What could be wrong with my 1993 Toyota Camry? I have changed the pcv valve and had a tune up and put a valve cover gasket on and a new air filter and a fuel filter and a gasket to go on the manifold. So, what could be wrong. when we put it in reverse and drive it putt putts and sometimes cut off and when you are getting ready to put your foot on the gas peddle.
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Re: 1993 Toyota Camry
I assume that it is starting & idling OK, yes?
First, please look and be certain that the air intake tube that attaches to the end of the intake manifold is not loose, but really tight & secure, and make sure that there are no cracks anywhere on this tube. Secondly, if you do not have genuine Toyota plugs in your engine, you may encounter problems, replace them with the correct plugs. Third, replace the wires if they are over 5 years old.
Fourth, look for any vacuum lines that may be disconnected or crossed.
These are the usual causes, hope this helps.
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Remove wiper arms/ Remove wiper assembly/ Alternator/ Power Block/Remove intake manifold/ get new gaskets for that/ valve covers are now easily accesible . Great time to change the spark plugs and wires now. PCV valve/ Air Filter/The gaskets for my 3.3 '99 caravan were the thick rubber, and cost $120, For Valve cover gaskets, Get "THE RIGHT STUFF" and you can make your own set, black silicon gasket maker. Reassemble
Three seals to check. easiest is the valve cover seal. Number and remove the 4 wires going into your spark plugs. remove 4 nuts holding the cover and replace seal.
Next easiest is the distributor O-ring. Remove air filter assembly remove the distributor cap, then the distributor. With the valve cover still off, loosen the 2 bolts that clamp the distributor down. Remove the 2 terminal leads going into the distributor (4 wire terminal/2 wire terminal) Mark the case of the distributor and the case of the head with one line so you can line it back up on reinstallation. remove the 3 bolts holding the distributor down. Replace O-ring. replace distributor, align, tighten the 2 bolts, then tighten the 3 bolts. replace terminal wiring and cap. replace air filter assembly. Replace valve cover with new gasket. Place spark plug wires back into their proper places. The last one is the oil pan gasket. Drain all oil and remove all blots holding the pan. drop the pan and replace the gasket. Put it all back into place. Do not over tighten the pan bolts as this will cause the gasket to deform, making it leak again.
replace the IAC valve (idle air control valve)!! This is located below the throttle body, usually grey colored with a wire harness connected to it. This sensor controls air flow through the intake, if dirty or sticking it will cause stalls. Also check if all hoses and vacuum lines are tight and not leaking.