90tbi305

When im driving and crusing at about 1500 rpm, my rpm gauge flickers. And it feels like it is missing. but from 1800-2000 rpm gauge up it doesnt feel that weard problem. At ideling it is beautaful. I have a brand new msd rotor and cap are about 5 months old, msd coil parts store new distributor, new moroso wires, and bosch 2.00 plugs.

Please help[ really sucks. -Eric

90tbi305

Has this ever have happend to any one?

BMmonteSS

yep, mine ended up being a loose ground strap inside the dissy. The hold down for the condensor also is a ground, mine vibrated loose.

If thats not it, it's something on the dissy side of things. You won't get a flickering tack unless there is something up with the coil, module or ground.

90tbi305

This really su**s, i bought a cap and rotor angain and accell shorty plugs. I have the bosch platinums. I read up on them that they are not to good.

I am going to check those grounds that you are talking about. Thanks

ShiftyCapone

iTrader: (7)

Your 02 could be on the way out. Has that been replaced during your last tune up? If you can't recal if it has ever been changed I would do it now for nothing more that preventative maintenance. A new 02 can make a world of difference.

90tbi305

Well i changed the cap ,rotor, and plugs. Also that bolt that you were talking about (BMmontess) by the ac bottle was lose and i tightn it . It runs a little better, but still having that little flickering thing.

I also have already changed the o2 seneor. Can it be anything else? -Eric

BMmonteSS

actually it's no the AC condensor I was talking about, it's the electrical condensor inside the dissy. Small tube shaped object, looks like a capacitor.

You haven't changed or tested any of the major ignition components that would cause your problem, mainly the coil and the module.

90tbi305

What tube are you talking about? What type of distributor do you have? I have a new style distributor that does not have the coil on top. My coil, my whole distributor, cap, rotor, wires, plugs are all brand new.

BMmonteSS

I have the big cap HEI, sorry, didn't mean to confuse you. I will say that your problem is in the dissy, something is causeing the coil not to charge, hence the flickering tack and corresponding miss.

90tbi305

Dissy you mean distributor?

Can it be a bad connection on the rpm gauge to the coil wire. I have one of those clips, are like a little mouth with a clip to close it. It could be that. i am going to fix that and see if that works.

I also moved the ground wire directly from the battery to the block ,to a different bolt and felt the car run alot better. Thanks for helping

BMmonteSS

A loose tach wire would make the tach jump, but wouldn't make the car miss. Keep after it, you'll find the problem.

90tbi305

Were are the exact pritty important ground wires that are located that i should be looking for?

vic_V8

if I remember right, the back for the block by the AC/firewall.

90tbi305

Well the bolt on the back of the head was kinda lose but not that lose. Still doing it.

I also checked the o2 like shifty said just in case. Nothing there just fixed the wire a little bit. I need to figgure out what this is, it really su**s. If worse come to worse i am going to go carb or something. what else do you guys think it is?

BMmonteSS

pull the modul and have it checked out at the local parts store, I know advanced has a machine to check it, try a new coil, heck just unplug every thing from the dissy a couple of time to see if the connectors have become corroded.

MADMAXGTA

iTrader: (1)

Ever figure this problem out?