jdcutty Posted May 25, 2005 Report Share Posted May 25, 2005 I've noticed in my Cutlass (3.4 DOHC) that it seems to lack in low end power and doesn't really seem to rev and accelerate quickly until it gets to the powerband. It has a little less than 160k on it and I dont know the entire work history. Im thinking if I change plug and wires and free up the airflow (intake/exhaust) a little it should help, but what could really be the major culprit here. The lack in power is compared to my dads Z. His motor has about 140k but also has more problems, but a considerably greater amount of low end power. What's the deal? Quote Link to comment Share on other sites More sharing options...
rudefyet Posted May 25, 2005 Report Share Posted May 25, 2005 any codes being shown? Quote Link to comment Share on other sites More sharing options...
jdcutty Posted May 25, 2005 Author Report Share Posted May 25, 2005 Oh yeah. I forgot about that. the EGR needs to be cleaned as well. It is throwing the EGR code. Quote Link to comment Share on other sites More sharing options...
JoroCorona Posted May 25, 2005 Report Share Posted May 25, 2005 EGR will kill low end power. I think thats your culprit Quote Link to comment Share on other sites More sharing options...
JJ77 Posted May 25, 2005 Report Share Posted May 25, 2005 A 3.4 DOHC with low end power, thats a new one on me Quote Link to comment Share on other sites More sharing options...
Brian P Posted May 25, 2005 Report Share Posted May 25, 2005 A 3.4 DOHC with low end power, thats a new one on me Quote Link to comment Share on other sites More sharing options...
jdcutty Posted May 25, 2005 Author Report Share Posted May 25, 2005 A 3.4 DOHC with low end power, thats a new one on me yea yea I know. But compared to another 3.4, it lacks Quote Link to comment Share on other sites More sharing options...
MoTox8410 Posted May 26, 2005 Report Share Posted May 26, 2005 i didnt realize 4 strokes had much of a powerband Quote Link to comment Share on other sites More sharing options...
89GPSE Posted May 26, 2005 Report Share Posted May 26, 2005 i didnt realize 4 strokes had much of a powerband DOHC motors have more mid to upper power, and a pushrod OHV motor will rip in low end. Quote Link to comment Share on other sites More sharing options...
joey b Posted May 27, 2005 Report Share Posted May 27, 2005 As timing belts get old they will stretch. If you haven't replaced it recently you may want to do that. An old belt can cause a 4* variance in timing. Quote Link to comment Share on other sites More sharing options...
your_I.D. Posted May 31, 2005 Report Share Posted May 31, 2005 When you change your tbelt. Advance your intake cams +8 degrees and retard exhaust cams -8 degrees. Makes a HUGE differance!!!! How do you do that..........Use this trick tool http://60degreev6.com/store/product_info.php?products_id=100&osCsid=cf50203c3549d95fb1ff9c080c64c59b worth ever penny! Set cam timing on my 97 monte. I was surprised at the differance it made. I checked cam timing before changing it. My cams were set correctly to factory specs. Quote Link to comment Share on other sites More sharing options...
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