So I was having problems with my 98 blazer starting, took it to a mechanic and noticed on the way there when cruising down the highway the rpms were jumping about half of 1 when just cruising. (like it was at 3, and without any pedal difference would go to 3.5 then 2.8 then 3 etc..). Mechanic said it was my spider injector and charged me a 950 which I felt was way overpriced but was past my level of expertise to fix and the only mechanic I could get it to at the time. Now it starts right up but still is doing the RPM thing and if I take it back to the mechanic they charge and im out of money.
Any recommendations? It does need a tune up from sitting for about 6 months and barely driven since someone busted my windows out one night. I was thinking spark plugs but dont know how to get to #3, and was qouted the stupid price of 300 for them to do it.
I am so out of money its not funny and my other car is starting to crap out and I dont feel safe having my 2 year old in it anymore.
Thanks guys!

 

Check your fluid level. When mine was a bit low, it had some stumbles during converter lockup. If the level is low you could be loosing pressure and the converter is locking and unlocking.

 

I checked them before, and rechecked them just now. all seem fine, I am planning on doing the oil tomorrow because it needs it anyways

 

the best way to get to that spark plug is to go in by the driver side front tire and remove the rubber skirt and use a extention . Peice of cake .

 

On my isuzu hombre I had to carefully break the porcelain with an extension to get a short socket on it, when I put it back in I fingered it in as much as i could, and tightened it with a 1/4 ratchet deep socket (only one I could make fit) But you have to go through the wheel well.