http://www.grandprixforums.net/ L36 (1997-2003 Model Years) L26 (2005 Model Year) en Wed, 08 Sep 2010 00:14:04 GMT vBulletin 60 http://www.grandprixforums.net/images/styles/grand/misc/rss.jpg http://www.grandprixforums.net/ http://www.grandprixforums.net/hv3-install-question-36160.html Tue, 07 Sep 2010 21:31:36 GMT Ok, I've been looking into my HV3 install, I see that I have to unbolt the fuel rail and alternator to lift off the UIM. I read that while I have those off, I should replace the o-rings on the injectors. Do the injectors just lift out with the fuel rail, or do the o-rings sit between the fuel rail and the injectors?

Thanks for the help,
Kevin ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) Empirecrzy241 http://www.grandprixforums.net/hv3-install-question-36160.html http://www.grandprixforums.net/l36-l26-36142.html Tue, 07 Sep 2010 13:25:48 GMT how can i tall if my car is a L36 or L26. its a 05 gt. its a n/a thanks how can i tall if my car is a L36 or L26.
its a 05 gt. its a n/a

thanks ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) cjim http://www.grandprixforums.net/l36-l26-36142.html http://www.grandprixforums.net/rattling-engine-bad-ideling-gears-slip-when-going-up-hills-sometimes-36136.html Tue, 07 Sep 2010 04:31:34 GMT i have a 2000 GrandPrix GT 3.8 and about 2 months ago my car statred to make a bad ratling noise in the engine and it is loud. it also makes my idle... i have a 2000 GrandPrix GT 3.8 and about 2 months ago my car statred to make a bad ratling noise in the engine and it is loud. it also makes my idle very speratic. then the other day when i was drivin i had my car on cruise and i was going up a hill and it felt like my car was trying to shift gears but it started slipping gears.....i am no mechanic but i am doing my best to describe it but idk what it is and i really need help with it.

idk if this helps but right before it started happening i was coming over a hill on a gravel road and there was a huge truck comin over the hill and i either had to go head on, take the ditch, or go half way off the road and start riding over big gravel clumps. needless to say i hit the clumps and it put a huge dent in my radiator but nothing was leaking so idk if that would have anything to do with whats going on with my car... ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) jordonr http://www.grandprixforums.net/rattling-engine-bad-ideling-gears-slip-when-going-up-hills-sometimes-36136.html http://www.grandprixforums.net/doing-top-swap-what-do-i-do-36130.html Tue, 07 Sep 2010 02:30:27 GMT doing a top swap what do i do? got s/c is there any thing else to know and can i go back to n/a for the winter? ps how much time does it take to do?... doing a top swap what do i do? got s/c is there any thing else to know and can i go back to n/a for the winter? ps how much time does it take to do?

Thanks in advance ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) 02PrixGT http://www.grandprixforums.net/doing-top-swap-what-do-i-do-36130.html http://www.grandprixforums.net/exhaust-what-do-you-think-36128.html Tue, 07 Sep 2010 02:04:33 GMT so I've been thinking really hard about some different exhaust idea's and this is what I have come up with. I already am getting a U-bend delete, replace the stock res with a cherry bomb glassback or a Thrush glassback and a lot of people where I live have 40 series flowmaster so what do u think ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) MakeitLouder97 http://www.grandprixforums.net/exhaust-what-do-you-think-36128.html http://www.grandprixforums.net/lim-gasket-head-gasket-bad-sensor-36110.html Mon, 06 Sep 2010 18:00:56 GMT I've been researching and troubleshooting this problem for weeks now but I'm starting a job 1.5 hours from home tomorrow and don't trust the GP right now. So to the rental agency I go!

But on a serious note, I honestly can not find a solution to the problem (which yes there could be more than one). But any and all input would be quite beneficial and appreciated. Here is the problem:

Car: 1999 GP GT, 3800 VIN K with 102K

Stalling. Over the summer, I was driving the car maybe once a week ... in stop & go Boston city driving. The car would stall 2-3 times on a 5-10 mile trip when coasting or at a stop. I figured b/c not driving it often, the computer wasn't adjusting properly. I've been driving it daily the past 2 weeks and seemed to have fixed itself. Initially it was at city speeds, but also died on me on a highway trip going 60 mph. Vacuum fitting are somewhat corroded, but I have siliconed everything I could find until I can afford a new set ($200 from the dealer!)

Ticking. In the past month, ticking has been coming from the lifters. At first it seemed to be coming from the front, then more recently from the back. It would go away though after pressure built up. Low oil? Low oil pressure? Either or... I did a change last week and the problem has seemed to vanish.

Overheating / Leaking. I put in a new thermostat and radiator cap in after the cap blew about 18K mile ago. Good to go. After the oil change last week, the car seemed fine. After a 400 mile trip over 3 days though... I have some serious overheating/rough idle issues.

- Cap was bad again. Replaced and now have vacuum pressure (I could squeeze the upper radiator hose completely before).

- However, now the car warms up and warms up fast. I can sit on the gas at about 2K rpm in the driveway and the car will be up to 210F in under a min from a dead cold start. And after 5 min of 40 mph driving, its over 235F but not "overheating".

- Low coolant. Light has been on for over a year so I lost faith in that aspect awhile ago. I've put a gallon of Dexcool in the past week both from the reservoir and straight into the radiator from the cap though. Still very low (reservoir empty this morning) and NO signs of leaks under the car.

- No white smoke from the tail pipes, but a lot of condensation on hands.

- The car is sluggish.. had complete loss of power at 25 mph yesterday from cold start. Pulled over, turned off and on.. and I got home ok. Still idling/running somewhat rough.

- Wouldn't start... once. When car "overheated" to about 240-245F, I pulled over and shut her off for about 5 minutes. I know the computer shuts off coils/cylinders? in this instance to prevent further damage.. but it wouldn't start at all. It would struggle for gas it seemed and would cut right out. After a minute and giving it some gas (2-3K rpm) it finally started but was really struggling to stay running. I limped home.

- No signs of coolant in oil. No milky-ness. Fresh oil change, bad or good to decipher?

These (-'s) are my symptoms. Out of everything I have found... I think its the LIM gaskets. Could be easy fix, but want to be reassured before I waste time and money. But from reading the forums, it could be a Head gasket, a sensor of any sort (MAF, radiator temp, ...??), or even the computer could be bad or needs to be reflashed.

Any and all help would be appreciated. Although I don't post or respond that much, I read them all the time. ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) GTFiske http://www.grandprixforums.net/lim-gasket-head-gasket-bad-sensor-36110.html http://www.grandprixforums.net/broken-injector-tip-36061.html Sun, 05 Sep 2010 15:16:04 GMT Hello all. New guy here. Been lurking for a while but never posted. While replacing the injector o-rings last night due to installing a new... Hello all. New guy here. Been lurking for a while but never posted.

While replacing the injector o-rings last night due to installing a new UIM, one of the orange tips on the injector decided to crack off in 3 pieces. Since the o-ring is what seals it in the LIM, can it still be used or do I need to buy an entirely new injector now?

Jay ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) FordMan77 http://www.grandprixforums.net/broken-injector-tip-36061.html http://www.grandprixforums.net/otto-racing-strut-bar-36042.html Sat, 04 Sep 2010 20:47:53 GMT can this strut bar for the 03 gp fit on the 07 gp thanks, and is there anyother ones besides this one thanks 97-03 Pontiac Grand Prix Front... can this strut bar for the 03 gp fit on the 07 gp thanks, and is there anyother ones besides this one thanks


97-03 Pontiac Grand Prix Front Upper Strut Tower Bar: eBay Motors (item 360289112190 end time Sep-09-10 13:06:00 PDT) ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) sca555 http://www.grandprixforums.net/otto-racing-strut-bar-36042.html http://www.grandprixforums.net/gas-gauge-36032.html Sat, 04 Sep 2010 14:47:49 GMT Alright, my issue is sometimes when I start my car after it sitting for a while my gas gauge goes all the way up to full and stays there for a while... Alright, my issue is sometimes when I start my car after it sitting for a while my gas gauge goes all the way up to full and stays there for a while then it slowly goes back down to wherever its supposed to be, anyone else had this issue? Thanks ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) uNda6gT http://www.grandprixforums.net/gas-gauge-36032.html http://www.grandprixforums.net/2001-grand-prix-gt-36011.html Sat, 04 Sep 2010 00:20:17 GMT ok the problem i am having is that my spedo wont work all the time and it willl randomly work any ideas i know its not the sensor on the diff ok the problem i am having is that my spedo wont work all the time and it willl randomly work any ideas i know its not the sensor on the diff ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) nascartech http://www.grandprixforums.net/2001-grand-prix-gt-36011.html http://www.grandprixforums.net/04-shorter-dog-bones-35990.html Fri, 03 Sep 2010 04:52:04 GMT where can i get 04+ shorter dog bones them besides zzperformance and 3800 performance, thanks. where can i get 04+ shorter dog bones them besides zzperformance and 3800 performance, thanks. ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) sca555 http://www.grandprixforums.net/04-shorter-dog-bones-35990.html http://www.grandprixforums.net/valve-springs-push-rods-er-rockers-35947.html Thu, 02 Sep 2010 02:56:39 GMT I am looking for advice on a set of valve springs for ZZP's ER rockers.
GM's 90lb yellow springs seem common but I am looking for something that wont screw my timing chain and dampener. Any recommendations?

My push rods may also get replaced. Stock length and 5/16". Are Intense lightweights okay? Comp Cams? Any other options?

Are zzp's modified retainers or intense, Manley LS type retainers a good idea? Are new valve locks necessary?

I will also be using Viton valve seals and ZZP's rocker install kit.
Thanks for the help. ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) Rust http://www.grandprixforums.net/valve-springs-push-rods-er-rockers-35947.html http://www.grandprixforums.net/headers-35883.html Tue, 31 Aug 2010 18:34:31 GMT i have a 2007 l26 would the speed daddy headers work for my car or would i have to do a top swap, would a down pipe be something to consider and... i have a 2007 l26 would the speed daddy headers work for my car or would i have to do a top swap, would a down pipe be something to consider and would a dual straight pipes sound good with the above mods? thanks ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) sca555 http://www.grandprixforums.net/headers-35883.html http://www.grandprixforums.net/1-8-1-84-1-9-rockers-35876.html Tue, 31 Aug 2010 14:53:11 GMT Sure you guys have probably heard this before. Ive decided to go the rockers route. Whats the significant difference between 1.8, 1.84, and 1.9. I... Sure you guys have probably heard this before. Ive decided to go the rockers route. Whats the significant difference between 1.8, 1.84, and 1.9. I read on zzp that 1.84 are the highest you can do with stock valves, but will this kill the valves instead. It looks like 1.8 is playing safe, but what would be my gain difference between the three. If i get 1.9s im getting 105# valves, but is it gonna be that big of a difference from just getting 1.84s? Thanks for reading.

PS: Am i missing any supporting mods? Except for retainers and locks and rods, stuff like that. ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) bjermane1 http://www.grandprixforums.net/1-8-1-84-1-9-rockers-35876.html http://www.grandprixforums.net/rough-starting-35869.html Tue, 31 Aug 2010 01:36:42 GMT HI, I have a 1997 Pontiac Grand Prix. The car has been quite reliable for the most part, but recently once I crank the key it takes around 3-5... HI, I have a 1997 Pontiac Grand Prix. The car has been quite reliable for the most part, but recently once I crank the key it takes around 3-5 seconds to turn over. I've recently purchased a new battery, starter, and fuel pump. So those are automatically ruled out. I was told the culprit of the problem could possibly be the FPR (Fuel Pressure Regulator). Help please!!! ]]> 3.8L V6 Naturaly Aspirated (L36)(L26) Darrylakagodfather http://www.grandprixforums.net/rough-starting-35869.html