Wierd electrical issue

[mclarida]

My car's ecm and radio lose power on full throttle(1st to second gear shift) and come back after I get off of it. I checked the connections(all seem good). If anyone has an idea I would like to fix it-
M

 

[Ishodu]

Check your alt out. You could be drawing too much current and causing them to shut off. If you got a volt meter you should check your power with the car running with lots of accessories on. AC, Heater, Radio, lights ECT and see what the voltage is.

 

[Ishodu]

Could also be a bad connection on the battery cables, at the battery or the starter or even the one at the alt.

 

[dstig1]

Check the battery too. I've had really weird electrical behavior 2 times in my cars life. Both times it was a dead battery. No warning to speak of. I would step on the brakes and the radio would turn off, the EATC would reset, all kinds of weird stuff. How old is that battery? 5 yrs or more, just replace it anyways, as PM.

 

[mclarida]

Check the battery too. I've had really weird electrical behavior 2 times in my cars life. Both times it was a dead battery. No warning to speak of. I would step on the brakes and the radio would turn off, the EATC would reset, all kinds of weird stuff. How old is that battery? 5 yrs or more, just replace it anyways, as PM.

Yea-I thougt it was the battery as well-replaced it with a new optima red-I will check the alternator though-I have a spare so no big deal if it is-
M

 

[dstig1]

When you replaced the battery did it fix it or not? If it went away then you found the problem. The second time it happened to me it was an internal short in the battery. It was only ~1 yr old, and decent quality. They replaced it. All better.

 

[mclarida]

When you replaced the battery did it fix it or not? If it went away then you found the problem. The second time it happened to me it was an internal short in the battery. It was only ~1 yr old, and decent quality. They replaced it. All better.

No, still there. Seems like it is a short or a alt. problem-M

 

[SHO#7]

I would double check grounds and all connections related to the battery and alternator. Also, how are your motor mounts? Do you have alot of engine movement. On worn mounts, that motor can move around pretty good on a high rpm 1-2 shift.

Mike

 

[qiksho]

I would double check grounds and all connections related to the battery and alternator. Also, how are your motor mounts? Do you have alot of engine movement. On worn mounts, that motor can move around pretty good on a high rpm 1-2 shift.

Mike

I second the motor mounts...they can cause all sorts of strange problems. If you have a shiny spot on the top of your intake more than likely you have atleast one bad mount.

 

[mclarida]

I second the motor mounts...they can cause all sorts of strange problems. If you have a shiny spot on the top of your intake more than likely you have atleast one bad mount.

All the mounts are new except the drivers side one that is near the wheel. It seems a little dmged. No shiny spots though. M

 

[SHO#7]

The transmission mount will not make the motor rock ( unless it is destroyed. ) I just mentioned mounts as alot of engine movement will losen grounds, plugs, connections, etc...

Mike