Intermittent check engine light, code 42?
09-19-2001, 08:34 AM
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Intermittent check engine light, code 42?
Sometimes the car will be idling and it will stumble and die. When I restart, the check engine light stays on and the car runs but misses. I can pull over, turn off the car, then restart and the light goes off and it runs normal. The only code it's showing is 42. I've read the archives a little, and it seems that a connection might be the problem, but turning the key off, then back on cures it.
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'87 Formula WS6 - ZZ4 Crate TPI, SDPC ported heads, LT4 hot cam, 1.6RR, Accel runners, Accel lower, ported plenum, Edelbrock 58mm TB, Crane Fireball ignition, SLP cold air, SLP headers, !cat, Summit exhaust cutout, Walbro 255, Koni yellows, aftermarket panhard & LCA's.
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'87 Formula WS6 - ZZ4 Crate TPI, SDPC ported heads, LT4 hot cam, 1.6RR, Accel runners, Accel lower, ported plenum, Edelbrock 58mm TB, Crane Fireball ignition, SLP cold air, SLP headers, !cat, Summit exhaust cutout, Walbro 255, Koni yellows, aftermarket panhard & LCA's.
09-19-2001, 08:57 AM
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ok , i would go through all the connections thoroughly first, check the resistance of your pickup coil, and have the ignition module tested. i have a really good diagnostic procedure from my shop manual, just for a code 42 on tpi motors, if u like i could scan it later and send it to u..hope this helps.
matt
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87 IROC-z 305 TPI 5spd 10-bolt 3.73 posi ,8.8 Accel wires , bosch platinum +4 plugs,MAF sensor screens removed, gutted air box, ram air, K&N air filters,TB coolant bypass ,polyurethane tranny and torque arm mounts, K&N oil filter,Mobil 1 synthetic oil 20w50, futura GLS super sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims ,
400 sbc and a 6 spd in the works
matt
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87 IROC-z 305 TPI 5spd 10-bolt 3.73 posi ,8.8 Accel wires , bosch platinum +4 plugs,MAF sensor screens removed, gutted air box, ram air, K&N air filters,TB coolant bypass ,polyurethane tranny and torque arm mounts, K&N oil filter,Mobil 1 synthetic oil 20w50, futura GLS super sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims ,
400 sbc and a 6 spd in the works
09-20-2001, 09:46 AM
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Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
<font face="Verdana, Arial" size="2">Originally posted by Fastcamaro87:
ok , i would go through all the connections thoroughly first, check the resistance of your pickup coil, and have the ignition module tested. i have a really good diagnostic procedure from my shop manual, just for a code 42 on tpi motors, if u like i could scan it later and send it to u..hope this helps.
matt
</font>
ok , i would go through all the connections thoroughly first, check the resistance of your pickup coil, and have the ignition module tested. i have a really good diagnostic procedure from my shop manual, just for a code 42 on tpi motors, if u like i could scan it later and send it to u..hope this helps.
matt
</font>
email is clarkemustgonow@aol.com
thanks!!!
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09-20-2001, 10:38 AM
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ok ill get it to u later tonight if i can, i have my last day of finals today ..
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87 IROC-z 305 TPI 5spd 10-bolt 3.73 posi ,8.8 Accel wires , bosch platinum +4 plugs,MAF sensor screens removed, gutted air box, ram air, K&N air filters,TB coolant bypass ,polyurethane tranny and torque arm mounts, K&N oil filter,Mobil 1 synthetic oil 20w50, futura GLS super sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims ,
400 sbc and a 6 spd in the works
------------------
87 IROC-z 305 TPI 5spd 10-bolt 3.73 posi ,8.8 Accel wires , bosch platinum +4 plugs,MAF sensor screens removed, gutted air box, ram air, K&N air filters,TB coolant bypass ,polyurethane tranny and torque arm mounts, K&N oil filter,Mobil 1 synthetic oil 20w50, futura GLS super sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims ,
400 sbc and a 6 spd in the works
09-20-2001, 12:42 PM
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Car: 2018 Camaro SS
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<font face="Verdana, Arial" size="2">Originally posted by Fastcamaro87:
ok ill get it to u later tonight if i can, i have my last day of finals today ..
</font>
ok ill get it to u later tonight if i can, i have my last day of finals today ..
</font>
03-11-2003, 03:35 PM
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Car: 1990 Formula 350
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would you mind sending that diagnostic to ericswanson24@hotmail.com if its not too late...thanks
and fly89gta i was wondering if you solved the problem mine does that same thing with the ignition and restarting...thanks to you too
and fly89gta i was wondering if you solved the problem mine does that same thing with the ignition and restarting...thanks to you too
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