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Jeep Wrangler YJ
YJ General Discussion
1991 2.5 with partial spark problem
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<blockquote data-quote="deadpool1" data-source="post: 439660" data-attributes="member: 21229"><p>1991, YJ, 2.5L it is. it is MPI EFI injected burns gasoline, It is NOT TBI nor carb it is MPI x4.</p><p>The TB has only IAC and TPS, and TV plate, simple as can ever be this.</p><p></p><p>VIN 8th code P is that; day1 new car engine, </p><p>so what transmission is this,. OK M/T i see the TOB there throw out bearing </p><p>the A/T box flex plate loves to get wrecked, at A/T install and now CKP is dead or partally dead.,,the ckp is 2 hole types has no hand calibrated gap setting</p><p></p><p>the distrib is failing 30 year old spark wire sets are totally useless now, resistor wire carbon or silly silicone core are JUNK now.</p><p>do the 60k tune up?</p><p>just put in new spark kit. cap/rotor,wires hv and plugs, gaped top hood sticker, or 0.032"</p><p>cap off see pickup coil is it damaged ? on dizzy (or under cap full of CRUDE sure it is)</p><p>the right side of engine block has the stamped (hand) code for year, IIRC last digit is it.</p><p>once spark works it starts on instant start spray </p><p>an next is fuel filter, and clean injectors.</p></blockquote><p></p>
[QUOTE="deadpool1, post: 439660, member: 21229"] 1991, YJ, 2.5L it is. it is MPI EFI injected burns gasoline, It is NOT TBI nor carb it is MPI x4. The TB has only IAC and TPS, and TV plate, simple as can ever be this. VIN 8th code P is that; day1 new car engine, so what transmission is this,. OK M/T i see the TOB there throw out bearing the A/T box flex plate loves to get wrecked, at A/T install and now CKP is dead or partally dead.,,the ckp is 2 hole types has no hand calibrated gap setting the distrib is failing 30 year old spark wire sets are totally useless now, resistor wire carbon or silly silicone core are JUNK now. do the 60k tune up? just put in new spark kit. cap/rotor,wires hv and plugs, gaped top hood sticker, or 0.032" cap off see pickup coil is it damaged ? on dizzy (or under cap full of CRUDE sure it is) the right side of engine block has the stamped (hand) code for year, IIRC last digit is it. once spark works it starts on instant start spray an next is fuel filter, and clean injectors. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
1991 2.5 with partial spark problem
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