My latest prob....

[nboost]

Hey guys. I havent driven my car but maybe twice in a week and decided to take it out for a spin. I read in earlier threads that many guys are running 100% Denatured alky or Methanol with there alky set ups. I figured I would give it a try. I was running 21 p.s.i with a 70/30 alky-water mix with 0 KR. Now with a 100% detatured, and just 23 p.s.i, i got 5.9KR and O2's only at 796 WOT. I did raise FP from 43 to 45 static when I turned my boost up. What do you guys think?
Also, I want to mention that my car kinda has a hard start problem like it has a huge cam which it doesnt(stock longblock) and also when i stopped at the bank it was idleing fine then started to cough and choke and just died....think i got a bad fuel pump or something? The guy i bought the car from over ayear ago now said that he put a Walbro pump in it but still dont know how old that is if thats the case?

 

[nboost]

I forgot to metion as well that after i got on my car, the idle remained at like 1500 rpm and wouldnt come down til i sat at a dead stop for a bit??? Vacuum leak maybe?

 

[turbo nasty]

No SES light ? If your TPS is not connected good/or at all it will idle real high like that. But, you would get a light or code stored.

With alky setups it is best to verify operation with no alky and back to low (low for alky users at least ) pump gas boost 15-16 psi and verify everything is right. If so then it is most likely sumthin' with the alky.

 

[scgnx]

Boy, that really is starting to sound like the Crank sensor or Cam sensor. I recently had my crank sensor come loose and hit the interupter disk. The car stumbled and backfired, idle rpm went to 1400.

After I replaced the crank sensor, it idled fine but got alot KR with very little boost plus intake backfire. Crank sensor wasn't adjusted correctly and rubbed on the interupter. I also re-set the Cam Sensor and its back to normal.


- Scott

 

[nboost]

No codes thrown and tps read .44? If it is the crank sensor or cam sensor, how much are new ones?.....

 

[scgnx]

I didn't get any codes either..crank sensor was $30. Cam sensor is more like $130. But first crawl under the car and see if the interupter is rubbing on the sensor. Put a breaker bar with 1-1/4 socket on the crank pully bolt. Rotate the engine and watch to see if there's contact. I hate to just replace parts willy nilly..$$$

 

[nboost]

Ill go ahead and try what you said... we'll see if thats the case.
thanks

 

[nboost]

Ok. I checked my crank sensor, everything looked fine. however, there is a little plastic piece that seems to conform to the front of the oil pan that holds a wiring loom...kinda hard to explain but anyway, that was rubbing on the littleplate with the 3 cutouts that sits behind the crank pully....dont know if that had anything to do with it. Needless to say I went out and got on my car 4 times...pulled good and 808 o2's .7 KR at 23 p.s.i ? I still think though that i need to get a ignition module seeing how i keep having hard starts. It also seems too that im running way rich only when my car has started to idle a while without getting on it. o2 cross counts are only going from like 828 to 832 and keeps doing that? Bad o'2?
Should my o2's be a little leaner than 808 @ WOT? FP is at 43 static. I swear this car has me giong crazy at times. Last thing I know its a lot of questions, my INT? is 117. GNTTYPE says 118-150 is good i believe? what does this mean?
thanks for your patience guys

 

[OKBuickTurbo]

Thread is from 2004

 

[6cylboost]

better late than never

 

[TurboBuRick]

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