Hello Experts,
So I've change the following:
MAP, MAS, TPS, IAC. The ECM wa s re-programmed cause it hsd s Buick Turbo program in it. All in the ladt 7 months. The MAS was replaced last week.
Symptoms:
Starts and Stalls - intermittantly
Engine revs to 3000 rpm on startup - intermittantly
Engine starts and ildes normally but will hold last rpm level then gradually drift down to about 1000 rpm.
Engine runs fine then surges then drives the car for me.
Gas mileage is 14mpg.
After I changed the MAS, the service engine light came on. I got 4 engine codes. U1000, U1016, P0102 & P0122. As I said, I've replaced both the MAS & TPS.
I think I may be having an DCM connectivity problem. And now I am out of the type of funds I need to take it to a shop. So I HAVE to fix this myself. :'( But this is taking my experience to the limit. Please help! I feel like I've got an old Hoopdee that I bought just to get to and from work. It's depressing and frustrating. I don't even take my Monte above 55mph. Help me please? I need a 70mph fix bad! :'( :'( :'(

 

Wow! Guess I must be in t world of hot doodoo? I sometimes it's good to be the first at something. But this isn't one of those times! But that's ok cause if this ever happens to anyone else I'll be able to help them. So there's a silver lining in this cloud! ;-)

 

Without researching the trouble codes, I'd inspect the CAT and look for vacuum leaks. To look for Vac Leaks, get a can of starting fluid, while the engine is idling, mist the starting fluid around. If you have a leak, the fluid gets sucked in the leak, you'll notice a change in the idle. If you find a spot where this happens, inspect it (with the engine off) for problems.

As for the cat, after driving the car, leave it running, look under the car, if the cat is clogged, that thing will normally get cherry red. If it is, there is your issue.

Again, just off the top of my head ideas with no research on those trouble codes.

 

Thanks for the reply. I was thinking about the CAT. Hoping that's not it. Wanna do the hole exhaust this spring. I don't get a Bank 1 o.s. code but i know that doesn't mean the cat is good. The haven't done a leak check yet cause the Mrs. put my chiltons away and doesn't know were. The Computer had to be rewired cause it was crushed in an accident before I got it. So I'm thinking the combo of the wires being shorted and all the bumping from the 22s cause the harness to come loose. Now I just have to battle the cold to get all this checked. Oh well, you v otta do what you gotta do right! I'll post results. B-)