rallynutdon Posted February 27, 2007 Share Posted February 27, 2007 This is a 2.2 motor and 5 speed in a 95 Impreza. The car originally had a 1.8. I put the 2.2 engine in using the 1.8 intake and all 1.8 lines/controls etc. Runs fine otherwise and motor ran great in the car I took it out of (drove it for several years). If you start in first gear and wind it out in all the gears (atleast til you hit 4th) you'd never know anything was wrong. But if you're in 3rd or 4th crusing for example and try to accelerate, it will stumble, not miss from around 2000 to 2500-3000 RPM. Any ideas? TIA. BTW, I did this same conversion (with a 91 Legacy motor) in another 95 but with an automatic and didn't have this issue. Link to comment Share on other sites More sharing options...
nipper Posted February 28, 2007 Share Posted February 28, 2007 Check the knock sensor. Also another possible suspect is the o2 sensor nipper Link to comment Share on other sites More sharing options...
rallynutdon Posted February 28, 2007 Author Share Posted February 28, 2007 Interesting. Motor has knock sensor, but original 1.8 didn't so the knock sensor is not plugged in! Link to comment Share on other sites More sharing options...
nipper Posted February 28, 2007 Share Posted February 28, 2007 hrmmm are the intakes differnt on the two engines? Can the car be starving for air in a specific rpm band? Why did you swap intakes? nipper Link to comment Share on other sites More sharing options...
rallynutdon Posted February 28, 2007 Author Share Posted February 28, 2007 Totally different connections for electrical/emissions/etc. Intake manifold is physically no different from 1.8 to 2.2. Can't be starving for air. If it did it would be in the higher RPM range. Link to comment Share on other sites More sharing options...
Skip Posted February 28, 2007 Share Posted February 28, 2007 Only a WAG Can you try the MAF from the 2.2? Is it possible the ECU ignores certain parameters when at WOT winding it out ? Like the MAF signal. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now