took out the plug and it looked ok.
repositioed some the wires
if it does it again I'll swap the wires and
the windex trick is a good one
thanks!

Thanks will, u're right, sorry for the messup. I meant cyl1 for the hydrolock but the scanner gave me #4 so I'll do the checks you said the first time around-at the real #4-.

WOW, thanks for the quick reply and the wealth of info!
Just to clarify, the cyl I'm talking about (thought #4, may be wrong) is front bank extreme left as you open the hood- towards the bumper and towards the belt(s)-
this is where I saw hydrolok on a non-s/c series II bonne.

Ok, I'm talking ...

Hello,

I got this code (1995 riviera s/c vin 1) and using the scanner I got cyl#4 misfire. I noticed that if I bring the rpm's up to 1500rpm for a while and let go, the cyl will misfire, otherwise not-idle only-. then I revved a little more 2000rp and let go, it did not misfire again
I have new ...

Thanks a million!
That for sure simplifies things. No special tool ($$$) needed then. pheeew...
I'll get brave one day then;-)

Thanks for the reply!
Do you know if they machined the valve body to install an oversize valve, or just drop-in replacement?
Thanks

Hello,

I'm new here. My car, '95 riv s/c 160k miles (4T60-E) has the dropping out from 4th when hot issue (code p0740).
I was thinking to install an aux tranny cooler hoping it will temporary fix the issue.
Any recommandation on what brand(B&M, Tru Cool) and GVW rating would be appreciated. Also ...

Thanks for the reply.
According to the service manual it's under the side cover.
U're right, I should move the thread.

back on the topic of your rebuild, can you list the special tools you needed for this rebuild?
In my service manual there is a huge bunch of them... scary...
thx!

Hi,
Although I always loved the bonnevilles (mostly the early '90's and 2000) always ended up w/buicks! My first buick was a '91 park ave ultra (non s/c) and now I have a '95 riv s/c. My next car may be a 2000 bonne.
My other car is a '89 trans am gta 350.
I also have a bike, '98 klr 650.

Thanks,
J

Hello,
Nice post, really interesting
I'm new here. My car, '95 riv s/c (4T60-E) has the dropping out from 4th when hot issue (code p0740). I was thinking to install an aux tranny cooler hoping it will temporary fix the issue. If not, maybe a new sonnax TCC apply valve. If I understand correctly ...