"NEW" Riv owner,new to the site...PROBS..Help

Hi..I welcome all your expertise....bein a girl and Jimmie Johnson fan...My 'New' 95 Supercharged Code 1 is givin me probs.

Upon driving (not at low speeds or initial acceleration) when I am at ~45 to 60 mph and kinda coasting & then I need to accelerate to maintain my speed, my engine majorly 'Bucks'. If I 'Gas' it, I can alleviate the Buck about 70%. Engine light is intermitent.

I have vacuumed out & replaced the air filter....
Figure its got somethin to do with the Fuel filter, pump, injectors....Does anyone have any advice? "For a Novice"!!!!!!!

Where can I get a general manual??Havin trouble finding one.

Also, any tricks to reaching those back 3 plugs? Front 3 look like firing fine

Im A big guy and them back plugs were a bitch for me I went from the top passenger side good luck

On the Series I supposedly the plugs are not too tough to reach from underneath. Put car on ramps, reach past exhaust manifold. Engine cold (hot manifold does not tickle). You will need a short (like 1-1/2") wobble extension for your spark plug socket. There's a spark plug thread somewhere on this board where we discussed this at length and posted instructions for the Series I and Series II engines. Please use search function to find it.

Albertj

SuperRiv07 wrote:

Im A big guy and them back plugs were a bitch for me I went from the top passenger side good luck

I bet you need a big cereal!

+1 on rear plugs from under. Also the "bucking" sounds like wires to me. Had the same prob....

albertj wrote:

On the Series I supposedly the plugs are not too tough to reach form underneath. Put car on ramps, reach past exhaust manifold. Engine cold (hot manifold does not tickle). You will need a short (like 1-1/2") wobble extension for your spark plug socket.

Albertj

I use a long extension and a swivel, that way I only have to reach in to remove and replace the wire.

Oh yea, and…
Welcome to the Forum

whatleece...you will never find a manuel on the rivs, only if you come across a gm shop manuel. i've looked online and all the parts stores. now what you could do is get a genral gm 3.8 series one engine manuel at the parts stores. but hey you found this site so ask us and will be able to help you. i know personally i have a mitchell on demand disk for our coars and i have access to all data thur my job.

ask for as the bucking goes before you guess at what you need to change i would get the car scanned. now some 95's have obd2, but the majority are obd1. try going to your local parts store and see they can scan your car and write down the code and post it on here. that will help us out alot to diagnois your problem. because bucking could be that you need a tune up, or it could have sumthing to do with your air fuel metering system(o2 sensor, maf, map..). guessing though plugs and wires would be a good start but have your car scanned.

wellcome and good luck with your new riv!

Wires or possible fuel filter

Plugs and Wires!!

Welcome to the site and good luck!

-Derek

Welcome to the Forum, Whatleese

I battled the same problem for a few months just figured it out with help from these guys. My problem ended up being a bad coil (brand new auto zone POS) the way I found out isn't pretty but it worked. With the car running I pulled each plug wire off the coil packs. You will get a small shock if it is a good coil and it should run like crap when unpluged. My middle coil pack one side was working one side wasn't.

To get to the back plugs I take the alternator off and the vaccum box (Black rectangle shape not sure what it's called) at the firewall off. This gives me plenty of room to lay across the motor and reach
behind.
Good luck,

I would agree with what has been posted I have seen "bucking" with all of the above the hardest one for me to diagnose was the MAF sensor... plugs and wires could do it, fuel pump and or clogged filter does this, plugged up injectors as well... so getting your car scanned is a great first step and the easy stuff (not so easy on the riv) plugs and wires is always good...