1993 Acura Integra has starting issues.
Had mechanic check dist sensors and all reported corect OHMS. Had him check error code and said it showed a 5 which is the MAP sensor. Replaced MAP sensor and still have starting issue.
Car typically starts fine but on occasion will not start at all. After driving the highway for 10 miles, car will not start. Wait around two hours and it starts fine.
If the dist sensors are ok, the MAP sensor is new, spark shows up am I left with it probably be the distributor needing to be replaced?
If it is a fuelproblem, the moost likely cause would be a bad PGM-FI main relay. This component is known to intermittently fail and weather affects it operation. Remove the relay and check the circuit board, if there are signs of soldered joint having cracks, resolder them and it should be good.
January, 16, 2011 AT 7:35 PM
Looked and looked for the PGM-FI relay and can't seem to find it. It's not where my repair manual says it should be so, I'm lost as to its location. Can you point me to an accurate location?
January, 16, 2011 AT 10:06 PM
Under left side of dash, left of steering column.
January, 21, 2011 AT 8:54 PM
Thanks! I purchased a new one from NAPA and immediately had starting problems and a check engine light come on. Just returned it to NAPA and got another one and the car initially started up fine but, ten minutes later, wouldn't start at all, Installed old one and engine starts. Could NAPA have TWO defective main relays in a row?
January, 21, 2011 AT 11:28 PM
That is possible. Remove your old relay and resolder all the joints, it should solve the problem if it is bad.
If it is not the fault of the relay, you are looking at the possibility of a bad ECM.
January, 22, 2011 AT 5:41 PM
I ended up reading the code for the check engine light that had appeared previously and and it was 6. I saw where that indicates the electronic temperature sending unit as the problem.
Purchased a new one and when I was under the hood I couldn't figure out how to release the wiring harness from the old one. Is there a site showing harness connections and how to release them?
January, 22, 2011 AT 6:52 PM
The ECT connector is plugged in and you have to press a tab to release the lock before you can pull the connector off.
I don't have any diagrams to show you but if you look at the IAC or IAT connectors, you would be able to understand how it works.
January, 23, 2011 AT 7:49 PM
Ended up just breaking the #@@$% thing off since nothing or no one could get it off. Replaced sensor and looks like the starting issue has been solved after replacing the MAP sensor, Main Relay and ECT Sensor. Problems continued to exist until the ECT sensor was replaced so, for future reference, it looks like that was the main culprit. I ended up replacing valve cover gasket, plugs and oil tube seals as well, because of oil leakage onto the the spark plug wires.