Search results

Hi all, I changed my transmission fluid in my 87 Turbo Buick as part of my spring cleaning and upon taking her out on a test drive afterwards the firm shift that I once had has noticibly gone away? The fluid I used was GM's latest Dexron fluid as I understand that it's backwards compatible...

Thanks for the info JM and the others below that have responded to my question. I will buy myself a fuel pressure gauge and note the before and after fuel psi, the hot wire kit that I bought was from Kirban Performance made by Caspers Electronics. I bought from Kirban because they had their...

Hi all, I have a stock 87 grand national and want to upgrade the fuel pump harness (Hot wire) so that I get the optimum voltage to the fuel pump. My question is: - will the incremental voltage shorten the life of the pump? - I understand that on the kit instructions it says "be sure to...

Question about: Fuel pump harness Hot Wire upgrade (Casper's Electronics): I was thinking about buying a hot wire kit for my 87 Grand National; the engine has no upgrades other than a K&N filter... will the incremental voltage from the hot wire harness affect (shorten) the life of the fuel...

I'm setting up my TPS and IAC in my 87 GN and a problem that I am running into is that the TPS once set at idle voltage of 0.40 volts cannot achieve the 4.5 volts at WOT and only getting 3.78 volts. I've checked and confirmed that I'm getting WOT at the throttle body blade and it seems like the...

Thanks for the detailed info..much appreciated. Tom

Is there a proper method of installing an IAC valve on a buick 3.8 litre engine i.e. how tight does the valve need to be when installing into the throttle body. Thanks for any information Tom

Can another GNX owner verify what speed their car shifts into OD. Mine seems to shift at ~40 mph + does this sound too delayed? Thanks

Can another GNX owner verify that the tachometer in their GNX IP does not light up as bright as the speedo or other gauges. I noticed that there is light illuminated around the tach but it's not very bright? Is there a fix for this? Thanks

Hello Shadow II, thanks for your reply. I don't know much about the Buick Turbo engines and the car that I have has only ~12,000 miles and is stock. How I came across this in my car is trying to race a mustang on a "roll" going about 20 to 25 mph. I had the car in drive and when we counted...

Question: on a 87 GN with a 3.8 litre engine when I go WOT with the car at a roll at 20 to 25 mph and I pull back the gear selector from "drive" to low 1 is it normal that the engine cuts out? But if I pull back the gear selector to low 2 instead of low 1 the car doesn't cut out, I'm...

Hi there, may be you can help me answer a question regarding my GN's cooling system: I'm about to do a rad flush and wanted to use a flush chemical to remove the scales inside the radiator but was told that I should use distilled water? can you tell me if it's necessary to use distilled...

Richard, I'm not too technically inclined when it comes to oil chemistry. I purchased my Turbo Buick with 11,850 original miles and I'm positive that the previous owner never used ZDD Plus. Is it too late to start using ZDD and how can I tell if my camshaft lobes have already started to...

Hi there, you sound very knowlegdeable about the buick power master brake system. can you educate me in how the brak accumulator bowl works? I recently ordered one from Kirban and I couldn't believe how heavy this item was. When I get around to installing it do I need to coat the brake...

would a hot wire kit be benificial or noticible for power gain on a stock 3.8 litre motor? The car is only driven on the street with no mods. Thanks in advance

Has anyone tried using a different spark plugs on their 3.8L engine and got better performance other than using the factory suggested copper plugs? i.e. I was thinking about installing some E3 spark plugs or other platinum plugs. Tommy

Richard, you are correct about the rear coil springs in my GNX, the right side had a tag of SJ and the left with PZ. I bought two new ones from Highway Stars (they had no tags on them) and the coils spacing are identical to the SJ, my ride height is much better now with a variance of less...

I've received my new Delco rear springs from Highway Stars and installed them. The right side which was the lower height is now fixed and matches up to the left side within less than 0.25" in ride height. See the attached picture, the faulty spring is on the right. Tommy

any idea what the "SH" or "HS" stands for? just curious