Advice on electronics

Reply Subscribe

Thread Tools

Search this Thread

Nov 4, 2004 | 04:10 PM

mholmes

Thread Starter

New User

Joined: Nov 2004

Posts: 4

Likes: 0

Advice on electronics

I have a 89 full size Bronco (351W) which I have just about restored everything. It WAS running fine but has started a banging noise in the engine. Sure sounds like timming is way off. I put it in storage for over a month. Recently started it up and banging was gone (untill I turned it off & on again). I suspect the Computer since I changed everything else under the hood. Any clue were to start?

Nov 4, 2004 | 08:01 PM

desertdave35

More Turbo

Joined: Oct 2004

Posts: 621

Likes: 2

From: Marana, AZ

Welcome to the FTE!

Before somebody can give you any advise we need more info than what you gave.

Is it a banging noise like main bearings clanking or is it pinging like someone is rattleing a chain around inside your engine?
Did you rebuild the motor or is a stock one?
How many miles do you have on it?
Does the noise increase with rpm's or is it constant regardless how fast the motor is spinning?
Does it only do it when it idles or driving or both?
Answer these and maybe we can pin point your problem.

Nov 5, 2004 | 10:38 AM

mholmes

Thread Starter

New User

Joined: Nov 2004

Posts: 4

Likes: 0

It is a banging noise. It increases with RPM. It is NOT a bearing, rod or valve since it had no noise once, then noise started up again later. It is a stock motor that has been rebuilt. It has about 2k miles on it. No water in oil, etc, etc.

Nov 5, 2004 | 11:17 AM

greystreak92

Lead Driver

Joined: Sep 2002

Posts: 9,182

Likes: 12

From: Gateway to the West

Does your banging noise seem to have an effect on engine performance?

Nov 5, 2004 | 12:02 PM

mholmes

Thread Starter

New User

Joined: Nov 2004

Posts: 4

Likes: 0

I'm afraid to drive it. Sounds like it is way off timming. Yes, it runs like xxxx!

Nov 5, 2004 | 12:06 PM

genueix

Senior User

Joined: Mar 2004

Posts: 110

Likes: 0

Well if it sounds like your timing is way off...you should check it and fix it if it is?

Nov 5, 2004 | 12:25 PM

mholmes

Thread Starter

New User

Joined: Nov 2004

Posts: 4

Likes: 0

Dah! New distributor and electronics modual. Looking for some advice from someone who had same problem. Just saying FIX it does not help!

Trending Topics

Help! 292 exhaust manifold needed

57

778
Bad trouble with axle shaft snap ring

48

728
23+ Regen Strategy & iDash Observations

36

719
F-450 - 2027 vs. 2028?

35

1.4k
This is prolly a 1 page thread at most

110.2k

6M

Nov 5, 2004 | 05:45 PM

desertdave35

More Turbo

Joined: Oct 2004

Posts: 621

Likes: 2

From: Marana, AZ

Its not your timing, and I'll tell you why, you said it was making this noise, you turned it off and stored it for a month, then started it and the banging was gone, then shut her down and upon restart the banging was back. Timing doesn't correct itself to that extent. If the timing was that way off you would have had a check engine light which would have stored a code. Don't rule out a rod or main bearing just yet, I've had bearings spin on me and go crazy then all of sudden they will lodge in place and quiet up and then let loose again and start banging again. What I suggest is try to pin point where exactly the noise is coming from, i.e. top half, botton half, front or rear. If you only have 2k miles on a re-build it could be possible something let loose, could be a torque convertor bolt hitting the fly wheel or a valve keeper might have come off and one of your valves is hitting the piston top. It could really be a number of things. But trying to pin point exactly where the noise is coming from is key to figuring out your problem.