20 Most Recent 1990 Pontiac Grand Prix - Page 5 Questions & Answers

yes u can just make sure the crank is rotated to the other side also make sure you change oil and filter because particals can get sucked up into the oil pump

run a remote wire from the radio or any fuse in the fuse panel

Crank sensor

You need to put a mechanical gauge on there and check actual oil pressure...problem may not be the switch but in fact there may be no pressure. Does the engine make noise when running? Do you have the correct switch? What was the problem that caused you to replace the switch?

chek your shifter linkage

You need to get a gauge hooked up to see what the actual pressure is. (a garage can do this if you can't get ahold of one.) This will tell you exactly what the oil pump is, or isn't doing. The gauge threads in where the sending unit goes.

check to see if its getting spark and if its yellow it could be either the control module, or the coils thereselves

next to the oil filter in the front of the motor

This could be falty plugs, plug wires, clogged fule filter or injectors or distributors. Start by checking one at a timek a process of elemination.

If there is no noise when the pressure shows zero, your engine is probably fine but the sensor is shot. Cost on these is probably under $50 US and replacement is normally easy.

cant help onj this one because we just dont have this model here in spain,but i have seen how some of these engines are squeezed in on other american tanks ,personally i think i would have dropped the subframe and dropped the lot out

If the car ran good before you put that sea foam in the tank, there's your problem. I haven't heard one good report about that junk, some swear by it, I've always used that techron injection cleaner, and never had any complaints.

You can find out at a part store by either asking somebody or looking through a Chiltons/Haynes book on your make, model, and year.

GM cars don't use a fuel pump reset switch, they use an oil pressure fuel cut off sensor, same thing different way of doing the job, it the engine stops with the key in the on position or u loose oil pressure the fuel flow stops..

Code 22 is Throttle position sensor was under 0.25 volts for 4 seconds after ignition was on. Code 34 is map sensor voltage was too low for 1 second under 600rpm or over 600rpm. A tps must be set with a voltage meter or scan tool for correct operation. Check the map sensor vacuum hose for leaks.

check the fuel pressure it could be the fuel pressure regulator

When you remove your vehicle from park, the idle air control valve (electronic choke) operates to keep enough air going into the motor while you aren't using the throttle so it will stay running. If it is too dirty it can't move properly...you'll stall.
Pull out and clean or replace the idle air control valve.

Mass air flow sensor.

lock up solenoid in trans may be your problem

could be your lock-up solenoid. this is located in the transmission. check for a code