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when the car is warm the engine seems to choke
Car: Acura, Integra, 1994 - Back to Fix-It - Acura Integra Repair Manuals
Q.I have a stick-shift 1994 Acura Integra RS. After driving for some time when the car is warm the engine seems to choke.
It happens at any speed in any gear, usually after 2500 RPM. It feels like if something blocks the cold air intake for a second and the engine just chokes because lack of air. A second later the car will just shoot out and continue driving normally. It often happens when i Rev up high and shift quickly to the next gear, the car will just "lock up" for a second and jump out and continue driving as normal.
This starts happening when the car has been driven for a while and the engine is hot, when i first turn on the car and drive it around for a good 20 minutes its fine. Ive Changed fuel pump, ignition cables, air filter, spark plugs, fuel filter, distributor, MAP sensor, TPS sensor, Speed Sensor. Motor runs good and strong. No Check Engine. I've heard it could possibly be a clogged cat, short circuit in my harness, bad ECU, or problems with my ignition. Any Ideas??
I already checked/done: FUEL PUMP, FUEL FILTER, MAP SENSOR, TPS, DISTRIBUTOR,
Answer An easy way to see if its a clogged cat is to disconnect the pipe from the exhaust manifold and drive it. See if it still boggs. Give it a try to rule out a clogged exhaust.
Addition Yes, i've tried that, and ruled out that possibility. So its not a clogged cat, distributor, no sensor because i have no check engine light and STRAUSS auto checked my sensors. Since this problem began the same night I got my new fuel pump installed, I'm thinking it would be the electrical wiring for the pump. Then again, turn on the car and drive for 20 minutes, the car is fine, the hotter the car gets, the more it does it. I am also thinking maybe a bad ECU that overheats and acts funny. What do you think?? It definitely seems like an electrical problem.
Answer Well the next thing i would do is check fuel pressure. They sell gauges especially for this. See what the pressure is at idle and while driving than see what it is while the car is acting up. If the pressure drops of drastically than there is definately a problem with the fuel. Wether it be pump or electrical thats what we need to find out.
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