[Rollo]

Hi, new member who just purchased 1995 Trooper Limited. Have weird
problem of engine (3.2dohc) bogging down momentarily (1 sec or less)
when I use left blinker. Very distinct and happens every time. Right blinker has a similar but lesser effect and not every time. Anyone have any ideas? Looks like a great forum and thanks in advance.

Rollo

 

[JTK]

Your battery or alternator could be on it's way out. The truck may not be maintaining adequate voltage. The added load on the system by activating the turn signal lamps may be enough to starve the computer for a bit, causing performance issues. G/luck
Joel

 

[Rollo]

Thanks Joel, I'll definitely get that checked.

 

[Canucklehead]

If your battery or alternator were the cause I would think that any load would have a similar effect. There are a lot of loads that put a much bigger drain on the batt/alt. than the turn signals. Does your Trooper bog down when you switch the blower motor to high or turn on the AC (although the AC may not be the best example)?

If not there are a few things you can do to troubleshoot a bit. Since you state that the turn signals cause your Trooper to bog down it may be a ground or possibly a fault with the flasher relay. Try putting your flashers on to see if it also causes the same thing to happen. If the only thing causing the problem is your turn signals you may have a ground somewhere in the switch circuit. If it also occurs when you turn on your flashers the fault is probably in the flasher relay circuit.

 

[Rollo]

Thanks Steve, I used all other acc's one at a time and only blinker AND emerg. flashers cause this action. It gets curiouser. This engine miss actually seems to be a quick down shift when blinkers\flashers flash. It ONLY happens in fourth gear (automatic trans.). In 1st, 2nd, 3rd, or idling there is no engine\trans reaction to blinkers\flashers. While sitting in Park with engine idling, flashers and right side blinker cause a rather loud tapping\clicking sound inside center consol near the gear shift. Applying brake pedal stops this tap\clicking, resumes when brake is released.
I guess a downshift could result from a ground causing engine power loss so I will look into this. Is it possible that the -Apply Brake before Shifting out of Park- system is involved?
Thanks again for your help Good People.

 

[eeZooZooJaz]

Here I've got it.....stick your left arm out of the window stright out for left turns. Stick your left arm out and lift half of the arm (forearm) towards the sky (like your pledging), for a right turn. And then stick your left arm out and point it down when you need to stop. Hope this helps....

 

[Rollo]

Yes ezj, I swear i'm using those signals and I dont think thats taught in driversEd anymore. Also a sense of humor is important when your car is self destucting. But seriously folks, has anyone had or heard of this problem?

 

[Canucklehead]

I don't think the miss is a downshift, it is more likely the downshift is a result of the engine missing. If your tranny were downshifting, engine RPM's would go up for a given speed, the engine miss is probably causing RPM's to drop enough that the tranny thinks it needs to downshift.

I may be wrong though, since my Rodeo is a 5spd I'm really not that familiar with automatic tranny quirks.

 

[LTC Don]

Here I've got it.....stick your left arm out of the window stright out for left turns. Stick your left arm out and lift half of the arm (forearm) towards the sky (like your pledging), for a right turn. And then stick your left arm out and point it down when you need to stop. Hope this helps....

Ooh, Ooh, I know,

He needs to change the blinker oil....... :wink:

Sorry, couldn't resist

Ya know, its always a ground.......most likely, there's a short in the blinker wiring or something in the AT harness/Blinker wiring that may be interfering.

Isn't there a separate computer for the AT from the ECM on these trucks?

If so, then a thorough tracing of all wiring from the blinkers to the steering column and the Trannie to the shifter is in order.

A possible cuplprit could be the reverse light switch and its wiring harness....where is this located on the AT?

Interesting problem; good luck.

Cheers,