My car has always been brutal to start so today I pulled the throttle body and idle air control valve>
The IAC was a little sooty but tested okay for resistance, the service manual said 40-60 ohms and it was right on the button at 50. I cleaned and reinstalled it, and the throttle bore and throttle plate were basically clean. Very little material on it, basically just varnish, and nothing that should impede operation.
I have had my scan tool hooked up to it and it shows all sensors reading properly from cold to hot.
What's the next place to look? I don't have any fuel starvation issues at full load, so I don't think it's fuel pressure related. It's always started this hard, even with new plugs, but I am going to Denso Iridiums to see if it helps.
Also, another thing is the engine fires easiest in extreme cold. I can turn the key and it barely turns over before starting, it's like striking a match.
Ideas? The engine is a GM 3100 V6 (LG8) and has been this hard to start since we got the car at 25,000 miles.
The IAC was a little sooty but tested okay for resistance, the service manual said 40-60 ohms and it was right on the button at 50. I cleaned and reinstalled it, and the throttle bore and throttle plate were basically clean. Very little material on it, basically just varnish, and nothing that should impede operation.
I have had my scan tool hooked up to it and it shows all sensors reading properly from cold to hot.
What's the next place to look? I don't have any fuel starvation issues at full load, so I don't think it's fuel pressure related. It's always started this hard, even with new plugs, but I am going to Denso Iridiums to see if it helps.
Also, another thing is the engine fires easiest in extreme cold. I can turn the key and it barely turns over before starting, it's like striking a match.
Ideas? The engine is a GM 3100 V6 (LG8) and has been this hard to start since we got the car at 25,000 miles.
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