'91 missing and would like a second opinnion - Page 6 - ZR-1 Net Registry Forums

XfireZ51 · 03-30-2010

"The other is putting a scanner on it or a computer and data logging to see what is going on. *Problems leading me to buying my own scanner stemmed from "no codes thrown" condition, yet ran like chit (and a "no problem found" from the dealer's mechanic) *In one case one of the O2's was shorting out after reaching about 3000 rpm, but it wouldn't do it all the time. *Try to run THAT down without a scanner! *My point is, a scanner and data logging will show you what is really going on over 40 some sensor and readout results and time stamp them all so you can see the interaction."

Can't emphasize this point more.

ZR-1Mikko · 04-09-2010

Well the search has finally ended and I want to thank everyone for their input and especially Ken for letting me borrow some parts...

Before I go to details I have to say that Paul is absolutely right about to NEVER assume something or another can't be the problem because it was recently replaced with a new item!

So after having my friend mechanic look at the car the end diagnose is that the car had two issues. The main cause for the miss was a failed spark plug wire! My self the only thing I did to the wires was to ohm them out, but since they were only two years old MSD wires I never spend a lot of time inspecting or trying out my old wires which I obviously should have done.

The second issue was the hoses connected to the fuel pump assembly in the tank were loose. It seems very unusual, but the clamps were loose causing a poor fool pressure.

So after 6 month break another ZR-1 is back on the road

tccrab · 04-09-2010

Fantastic!!!

Now get in it and drive it like you stole it!!

Personally speaking, I guessing that I probably would have eventually found the bad plug wire given plenty of time and stress.
But I don't think there's any chance in he!! that I'd have found the loose fuel hose clamps.
My hat is off to your mechanic buddy, he's a keeper!!

TomC
'Crabs

Hammer · 04-09-2010

tomtom72 · 04-10-2010

glad you got to the bottom of the trouble!

Now go drive her....you both deserve it!

03-30-2010	#51
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,678	Re: '91 missing and would like a second opinnion "The other is putting a scanner on it or a computer and data logging to see what is going on. Problems leading me to buying my own scanner stemmed from "no codes thrown" condition, yet ran like chit (and a "no problem found" from the dealer's mechanic) In one case one of the O2's was shorting out after reaching about 3000 rpm, but it wouldn't do it all the time. Try to run THAT down without a scanner! My point is, a scanner and data logging will show you what is really going on over 40 some sensor and readout results and time stamp them all so you can see the interaction." Can't emphasize this point more.

04-09-2010	#52
ZR-1Mikko Join Date: Dec 2005 Location: Las Vegas Posts: 108	Re: '91 missing and would like a second opinnion Well the search has finally ended and I want to thank everyone for their input and especially Ken for letting me borrow some parts... Before I go to details I have to say that Paul is absolutely right about to NEVER assume something or another can't be the problem because it was recently replaced with a new item! So after having my friend mechanic look at the car the end diagnose is that the car had two issues. The main cause for the miss was a failed spark plug wire! My self the only thing I did to the wires was to ohm them out, but since they were only two years old MSD wires I never spend a lot of time inspecting or trying out my old wires which I obviously should have done. The second issue was the hoses connected to the fuel pump assembly in the tank were loose. It seems very unusual, but the clamps were loose causing a poor fool pressure. So after 6 month break another ZR-1 is back on the road __________________ If you don't put the miles on it, someone else will...

04-09-2010	#53
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,645	Re: '91 missing and would like a second opinnion Fantastic!!! Now get in it and drive it like you stole it!! Personally speaking, I guessing that I probably would have eventually found the bad plug wire given plenty of time and stress. But I don't think there's any chance in he!! that I'd have found the loose fuel hose clamps. My hat is off to your mechanic buddy, he's a keeper!! TomC 'Crabs __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]

04-09-2010	#54
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: '91 missing and would like a second opinnion __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

04-10-2010	#55
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: '91 missing and would like a second opinnion glad you got to the bottom of the trouble! Now go drive her....you both deserve it! __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member