1996 I30t Wont Start..... Help

[Myxlplyxxx]

Yesterday @ 55mph the car just stopped running.... still cranks good.... shop says not the fuel pump.... cranking is sufficient... no pulse at the injectors... not sure about spark.... but front cam is still moving so prolly not timing belt...
any thoughts???? thnx in advance!!!!


Eric

[Nahkapohjola]

Originally Posted by Myxlplyxxx

... not sure about spark.... ..

Can u run self diagnostics? Sometimes it can give a hint wassup.

Check supply voltage; +12V and ground - at computer. If thats ok, then possibly cam pos signal is missing. If no voltage, then ign sw broken, wire loose or bad relay... (FYI: relays are color coded and can be test-swapped = problem 'moves' if u hit the trouble spot))

Spark: find any spare plug, pull one coilpack/wire & install, ground it on engine and crank. Spark should be visible at the gap...

[Myxlplyxxx]

Mech I know said it could be the theft deter... guess it disables the injector pulse and ign. so car wont start..... said to disconnect batt. touch +and- cables then reconnect batt. and try... Any thoughts????

[Nahkapohjola]

Originally Posted by Myxlplyxxx

Mech I know said it could be the theft deter... guess it disables the injector pulse and ign. so car wont start..... said to disconnect batt. touch +and- cables then reconnect batt. and try... Any thoughts????

Alarm ON disables at least inhibit relay (=no crank). Thus I cant believe in this theory... Whatever, no harm done connecting non powered cabling.

As said, check the power supply at computer. Lots reasons why pwr can become cut off AND that causes no inj/spark. (Injector driver FET (?) components are inside the computer box.)

[Nahkapohjola]

Btw, shorted MAF can 'hang up' ECU and 'kill' the engine. Easy test for that is unplugging MAF connector: will start with 2k rpm ceiling (in safe mode).