By Wes Stinson, Infiniti Moderator Tools used: 12 and 14mm socket, hammer (always on-call ), Diagram of the belts and tensioners Here’s the correct procedure 1. Loosen alternator tensioner 2. Remove alternator tensioner 3. remove alternator belt 4. loosen waterpump/PS tensioner 5. Remove waterpump/PS tensioner 6. Loosen AC tensioner 7. Remove AC tensioner 8. Remove […]
Q45 Chain Guides Removal / Replacement
By: Tangalora ———————————————————————– SUMMARY: 90-93 Q45 chain guide repair (hints, suggestions, procedures): ———————————————————————– Formulate a basic overview understanding of the situation at hand: The whole chain is under tension; but we use tension & slack terminology. The crankshaft pulls on the straight leg of the chain (the tension side). Then (terminologically) the curved leg is […]
Q45 Radiator Removal / Replacement
By: Tangalora Prepare your work environment: – Wear full coveralls & safety glasses (to keep grease out if nothing else); – Shove a shop rag in your back pocket & a digital camera in your front pocket; – Sweep the floor of your work area clean (you *will* repeatedly drop stuff); – Place the Q45 […]
Replacing Motor Mounts on an Infiniti Q45
By: Wes Stinson Diagnosis of bad motor mounts: – Set the parking brake – Put the car in drive – Place foot on brake as firmly as possible – Floor the gas pedal, release quickly – Have a helper (standing to the side) approximate the distance the engine moved – Anything over 1 inch and […]
Z32 Brake Upgrade Installation on a Q45
Installing Z32 brakes onto your Q45 By: Wes Stinson Here’s my parts list. 4 Brembo blanks (brand new) Z32 30mm calipers OEM pads 1 big and 1 small bottle of Valvoline synpower brake fluid Caliper grease Braided SS Z32 240 conversion lines OR You can use the factory lines*(SEE NOTE AT END) Speed bleeders Started […]
Q45 Rear Sway Bar Installation / Upgrade
Infiniti Q45 Rear Sway Bar Installation and Upgrade Steps Typically, your rear sway bar bushings will be hard and worn and deformed from years of use, so while you’re installing your new 20mm Active rear sway bar, I recommend new polyurethane bushings. Old and new side by side. Notice how much longer the OEM link […]
Infiniti Q45 Technical Data / Specifications / Capacities
Facts Built in Japan. Produced 1989-1996. Year-to-Year Changes (Src: Consumer Guide, some changes made) 1990 Infiniti Q45: The 1990 Q45 is the most sought after by performance enthusiasts for having the tightest and most responsive steering, quickest shifting, and an actual power rating of 300-305hp. Because of a “gentleman’s agreement” among Japanese manufacturers, vehicles above […]
Infiniti Q45 Rough Idle Diagnosis
Resolving Rough IdleBy Jesda Gulati Fuel Injectors – Bad gas or regional mixtures tend to result inearly injector failures. A fuel smell in the cabin also hintsat injector problems. Non-OEM injectors are not recommended.Learn how to test your injectors Fuel System- Purchase a can of BG44kfrom Infiniti of Scottsdale and add it to a 3/4 […]
Infiniti Q45 Glove Box Hinge Repair
Is your Glove Box hanging? Dangling? Living in the trunk? Do you not want to search for a new glove box hoping that it’ll be the right color and that the hinges won’t break on it, too? Why not manufacture some hinges of your own that are stronger than stock and much less costly than […]
Infiniti Q45 Fuel Pump Replacement
By: tangalora One morning, my 1990 Infiniti Q45 (125K miles) wouldn’t start: The 4.5 liter 8-cylinder engine cranked wonderfully, but would not catch. It wasn’t the starter motor nor the battery (as it rotated perfectly). As always, it had to be either gas, air, spark, compression, or timing. Following is an idealized path others can […]