed

Gilbert@Ace Racing

Hey that's cool... good for you!

Grab your owners manual or a shop manual and look to see what devices are on that fuse... best to do a little homework now as it may happen again in the future. KNowing what all is on that fues might help you to diagnose the condition... many times there are several load devices on a given fuse. Example... intererior lamps and the cigar lighter can be on the same fuse. Fuses do not ordinarilly burn without an overload.

g

joecar

The ENG SEN fuse feeds the brake switch and the MAF sensor (and some other things).