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1990

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Question
I do not know how many motor mounts there are?
This engine is mounted on two liquid filled motor mounts. The engine mounts are located near the front sides of the motor and has one on each side. The mounts are different for the left and right. The transmission mount...
Question
Engine takes to long to warm up I've replaced thermostat already and it misses horrible till it warms up its a 4.9 engine
This engine uses a cooling fan clutch that controls the fan speeds on demand when the engine radiator starts to get hot if increases air flow to cool the engine down and slows the fan when it needs to increase...
Question
My car shuts off at 40mph and i have to restart it
Hi there: In many cases when a vehicle simply shuts off while under operation it is caused by a main relay that is failing or a distributor issue. Most professional mechanics will begin to trace this issue by determining if...
Question
My left tail light does not work.
You will need to check the bulbs and sockets in the left tail light. The wiring to this light for the tail light is spliced together with the right side. The left turn and brake lights go through the multifunction...
Question
Brake lights stay on all the time.
Hi there. The most likely cause for the brake lights staying on is, a faulty brake light switch. Another possibility, would be a short to power past the brake light switch and disconnecting the brake light switch would isolate whether,...
Question
Engine doesn't wanna warm up
You should have the vehicle checked to see if the engine is not running hot enough or the coolant sensor is not reading the correct temperature causing an incorrect gauge reading from the engine actual temperature. If you have already...
Question
Engine takes too long to warm up runs poor until it warms up.
There is only two possible causes of an engine running colder than it is supposed to. The fan clutch may be locked up and would cause a load on the engine and excessive airflow across the radiator not allowing the...
Question
Engine takes to long to warm up I've replaced thermostat already and it misses horrible till it warms up its a 4.9 engine
These engines are known to get real bad carbon build up on the back sides of the valves. If you engine has a hard time getting to operating temperature then it will also cause the engine to carbon up even...
Question
Do I need donut gaskets for the exhaust manifold?
If the exhaust does not have a leak as a result of the missing gaskets, I would not recommend going through the trouble of having them installed. However, the moment that the exhaust starts to leak out of the manifold...
Question
Infornt of radiator brace there is a metal tag that has this 00_941 what is it
This tag is likely a part number or a replacement number tag for a particular part on the front of your vehicle. If nothing is damaged, I would disregard the tag. If your curiousity gets the best of you, I...
Question
Hoses keep collapsing
When the radiator hoses are collapsing, this is due to a faulty radiator cap. I would recommend having the radiator cap tested to determine if it is functioning properly. If the radiator cap is malfunctioning, I would recommend having the...
Question
No brake lights 1990 Mercury Grand Marquis
Hi there - check the fuses for the brake lights, the brake light bulbs, and the ground for the brake lights (should be OK since other lights work, but....). If these check out correctly, check for power to the brake...
Question
Heating works only on defrost and works only at high speed
A car that old is not going to have self diagnostics in the heat AC system. So you don't need to bother with checking codes. Most cars use engine vacuum to control the heater flaps, and the defrost is the...
Question
Stalling at cold start, runs fine when warm
Diesels are in fact notorious for being cold blooded by nature and can be even worse on cold starts. This is mainly due to the manner in which diesel fuel is ignited vs regular gasoline. Diesel fuel has a much...
Question
car running very rough, making oil 1990 Nissan/Datsun 300ZX
Hello - I suspect your cold start system has gone "full on" or you have leaking injectors. Without question your fuel system is pumping way too much fuel into the intake, leaking past the piston rings, and entering the crankcase....
Question
What headers are good for this car we can't find one that is good need help?
Hello there, exhaust manifold or header issues are common on your 1990 Toyota Celica. The best bet for finding a proper fitting exhaust manifold is to get a OEM or OEM replacement part. This indicates the part will function and...
Question
The clutch lever that the slave cylinder pushes is not pushing/springing back
It sounds like you may have to replace the clutch. Clutches can fail in a number of different ways and exhibit a multitude of symptoms. Most people are acquainted with clutches that slip from simple wear, but it sounds like...
Question
Sputtering problems
Hello. Engine sputtering and performance issues can be caused by many things. If you have already replaced those components then I would move on to looking at a few other things. Issues with the ignition, engine management, or fuel systems...
Question
Clutch Issues 1990 GMC K1500
Hello - did you replace the pilot bearing? If it is seized, the clutch will not disengage. It is also possible that there is still air in the clutch hydraulic line, and the slave cylinder is not making a full...
Question
no start issue 1990 ford ranger custom v6 2.9l automatic RWD
If, by chance, the fuel has been in the fuel tank "for a while", it won't burn, at least not in an engine. So, the first thing to consider is the age of the gas. The plugs do have to...

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