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Starion With A Bad Problem, backfire, stall, and wont hold boost

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sandman88 View Member Profile	Oct 4 2008, 07:16 PM Post #1
Newbie Group: Members Posts: 3 Joined: 4-October 08 Member No.: 65,399 Status: Location: usa Drives: 1988 mitsubishi starion	I have a 88 starion. the car was running fine but then all of a sudden it started acting up. the car starts right up no problem but sometimes it revs itself up and down. when i gas it starts idleing fine. if i drive it for more then 15 min it starts bogging and it doesnt hold the boost. i cant boost because it backfires bad and it starts to bog. a got aftermarket injectors and i heard that that was the problem. its running real rich and i have a code that says its the o2 sensor. if i turn the car off and disconnect the battery and connect it again it runs fine and it holds the boost but for like 4 min then it starts again. if you have any suggestions on wut it will be i would greatly appreciate it. thanks in advance for your help

zeggawong View Member Profile	Oct 7 2008, 12:17 AM Post #2
Newbie Group: Members Posts: 2 Joined: 15-September 08 Member No.: 64,395 Status: Location: South Australia Drives: 1983 JA Starion	Ive got the same problem. Anyone got any ideas?

BDperformance View Member Profile	Oct 26 2008, 06:13 AM Post #3
Full Member Group: Members Posts: 83 Joined: 21-March 05 Member No.: 7,882 Status: Location: SAN ANTONIO, TX. USA Drives: 85 starion, OWN 2 87'S & 2 88'S	could be air flow meter, the intake boot(between air can & turbo) injectors hooked up backwards. yes ther is a right way & a wrong way to connect them (-/+) & primary/secondary. have a look @ those first.

sandman88 View Member Profile	Oct 26 2008, 05:08 PM Post #4
Newbie Group: Members Posts: 3 Joined: 4-October 08 Member No.: 65,399 Status: Location: usa Drives: 1988 mitsubishi starion	The injectors should be hooked up right but just in case do you know or have the wiring diagram

seeker View Member Profile	Oct 28 2008, 10:57 AM Post #5
Newbie Group: Members Posts: 15 Joined: 24-December 07 Member No.: 49,829 Status: Location: USA Drives: 89 Conquest TSI	i would bet that your coolant temp sensor is bad. aslo a good idea is to check your TPS and reset the ISC motor. check out this site www.starquestgarage.com

BDperformance View Member Profile	Nov 8 2008, 02:15 AM Post #6
Full Member Group: Members Posts: 83 Joined: 21-March 05 Member No.: 7,882 Status: Location: SAN ANTONIO, TX. USA Drives: 85 starion, OWN 2 87'S & 2 88'S	have the timming chekd, backfiring is usually caused by timming/ignition not being right. like crossed plug wires. dst. not in correct alighnment. could be a clogged cat.

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