Back in the V6 club
- 156 GTA.
Join Date: Mar 2008
Location: United Kingdom
Any brain boxes out there for 156 2.5 v6
Ok. I have a 156 2.5 v6, 1999. I bought it a year ago, and it never felt like 192 bhp! But nevertheless, it was smooth and quite powerful. Then, the timing belt slipped. So, I bought another 156, no tax/MOT, and swapped engines. The power problem still occurs! It revs fairly freely until 5,000 rpm, and then that's it. No more. I have changed the MAF sensor, and the plugs last week, and even put on a resistor for a little extra power, but still nothing! I have had 2 diagnosises carried out, and both nothing. My mechanic, working for Alfa/Fiat for 16 years, has never seen it.
So, what could possibly be there before and after I have changed the engine? Maybe a compression test will help? I don't know and it depresses me. HELP!!!!!!!!!!!!!!!!!!!!!