Rep Power: 0

So, as the title states. '90 EX with the 1.6L Automatic. Just go the car for my kids to use for work and school etc. Ran great for a few weeks, now it's doing strange things. REALLY hard to start cold and can barely keep it running until it warms up. Buddy of mine said EGR valve...WHERE the @#$& is it? Found pictures of what it's supposed to look like online at NAPA and Auto Zone etc.....can't find it on the car. Also, I'm getting the sneaky suspicion that this isn't the stock motor for this car. Too many grease pencil marks on it like from the wrecking yard. Can anyone tell me where I can look on the engine block or head or wherever to get the engine code and verify this is the right setup for this car?
Any suggestions on the hard start and poor idle problems?
Thanks for any help.

 
Rep Power: 812

you should try cleaning out the intake system parts like throttle body and idle air and thermo valves. i doubt it has an egr valve, most older cars didnt. and that would not cause idle issues.

 
Rep Power: 0

True to what gearbox said. but you need to figuar out witch motor is in it. Dual point w/ only 2 injectors or multipoint with 4 injectors. To find the code look at exhaust manifold to the left of it where the block bolts to the tran will be a flat spot. If its a ex it should say d16a6. thats the stock code.
Does it only act up when cold? or even after it gets up to temp?

Jay
Fabricated Performance

 
Rep Power: 0

I replaced the IAT, O2 sensor, both temp sensors, thermostat, cleaned out the throttle body, and reset the ECM codes. Started up like it's supposed to finally. Only one more thing I need some help with. The radiator fan is on all the time that the ignition is on. If anyone has a wiring diagram of my car or a link to one somewhere on the web, it would be greatly appreciated. Thanks guys

 
Rep Power: 0

Oh, found the engine code. It is the D16A6. Still not certain it's the original, but oh well, it runs ok for what I need.

 
Rep Power: 0

The d16a6 is the stock motor for the car.. your good