Engine running rough like if has a misfire. Starts up with a high idle. Should it give a P code?
I think you could use this manual method instead.. My nephew use it to repair my car and it's totally repaired now. Here's the website he bought it from . reliable-store
SOURCE: 1989 honda prelude enigne idles high then low irratic
I had the same problem on a Rover. There was a leak in inlet manifold that was caussing the problem.
To verify, spray some sealant to temporarily seal the inlet manifold .and the eratic idling should disappear for some time.
If it does, you know there is leak in inlet manifold which you can take of and refit with a new gasket.
SOURCE: Buick Century 97 runs rough and stutters when cold and gas applie
start by replacing the plugs and plug wires, this is esp true if car has over 100,000 miles on it. damp air can make the problem worse.
Testimonial: "helpful"
SOURCE: have code for cylinder #1 misfire on 96 chevy
these were bad for the spider injectors to fail. they are hard to diagnose with out the scan tool. the poppets in the end of the injectors get clogged and will need to be replaced. pull the plug and see if its oil fouled. they also have a problem with the #1 cyl getting out of round and oil fouling the plug. compare it to another plug in the engine. if its oil fouled the engine is no good.
SOURCE: BMW Z3 rough idle on start codes read P1189 , P0173
all the codes you have are all related to the fuel trim, this problem needs to be looked at with a european capable scanner for futher tests sorry.
Testimonial: "Very helpful diagnosis"
SOURCE: 97 chevy pu 305 vortec, had cyl 6 misfire and
thats usually a sign of a vacuum leak, recheck and make sure you don't have any loose hoses, or cut intake seals
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