What is this noise?

[71-Ford-F100]

Ok I'm not sure how to post video's but I'm hearing random noises, grinding noises at a coasting speed, and idle, the sound may continue when driving aswell (but I can't hear it over the sound of the truck) Sorry for blank post I'll link the videos http://youtu.be/R6ULYoLvE3Q and http://youtu.be/MLjBnEvRwNA

My dad thinks it could be the starter, I have a ford racing start and it has 2 wires running off the starter, and we don't think we have it wired up right, but it only recently started making this noise...

[1972hiboy]

egad, it sounds like the starter is trying to engage. If your having concerns about the starter then thats would I would start. Simplest thing to do is pull it out and make visual oberservations and see if you can find any indications of contact via grind marks or something then go from there.

[tqwrench]

It almost sounds like something grounding out against the exhaust. Will it duplicate when brake torqueing the engine?

[71-Ford-F100]

what we think is that we have it wired up wrong some how, this is the starter we are using http://www.summitracing.com/parts/fms-m-11000-b51 In the instructions it explains how to wire it like this however when doing this the starter wants to engage the moment the battery is reconnected.. so instead of having one wire going to the "B" post (the post that connects to the battery) we have both wires connected to the "A" post, and the truck starts fine however 10-30 seconds after the truck starts you can hear the starter continuing to be engaged until disengaging, and after about five minutes of the truck running in idle, or coasting the sound that is heard in the 2 videos I posted start to be heard, the sounds that you claim sound to be the starter. is anyone familiar with these starters? and if so any advice?

[71-Ford-F100]

It almost sounds like something grounding out against the exhaust. Will it duplicate when brake torqueing the engine?

What do you mean by brake torqueing the engine.. sorry

[tqwrench]

Truck is still, you have it in gear, left foot on the brake and start pressing the accelerator slightly giving the engine a load. I'm assuming automatic. I guess if it's a manual that can be a little tougher to do.

[71-Ford-F100]

Yea it's an automatic, basically put it in drive and hold the brake all the way down and put a load on it as if doing a burn out... But obviously not as much... I'll check tomorrow on my way to work... The only problem is with how loud the exhaust is its hard to tell from inside the cab but I'll give it a shot.

[AZf100]

I Don't know if your starter would be the same, But I Had the Problem of it wanting to start as soon as the battery was hooked up. ended up being my coil wires were backwards.

[hazelnut]

To me it really don't sound like the starter trying to engage. Maybe the bindex is a little lose and it's not retracting back into the starter far enough and it rubbing a little on the flywheel.

Something else it could be is warn u-joints making the driveshaft ring. I've had trucks do that but they were all sticks, But something to look into.

[kato_pup_dog1977]

Are your starter and bellhousing bolts tight?

[71-Ford-F100]

I can't remember when exactly but I replaced my u-joints no more than 3 years ago, maybe 2.

My starter and bell housing both are tight, but I'll re-check again just to be sure.

And my coil wires are hooked up properly. if this was a transmission or torque converter issue would it make the noise in park and neutral, or just drive and reverse?

[kato_pup_dog1977]

Totally depends on everything...how loose, gap, torque load, and flex. Spend some time going over everything under the truck. Shake, wiggle, smell if necessary. Check all fluid colors, smells and levels. Not knowing where the sound is coming from there is no way to say what the possibilities are. Start with the simplest and cover everything. Things don't "just start" making noise without a change somewhere.

[71-Ford-F100]

Things don't "just start" making noise without a change somewhere.

Well it did start happening about 2 weeks after putting in a new 435 hp engine in, we didn't change the transmission out or anything still same ol stock torque converter, stock flywheel, stock c4, only thing changed was the starter..