20 Most Recent 1990 Oldsmobile Cutlass Ciera - Page 8 Questions & Answers

I would clean or replace the ISC (idle speed control) sensor, this sensor is what controls the idle speed of your engine.The sensor screw in to the side of the throttle body.will have a four wire harness connector going to it.

Check the fuel pressure. Sounds also like symptoms of a clogged convertor.

If this is a 2.5/ 4 cylinder,the filter is in the oil pan,it is a big nut,it also drains the oil.

check ur igniter module it needs to be replaced or ur wirerinb to the module

Check under your left leg for the little joystick.

here is the whole set up, if u can't see image please go to the link.
http://autorepair.about.com/library/firing_orders/bl-fo-10105.htm

Make sure the HT leads are secure. They might be popping off, causing it to not fire on one cylinder. I always change the plugs and leads at the same time to keep them the same age. HT leads break down rapidly and need regular replacement.

have to reach over the top of the motor.
might need to lay on top of motor to reach over use a ratchet with a
swivel joint and spark plug socket.

if you have a chip in your key you may what to have the ignition lock checked,there are contacts in the ignition that read the chip, sometimes they get stuck and dont pop out and read the key, this in turn doesnt turn on the fuelpump,look inside switch with a light and use a small pic, push on each sensor and it should pop back out if not try spraying a little wd40 on it and work it free by push it gentle until it pops out there are two sensors you will see them at the begining on the key hole.

The igniton module & Engines computer may be at fault as well.
If all fuses look good from what you can see no othrers are hidden
The ignition module sends a signal to open each injector which is sent to the computer. The computer thens opens the injector up to pass fuel to the spark plug

Disconnect the engine torque mount on the top front , then you can pull the engine forward enough to reach the rear plugs

either something is bent or shifted out of line, an alignement shop can tell you what you need

What is the rim size? Is that number the tire you want or the tire you have on there now? The size you show is a 15 inch tire, The 225 and the 75 are denominators of tire height and width. The 15 is the rim and the R is radial. Most cars, all cars start with P, passenger, some have a speed rating, Z, or X, the 75 is 3/4 the width= the height, 225 mm wide, something like that. Hope this helps.

Fuel filter or pump. Get the pressure checked

I would say about 3/8 inch diameter, 2 to 2 1/2 inch length bolts. The parts store should have the right size in stock. Good looking ahead. The bolts usually get stuck in the steel sleeve in the bushing. So breaking the bolts or cutting the head and nut off, is often in order. Also spray everything with WD-40, that always helps.

check and replace any leaking gaskets. If there is no leak what so ever, then it is likely burning up due to worn piston rings. You can try a bottle of smoke away. If it is leaking and it is small, then a bottle of stop leak should do the trick

The thermostat should be just off of the engine. Just follow the main rad hose from the radiator. Post if you need more.

to get good leverage use a serpentine belt removal tool. the bolt should be on the base.