I have an 01 ss. when i am driving and the rpms are low, and i accelerate too quickly there is a rattle that comes from the engine. I also hear the same rattle on the freeway in overdrive when I step on the gas to pass someone. It only happens when the rpms are low. If anyone has any suggestions it would help, thx.

 

ya, i have the same problem. the engine kindashakes andfeels like its gunnastallwhen i accelerate a low rpms.

 

You sure it's a rattle and not detonation? Odds are your timing map is advanced a bit too far (could be from a bad temp sensor or something)causing detonation. Basically, all your fuel burns before the piston reaches top dead center, it's sort of like whacking a rising piston with a hammer. Its hard on wrist pins and kills fuel efficiency.

 

first you should goget your computerscanned.itcould say it has engine misfire or something.it could also be your spark plug wires. i found out that thats the problem i have and im gunna get it fixed

 

I think I know what you're talking about man, My car does the same thing around 1000 rpm, (96 LT1) mine sounds more like it's coming from the trans/ clutch though. its kind of like a rattle/grind. sound familiar ?

 

1996 z28

I have that grinding noise in the clutch/tranny. What the hell is it?

 

Doesn't sound good -- better check your trans fluid and consider a filter/flush and replace w/Dexron 6 (not 4)...

 

With regards to the rattleing at low RPMs while accelerating CHECK YOUR PLUG WIRES. This has happened to me three times and every time it has been a spark plug wire (My headers like to melt them even with fiberglass booties). When you try to accelerateat low RPMs everything will shake and rattle especially the transmission, my 6spd will shake all over the place. Every time its one spark plug wire that has melted or broken. All three times it's been hard to tell there is a miss the big clue is everything shaking under acceleration. After I found and replaced the broken wire everything has been better.

 

i have the same problem only its very bad. yesterday, it ran so smooth (if been having that problem so i was happy). today, i take a car was and put in some Lucas fuel injector cleaner and it runs so bad and it also backfires at 4500 rpm. i cant even get it to 5000. it happens when accelerating but when you accelerate slowly, you cant feel it. please, i need help. i pretty sure some connectors got wet but i have no idea what. thanks!

 

P.S. If I'm in neutral and i rev it, it runs smooth. it only shake when i accelerate